{"title":"Dev Boards \u0026 Wireless","description":"\u003ch2\u003eDev Boards \u0026amp; Wireless — Build Smarter, Prototype Faster\u003c\/h2\u003e\n\n\u003cp\u003eWelcome to our \u003cstrong\u003eDev Boards \u0026amp; Wireless\u003c\/strong\u003e collection — your one-stop destination for microcontroller development boards, wireless communication modules, antenna baluns, RFID tools, and more. Whether you're a seasoned embedded engineer or a passionate hobbyist diving into your first IoT project, we carry the essential electronics components to bring your ideas to life. From WiFi-enabled ESP8266 boards to SDR antenna baluns and Bluetooth amplifier boards, every product in this collection is selected to deliver reliable performance for prototyping, making, and production.\u003c\/p\u003e\n\n\u003ch3\u003eFeatured Products\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/wemos-d1-mini-esp8266-nodemcu-lua-wifi-development-board-10pcs\"\u003e10pcs WeMos D1 Mini ESP8266 NodeMcu WiFi Development Board\u003c\/a\u003e — A compact, WiFi-ready dev board perfect for IoT and home automation projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/125khz-rfid-duplicator-reader-writer-t5577-em4305-tm-chip\"\u003e125kHz RFID Duplicator Reader Writer – T5577 EM4305 TM Chip\u003c\/a\u003e — Read, write, and clone 125kHz RFID cards with ease for access control and security experiments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/1-9-hf-antenna-balun-160m-6m-long-wire-rtl-sdr-esd-protection\"\u003e1:9 HF Antenna Balun 160M–6M RTL-SDR Long Wire \u0026amp; ESD Protection\u003c\/a\u003e — Maximize your software-defined radio reception across a wide frequency range with built-in ESD protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/30wx2-bluetooth-5-stereo-power-amplifier-board-12v-24v\"\u003e30W×2 Bluetooth 5.0 Stereo Amplifier Board | 12V–24V Wide Voltage\u003c\/a\u003e — Add high-fidelity wireless audio to any DIY speaker or audio project with this powerful BT 5.0 amp board.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/1x4-keypad-keyboard-module-diy-kit-arduino-mcu\"\u003e1x4 Keypad Module DIY Kit for Arduino MCU Projects\u003c\/a\u003e — A simple, plug-and-play input module ideal for menus, access panels, and Arduino-based user interfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Shop Our Dev Boards \u0026amp; Wireless Collection?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Selection:\u003c\/strong\u003e From ESP8266 WiFi boards and 2.4GHz wireless modules to HF antenna baluns and RFID duplicators, we cover all your wireless and prototyping needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaker-Friendly:\u003c\/strong\u003e Products are compatible with popular platforms like Arduino, NodeMCU, RTL-SDR, and more — no advanced expertise required to get started.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValue Packs:\u003c\/strong\u003e Many items are available in multi-packs (10pcs, etc.), saving you money on bulk orders for labs, classrooms, or production runs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality Components:\u003c\/strong\u003e We source from trusted manufacturers to ensure consistent, reliable performance in every board, module, and chip.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: Are the WeMos D1 Mini ESP8266 dev boards compatible with Arduino IDE?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The \u003ca href=\"\/products\/wemos-d1-mini-esp8266-nodemcu-lua-wifi-development-board-10pcs\"\u003eWeMos D1 Mini ESP8266 NodeMcu WiFi Development Board\u003c\/a\u003e is fully compatible with the Arduino IDE. Simply install the ESP8266 board package via the Arduino Boards Manager, and you can start programming with familiar Arduino syntax right away. It also supports Lua scripting via NodeMCU firmware.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What frequencies does the 1:9 HF Antenna Balun support for RTL-SDR use?\u003c\/h4\u003e\n\u003cp\u003eA: The \u003ca href=\"\/products\/1-9-hf-antenna-balun-rtl-sdr-160m-6m-sma-female-connector\"\u003e1:9 HF Antenna Balun RTL-SDR 160M–6M SMA Female Connector\u003c\/a\u003e covers a wide range from 160 meters all the way down to 6 meters, making it ideal for shortwave listening, amateur radio, and RTL-SDR software-defined radio experimentation across HF bands.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can the 125kHz RFID Duplicator read and write to multiple card types?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The \u003ca href=\"\/products\/125khz-rfid-duplicator-reader-writer-t5577-em4305-tm-chip\"\u003e125kHz RFID Duplicator Reader Writer\u003c\/a\u003e supports T5577, EM4305, and TM chip formats, giving you broad compatibility with common 125kHz proximity cards and fobs used in access control systems.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What power supply does the 30W×2 Bluetooth 5.0 Amplifier Board require?\u003c\/h4\u003e\n\u003cp\u003eA: The \u003ca href=\"\/products\/30wx2-bluetooth-5-stereo-power-amplifier-board-12v-24v\"\u003e30W×2 Bluetooth 5.0 Stereo Amplifier Board\u003c\/a\u003e operates on a wide voltage range of 12V to 24V DC, making it versatile for both bench-top use and integration into custom enclosures or vehicle audio systems.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Are the WeMos D1 Mini ESP8266 dev boards compatible with Arduino IDE?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The WeMos D1 Mini ESP8266 NodeMcu WiFi Development Board is fully compatible with the Arduino IDE. Simply install the ESP8266 board package via the Arduino Boards Manager, and you can start programming with familiar Arduino syntax right away. It also supports Lua scripting via NodeMCU firmware.\"}}, {\"@type\": \"Question\", \"name\": \"What frequencies does the 1:9 HF Antenna Balun support for RTL-SDR use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 1:9 HF Antenna Balun RTL-SDR 160M–6M SMA Female Connector covers a wide range from 160 meters all the way down to 6 meters, making it ideal for shortwave listening, amateur radio, and RTL-SDR software-defined radio experimentation across HF bands.\"}}, {\"@type\": \"Question\", \"name\": \"Can the 125kHz RFID Duplicator read and write to multiple card types?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. The 125kHz RFID Duplicator Reader Writer supports T5577, EM4305, and TM chip formats, giving you broad compatibility with common 125kHz proximity cards and fobs used in access control systems.\"}}, {\"@type\": \"Question\", \"name\": \"What power supply does the 30W×2 Bluetooth 5.0 Amplifier Board require?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 30W×2 Bluetooth 5.0 Stereo Amplifier Board operates on a wide voltage range of 12V to 24V DC, making it versatile for both bench-top use and integration into custom enclosures or vehicle audio systems.\"}}]}\u003c\/script\u003e","products":[{"product_id":"433mhz-rf-wireless-receiver-transmitter-module-pair-ask-ook-dc5v","title":"433MHz RF Wireless Receiver \u0026 Transmitter Module Pair ASK\/OOK","description":"\n\u003ch2\u003e433MHz RF Wireless Receiver \u0026amp; Transmitter Module Pair — ASK\/OOK, DC 5V\u003c\/h2\u003e\n\u003cp\u003eUpgrade your electronics projects with this \u003cstrong\u003e433MHz RF Wireless Receiver and Transmitter Module pair\u003c\/strong\u003e. Featuring super-regeneration technology and operating on the widely used 433MHz frequency band, this duo delivers reliable short-range wireless communication for hobbyists, makers, and engineers alike. Each purchase includes \u003cstrong\u003e2 pieces (1 transmitter + 1 receiver)\u003c\/strong\u003e, ready to drop into your next DIY circuit or automation project.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 433MHz — one of the most popular ISM band frequencies for short-range wireless applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModulation:\u003c\/strong\u003e ASK (Amplitude Shift Keying) \/ OOK (On-Off Keying) for simple, low-power data transmission\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e DC 5V — compatible with Arduino, Raspberry Pi, and most microcontroller development boards\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuper Regeneration Receiver:\u003c\/strong\u003e High sensitivity design for improved signal reception in typical indoor environments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact PCB Form Factor:\u003c\/strong\u003e Small board size makes integration into enclosures and breadboards straightforward\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePair Included:\u003c\/strong\u003e 1 x Receiver Module + 1 x Transmitter Module (2 pcs total)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand new\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Use Cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eHome automation and smart switch projects\u003c\/li\u003e\n  \u003cli\u003eRemote control systems (garage doors, lighting, fans)\u003c\/li\u003e\n  \u003cli\u003eWireless sensor networks and IoT prototyping\u003c\/li\u003e\n  \u003cli\u003eArduino \/ microcontroller communication experiments\u003c\/li\u003e\n  \u003cli\u003eRobotics and RC electronics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e433MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModulation Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eASK \/ OOK\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC 5V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReceiver Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSuper Regeneration\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 pcs (1 pair)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 433MHz RF Receiver Module Board\u003c\/li\u003e\n  \u003cli\u003e1 × 433MHz RF Transmitter Module Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this 433MHz RF module pair compatible with Arduino and Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The 433MHz RF wireless receiver and transmitter modules operate at DC 5V, making them directly compatible with Arduino boards and Raspberry Pi projects (with appropriate level shifting for 3.3V GPIO). They work seamlessly with popular libraries like RCSwitch and RadioHead for quick integration.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between ASK and OOK modulation on these RF modules?\u003c\/h4\u003e\n\u003cp\u003eA: ASK (Amplitude Shift Keying) is a general modulation scheme where data is encoded by varying the amplitude of the carrier signal. OOK (On-Off Keying) is a specific subset of ASK where the carrier is simply switched on and off to represent binary data. Most 433MHz super-regeneration modules like this one use OOK as the default method — simple, efficient, and widely supported by microcontroller libraries.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the typical transmission range of this 433MHz RF module pair?\u003c\/h4\u003e\n\u003cp\u003eA: In open air, this 433MHz RF transmitter and receiver module pair can typically achieve ranges of 20–200 metres depending on the antenna used, supply voltage, and surrounding environment. Adding a simple wire antenna (approximately 17cm for 433MHz) to the ANT pin on both modules significantly improves range and signal reliability.\u003c\/p\u003e\n\u003ch4\u003eQ: Do I need any additional components to start using these RF modules?\u003c\/h4\u003e\n\u003cp\u003eA: The modules are self-contained and require only a DC 5V power supply and a microcontroller to begin transmitting and receiving data. For best performance, attach a short wire antenna (~17cm) to each module's antenna pad. No external RF components or filters are required for basic ASK\/OOK wireless communication.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this 433MHz RF module pair compatible with Arduino and Raspberry Pi?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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Most 433MHz super-regeneration modules like this one use OOK as the default method — simple, efficient, and widely supported by microcontroller libraries.\"}}, {\"@type\": \"Question\", \"name\": \"What is the typical transmission range of this 433MHz RF module pair?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"In open air, this 433MHz RF transmitter and receiver module pair can typically achieve ranges of 20–200 metres depending on the antenna used, supply voltage, and surrounding environment. Adding a simple wire antenna (approximately 17cm for 433MHz) to the ANT pin on both modules significantly improves range and signal reliability.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need any additional components to start using these RF modules?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The modules are self-contained and require only a DC 5V power supply and a microcontroller to begin transmitting and receiving data. For best performance, attach a short wire antenna (~17cm) to each module's antenna pad. No external RF components or filters are required for basic ASK\/OOK wireless communication.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"433MHz RF Wireless Receiver \u0026 Transmitter Module Pair ASK\/OOK\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/433mhz-rf-wireless-receiver-transmitter-module-pair-ask-ook-dc5v\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"Default Title","offer_id":50287235301603,"sku":"\u003cnone\u003e","price":18.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/Sd0a5d95fe60d44c38d38101c6c431523r.webp?v=1790295043"},{"product_id":"raspberry-pi-26-pin-gpio-v3-adapter-board-expansion-module","title":"Raspberry Pi 26-Pin GPIO V3.0 Adapter Expansion Board Module","description":"\n\u003ch2\u003eRaspberry Pi 26-Pin GPIO V3.0 Adapter Board Expansion Module\u003c\/h2\u003e\n\u003cp\u003eUnlock the full potential of your Raspberry Pi projects with this compact and versatile \u003cstrong\u003e26-Pin GPIO V3.0 Adapter Board Expansion Module\u003c\/strong\u003e. Designed for makers, hobbyists, students, and engineers, this expansion board makes it easy to access, prototype, and experiment with your Raspberry Pi's GPIO (General Purpose Input\/Output) pins — no soldering headaches, no tangled jumper wires.\u003c\/p\u003e\n\n\u003ch3\u003eWhy You'll Love This Expansion Board\u003c\/h3\u003e\n\u003cp\u003eWhether you're building a home automation system, learning embedded programming, or prototyping a robotics project, this GPIO adapter board gives you clean, organized access to all 26 pins of your Raspberry Pi. The DIP package format makes it breadboard-friendly and ideal for experimental modules and rapid prototyping setups.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e26-Pin GPIO Expansion:\u003c\/strong\u003e Provides full access to all 26 GPIO pins for seamless interfacing with sensors, LEDs, motors, displays, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eV3.0 Design:\u003c\/strong\u003e Updated layout for improved usability and compatibility with popular Raspberry Pi models.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIP Package Format:\u003c\/strong\u003e Breadboard-compatible design makes it perfect for quick prototyping and experimental circuit builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClean Pin Breakout:\u003c\/strong\u003e Clearly organized pin layout reduces wiring errors and speeds up your development workflow.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e Minimal footprint keeps your workspace tidy and your builds portable.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNew Condition:\u003c\/strong\u003e Ships brand new, ready to use right out of the package.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Safe for everyday use in educational and home lab environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eGPIO pin breakout and prototyping on Raspberry Pi boards\u003c\/li\u003e\n  \u003cli\u003eDIY electronics projects and experimental module setups\u003c\/li\u003e\n  \u003cli\u003eSTEM education and maker communities\u003c\/li\u003e\n  \u003cli\u003eSensor integration, LED control, and motor driver experiments\u003c\/li\u003e\n  \u003cli\u003eHome automation and IoT development\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e26 Pin Type GPIO V3.0\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin Count\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e26 Pins\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIP (Breadboard Compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eExperimental Modules \/ GPIO Expansion\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which Raspberry Pi models is this 26-Pin GPIO adapter board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This 26-Pin GPIO V3.0 Expansion Module is designed for Raspberry Pi models that feature a 26-pin GPIO header, including the original Raspberry Pi Model A, Model B, and Model B+. Always verify your board's GPIO pin count before purchasing to ensure compatibility.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this GPIO expansion board breadboard-compatible?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The board uses a DIP (Dual In-line Package) format, making it fully compatible with standard breadboards. This allows you to quickly plug it in and start connecting components like sensors, LEDs, and switches without any soldering required.\u003c\/p\u003e\n\u003ch4\u003eQ: What kinds of projects can I build with this GPIO adapter board?\u003c\/h4\u003e\n\u003cp\u003eA: The possibilities are wide open! Popular uses include home automation systems, robotics, LED lighting control, temperature and humidity sensor interfacing, motor control experiments, and IoT (Internet of Things) prototypes — all great for beginners and experienced makers alike.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which Raspberry Pi models is this 26-Pin GPIO adapter board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This 26-Pin GPIO V3.0 Expansion Module is designed for Raspberry Pi models that feature a 26-pin GPIO header, including the original Raspberry Pi Model A, Model B, and Model B+. Always verify your board's GPIO pin count before purchasing to ensure compatibility.\"}}, {\"@type\": \"Question\", \"name\": \"Is this GPIO expansion board breadboard-compatible?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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Whether you're building wearables, smart IoT devices, or embedded machine-learning projects, this compact development board delivers big performance in an incredibly small footprint.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePowerful ESP32-S3 Processor:\u003c\/strong\u003e Dual-core Xtensa 32-bit processor running up to 240 MHz — fully compatible with Arduino IDE and MicroPython for flexible development.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Wireless Connectivity:\u003c\/strong\u003e Onboard 2.4 GHz Wi-Fi and Bluetooth® 5.0 BLE Mesh support multiple wireless applications; attach a U.FL antenna for 100 m+ range.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDetachable OV2640 Camera Sensor:\u003c\/strong\u003e Captures up to 1600 × 1200 resolution. The connector is also compatible with the OV5640 camera sensor for up to 2592 × 1944 resolution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in Digital Microphone:\u003c\/strong\u003e Enables voice sensing and audio recognition applications right out of the box.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenerous Memory:\u003c\/strong\u003e 8 MB PSRAM + 8 MB FLASH onboard, plus an SD card slot supporting up to 32 GB FAT memory for expanded storage.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLithium Battery Management:\u003c\/strong\u003e Integrated battery charge management makes it ready for portable, battery-powered projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Compact Form Factor:\u003c\/strong\u003e Classic XIAO design at just 21 × 17.5 mm — ideal for space-constrained wearable and embedded projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner-Friendly Ecosystem:\u003c\/strong\u003e Compatible with the Seeed Studio Grove Starter Kit and free online courses to get you from zero to working prototype quickly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eSpecification\u003c\/th\u003e\n    \u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eDetail\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSoC \/ Processor\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eESP32-S3R8 — Dual-core Xtensa LX7, up to 240 MHz\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eWireless\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e2.4 GHz Wi-Fi + Bluetooth® 5.0 BLE Mesh\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCamera\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eOV2640 (1600×1200); OV5640 compatible (2592×1944)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMicrophone\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eIntegrated digital microphone\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003ePSRAM \/ Flash\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e8 MB PSRAM \/ 8 MB Flash\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eExternal Storage\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSD card slot (up to 32 GB FAT)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eProgramming Support\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eArduino IDE, MicroPython\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDimensions\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e21 × 17.5 mm\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCountry of Origin\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMade in Mainland China\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThe XIAO ESP32S3 Sense is perfect for \u003cstrong\u003ehobbyists, makers, students, and professional engineers\u003c\/strong\u003e who need a tiny, capable board for:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIoT sensor nodes and smart home automation\u003c\/li\u003e\n  \u003cli\u003eWearable electronics and compact embedded systems\u003c\/li\u003e\n  \u003cli\u003eEdge AI and embedded machine learning (TinyML)\u003c\/li\u003e\n  \u003cli\u003eImage capture, video streaming, and computer vision prototypes\u003c\/li\u003e\n  \u003cli\u003eVoice-activated and audio recognition applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is the XIAO ESP32S3 Sense compatible with the Arduino IDE?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The Seeed Studio XIAO ESP32S3 Sense fully supports the Arduino IDE as well as MicroPython, making it accessible to beginners and experienced developers alike. Simply add the ESP32 board package to your Arduino IDE to get started with the XIAO ESP32S3 Sense development board.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use a different camera sensor with this development board?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. While the board ships with the OV2640 camera sensor (1600×1200 resolution), the camera connector is also compatible with the OV5640 sensor, which supports up to 2592×1944 resolution — giving you flexibility to upgrade your imaging capability for more demanding projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How much memory does the XIAO ESP32S3 Sense have, and can I expand it?\u003c\/h4\u003e\n\u003cp\u003eA: The board comes equipped with 8 MB PSRAM and 8 MB FLASH built in. You can further expand storage using the onboard SD card slot, which supports FAT-formatted cards up to 32 GB — ideal for data logging, image storage, and larger embedded ML model files.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the wireless range of the XIAO ESP32S3 Sense?\u003c\/h4\u003e\n\u003cp\u003eA: With the onboard antenna, you get standard short-range 2.4 GHz Wi-Fi and Bluetooth® 5.0 BLE Mesh connectivity. When paired with an optional external U.FL antenna, the board can support communication ranges of 100 meters or more, suitable for extended-range IoT deployments.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. 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Whether you're building remote control systems, IoT devices, robotics, or custom wireless communication setups, this compact module delivers stable, fast, and interference-resistant 2.4G connectivity.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.4GHz Frequency Band\u003c\/strong\u003e — Operates on the globally recognized 2.4GHz ISM band for broad compatibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhanced Power Output\u003c\/strong\u003e — Improved power amplification for extended transmission range compared to standard modules\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransceiver Functionality\u003c\/strong\u003e — Acts as both a transmitter and receiver, enabling two-way data communication\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight Design\u003c\/strong\u003e — Easy to integrate into a wide variety of electronics projects and enclosures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable Data Transmission\u003c\/strong\u003e — Reliable, low-latency communication suitable for real-time control and data logging\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Compatibility\u003c\/strong\u003e — Works seamlessly with popular microcontrollers including Arduino, STM32, Raspberry Pi, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNew Condition\u003c\/strong\u003e — Brand new module, ready for immediate deployment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity\u003c\/strong\u003e: 1 module per order\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency:\u003c\/strong\u003e 2.4GHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Transmitter \u0026amp; Receiver (Transceiver)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhancement:\u003c\/strong\u003e Improved power output for extended range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDIY electronics and maker projects\u003c\/li\u003e\n  \u003cli\u003eRemote control systems (drones, RC cars, robotics)\u003c\/li\u003e\n  \u003cli\u003eInternet of Things (IoT) sensor networks\u003c\/li\u003e\n  \u003cli\u003eWireless data logging and monitoring systems\u003c\/li\u003e\n  \u003cli\u003eHome automation and smart device prototyping\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What frequency does this 2.4G wireless transceiver module operate on?\u003c\/h4\u003e\n\u003cp\u003eA: This module operates on the 2.4GHz ISM (Industrial, Scientific, and Medical) frequency band, which is widely supported worldwide and compatible with a broad range of electronic devices and microcontrollers.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this module compatible with Arduino and Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the 2.4G wireless transmitter and receiver module is designed for broad microcontroller compatibility, including popular platforms such as Arduino, STM32, and Raspberry Pi, making it ideal for a wide variety of DIY and professional electronics projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the advantage of the improved power enhancement on this module?\u003c\/h4\u003e\n\u003cp\u003eA: The enhanced power output on this module provides a longer effective transmission range and more robust signal stability compared to standard 2.4G modules, making it especially useful in environments with obstacles or other wireless interference.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many modules are included per order?\u003c\/h4\u003e\n\u003cp\u003eA: Each order includes 1 wireless transceiver module.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. 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This compact, versatile board integrates both Bluetooth stereo audio \u003cem\u003etransmission\u003c\/em\u003e and \u003cem\u003ereception\u003c\/em\u003e in a single module, making it ideal for DIY electronics builds, audio equipment modifications, wireless speaker setups, and custom earphone projects.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth 5.3 GFSK Protocol\u003c\/strong\u003e — latest-generation wireless connectivity for stable, low-latency stereo audio streaming\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Mode via Solder Jumper\u003c\/strong\u003e — easily configure the board as a Bluetooth audio \u003cem\u003etransmitter\u003c\/em\u003e or \u003cem\u003ereceiver\u003c\/em\u003e by setting a short-circuit solder joint\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuto-Reconnect\u003c\/strong\u003e — automatically reconnects to the last paired Bluetooth device on power-up, no manual re-pairing needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSerial AT Commands\u003c\/strong\u003e — configure device names, search for devices, manage connections\/disconnections, and more via UART serial interface\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndicator LED + Connection Status Output\u003c\/strong\u003e — real-time status feedback via onboard LED and logic-level connection pin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal 2.4 GHz Antenna Support\u003c\/strong\u003e — onboard IPX\/U.FL connector for attaching an external 2.4G antenna (antenna sold separately), ideal for metal-enclosed applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStereo 2-Channel Audio\u003c\/strong\u003e — full 20 Hz–20 kHz frequency response with 95 dB SNR and \u0026lt;−70 dB total harmonic distortion\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor\u003c\/strong\u003e — only 23.5 × 15.5 mm, perfect for space-constrained enclosures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTransmission Mode:\u003c\/strong\u003e Wirelessly streams stereo audio from a wired audio source to compatible Bluetooth audio receiver modules, Bluetooth headphones, or Bluetooth speakers — up to 20 metres range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReception Mode:\u003c\/strong\u003e Acts as a Bluetooth audio sink; connect it to a smartphone, tablet, or other Bluetooth source to play music wirelessly through a wired speaker or amplifier.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBest Practice:\u003c\/strong\u003e For guaranteed compatibility, we recommend using two KCX_BT_EMITTER modules together — one set as transmitter, the other as receiver. While the module can connect to many third-party Bluetooth devices, full compatibility with all third-party headphones, speakers, or car audio systems cannot be guaranteed.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKCX_BT_EMITTER\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBluetooth Version\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.3 GFSK\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.5 V – 5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRF Output Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+5 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRF Frequency Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2402 – 2480 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 20 metres (open air)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 (Stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Frequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 Hz – 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio Dynamic Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAudio SNR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e95 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Harmonic Distortion\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e−70 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput\/Output Signal Amplitude\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤ 2 Vpp\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission Delay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e250 – 300 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e23.5 × 15.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage \/ Chip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTQFP\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × KCX_BT_EMITTER Bluetooth 5.3 Audio Transceiver Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: External 2.4G antenna and IPX RF cable are NOT included and must be sourced separately if required.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility Notice\u003c\/h3\u003e\n\u003cp\u003eThis module is fully tested and optimised for use with matching KCX_BT_EMITTER receiver modules. Connectivity with third-party Bluetooth speakers, headphones, or car audio devices may vary due to differences in chip firmware across manufacturers. Devices that require password\/PIN pairing are not supported. We strongly recommend purchasing two units for a guaranteed point-to-point wireless audio link.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Can the KCX_BT_EMITTER Bluetooth 5.3 module work as both a transmitter and receiver?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The KCX_BT_EMITTER board can be configured as either a Bluetooth audio transmitter or a Bluetooth audio receiver by setting the appropriate short-circuit solder joint on the PCB. You only need to choose one mode per board — it cannot operate in both modes simultaneously.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the wireless range of this Bluetooth 5.3 audio module?\u003c\/h4\u003e\n\u003cp\u003eA: The module supports a transmission range of up to 20 metres in open-air conditions. Range may be reduced by walls, metal enclosures, or other RF interference. For metal-shell installations, connecting an external 2.4G antenna via the onboard IPX\/U.FL connector will help maintain range and signal quality.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this module support AT commands for custom configuration?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The KCX_BT_EMITTER supports serial UART AT commands, allowing you to customise the Bluetooth device name, initiate or terminate connections, scan for nearby devices, and more — making it ideal for integration into custom electronics and DIY audio projects.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this Bluetooth audio board compatible with all Bluetooth headphones and speakers?\u003c\/h4\u003e\n\u003cp\u003eA: Compatibility with third-party Bluetooth receiving devices (headphones, speakers, car audio units) cannot be fully guaranteed due to firmware differences across manufacturers. For the most reliable wireless audio link, we recommend pairing two KCX_BT_EMITTER modules — one as transmitter and one as receiver. Devices requiring PIN\/password pairing are not supported.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Can the KCX_BT_EMITTER Bluetooth 5.3 module work as both a transmitter and receiver?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The KCX_BT_EMITTER board can be configured as either a Bluetooth audio transmitter or a Bluetooth audio receiver by setting the appropriate short-circuit solder joint on the PCB. You only need to choose one mode per board — it cannot operate in both modes simultaneously.\"}}, {\"@type\": \"Question\", \"name\": \"What is the wireless range of this Bluetooth 5.3 audio module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module supports a transmission range of up to 20 metres in open-air conditions. Range may be reduced by walls, metal enclosures, or other RF interference. For metal-shell installations, connecting an external 2.4G antenna via the onboard IPX\/U.FL connector will help maintain range and signal quality.\"}}, {\"@type\": \"Question\", \"name\": \"Does this module support AT commands for custom configuration?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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Devices requiring PIN\/password pairing are not supported.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Bluetooth 5.3 Audio Transceiver Module – GFSK Stereo Wireless Board\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/bluetooth-5-3-audio-transceiver-module-gfsk-stereo-kcx-bt-emitter\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"Bluetooth 5.3","offer_id":50287237923043,"sku":"14:173#Bluetooth 5.3","price":22.05,"currency_code":"USD","in_stock":true},{"title":"antenna","offer_id":50287237955811,"sku":"14:1202#antenna","price":9.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/S5bcff1884f154374be2a86cbe8ef96ef4.webp?v=1790295055"},{"product_id":"ch340g-usb-to-ttl-serial-converter-module-stc-microcontroller","title":"CH340G USB to TTL Serial Module – STC MCU Programmer Board","description":"\n\u003ch2\u003eCH340G USB to TTL Serial Converter Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eCH340G USB to TTL Serial Converter Module\u003c\/strong\u003e is a compact, reliable adapter board designed for developers, hobbyists, and engineers who need a stable USB-to-serial interface for microcontroller programming and debugging. Built around the \u003cstrong\u003eCH340E\/CH340G chip\u003c\/strong\u003e, this module offers a rock-solid alternative to PL2303-based adapters, delivering consistent driver support across Windows, macOS, and Linux.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCH340G\/CH340E Chip:\u003c\/strong\u003e Industry-trusted USB-to-serial IC with broad OS driver compatibility and stable communication.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB to TTL Conversion:\u003c\/strong\u003e Converts standard USB signals to 3.3V\/5V TTL UART serial signals, ideal for STC microcontrollers, Arduino boards, and other MCU platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMD Package Design:\u003c\/strong\u003e Surface-mount construction keeps the board compact and lightweight — perfect for tight workspaces and portable setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePL2303 Alternative:\u003c\/strong\u003e Drop-in functional replacement for PL2303 USB-to-serial adapters, with improved driver reliability on modern operating systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFirmware Download Support:\u003c\/strong\u003e Supports direct firmware flashing and serial debugging for STC microcontroller boards and similar MCUs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Convenience:\u003c\/strong\u003e Simple USB connection with no external power supply required — powered directly from the USB port.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Indicators:\u003c\/strong\u003e On-board TX\/RX LEDs for real-time visual confirmation of data transmission activity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBreadboard \u0026amp; Project Compatible:\u003c\/strong\u003e Standard pin header spacing makes it easy to integrate into breadboards and development setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip:\u003c\/strong\u003e CH340E \/ CH340G\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e USB to TTL (UART)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e SMD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × CH340G USB to TTL Serial Converter Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis module is ideal for embedded systems developers, electronics students, Arduino enthusiasts, and anyone working with STC microcontrollers or other UART-based devices. Whether you're uploading firmware, monitoring serial output, or debugging a microcontroller project, the CH340G module delivers the dependable performance you need.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the CH340G USB to TTL module used for?\u003c\/h4\u003e\n\u003cp\u003eA: The CH340G USB to TTL serial converter module is primarily used for programming and debugging microcontrollers (such as STC MCUs and Arduino boards) via a computer's USB port. It converts USB signals to TTL-level UART serial signals so your PC can communicate directly with microcontroller hardware.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the CH340G a reliable replacement for PL2303 adapters?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The CH340G chip is widely regarded as a more reliable alternative to PL2303-based adapters, especially on modern versions of Windows, macOS, and Linux. Drivers are readily available and consistently supported, reducing compatibility issues common with older PL2303 devices.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What operating systems are supported?\u003c\/h4\u003e\n\u003cp\u003eA: The CH340G module supports Windows (XP through Windows 11), macOS, and Linux. Drivers can be downloaded from the chip manufacturer's website. On many Linux distributions, the driver is included in the kernel by default.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What voltage levels does this module support?\u003c\/h4\u003e\n\u003cp\u003eA: The CH340G module supports both 3.3V and 5V TTL logic levels, making it compatible with a wide range of microcontroller boards and development platforms.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. 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This acrylic enclosure is designed to fit both the Raspberry Pi Zero and the Raspberry Pi Zero W, providing a snug and precise fit for both board variants.\"}}, {\"@type\": \"Question\", \"name\": \"Does the case allow access to all ports and GPIO pins on the Raspberry Pi Zero?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. The case is precision-cut to leave all ports, the camera connector, and GPIO pins fully accessible, so you can use your Pi Zero without any limitations.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to do anything before assembling the case?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — please peel off the protective film on each acrylic panel before assembling the case. This reveals the clear, polished finish and ensures your enclosure looks its best.\"}}, {\"@type\": \"Question\", \"name\": \"Is the Raspberry Pi Zero board included with the case?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No, the Raspberry Pi Zero board is not included. The package contains only the acrylic enclosure case.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Raspberry Pi Zero Acrylic Case – Clear, Black \u0026 Blue\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/raspberry-pi-zero-acrylic-case-transparent-black-blue\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"transparent","offer_id":50287238840547,"sku":"14:29#transparent","price":21.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/S5df4625eb57e4e59846a8bbe7ee990c3n.webp?v=1790295058"},{"product_id":"esp32-development-board-nodemcu-wifi-bluetooth-dual-core-cp2102","title":"ESP32 Dev Board NodeMCU WiFi Bluetooth Dual Core CP2102","description":"\n\u003ch2\u003eESP32 Development Board – NodeMCU ESP-DEVKITV1 with CP2102, WiFi \u0026amp; Bluetooth, Dual Core Microcontroller\u003c\/h2\u003e\n\n\u003cp\u003eTake your electronics projects to the next level with the \u003cstrong\u003eESP32 Development Board (NodeMCU-ESP32 DEVKITV1)\u003c\/strong\u003e. Powered by the versatile ESP32 dual-core microcontroller, this compact board combines WiFi and Bluetooth connectivity in a single, easy-to-use package. Whether you're a hobbyist, student, or professional engineer, this board delivers reliable performance for IoT projects, prototyping, smart home automation, and more.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose This ESP32 Development Board?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Core Processing Power:\u003c\/strong\u003e The ESP32 chip features two powerful Xtensa cores for efficient multitasking and fast execution of complex programs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated WiFi + Bluetooth:\u003c\/strong\u003e Built-in 2.4GHz WiFi and Bluetooth (Classic \u0026amp; BLE) with onboard PCB antenna for seamless wireless connectivity — no external modules needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCP2102 USB-to-UART Bridge:\u003c\/strong\u003e Reliable and stable serial communication via the CP2102 chip for hassle-free programming and debugging over USB.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e0.96-Inch OLED Display:\u003c\/strong\u003e Onboard OLED screen for real-time data visualization, status monitoring, and debugging feedback right on the board.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth Audio Support:\u003c\/strong\u003e Compatible with CVSD and SBC audio codecs for Bluetooth audio applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Breadboard-Friendly:\u003c\/strong\u003e Small form factor with standard 2.54mm pin headers makes it easy to integrate into any project or breadboard setup.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Compatible with the Arduino IDE, MicroPython, ESP-IDF, and other popular development environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip:\u003c\/strong\u003e ESP32 Dual-Core Microcontroller\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e DC 5V (via USB)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWireless:\u003c\/strong\u003e 2.4GHz WiFi + Bluetooth (Classic \u0026amp; BLE)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBluetooth Audio:\u003c\/strong\u003e CVSD and SBC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAntenna:\u003c\/strong\u003e Onboard PCB antenna\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 0.96-inch OLED screen\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB-to-UART:\u003c\/strong\u003e CP2102\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× ESP32 Development Board (NodeMCU-ESP32 DEVKITV1 CP2102)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIoT (Internet of Things) development\u003c\/li\u003e\n  \u003cli\u003eSmart home automation projects\u003c\/li\u003e\n  \u003cli\u003eWireless sensor networks\u003c\/li\u003e\n  \u003cli\u003eRobotics and embedded systems\u003c\/li\u003e\n  \u003cli\u003eBluetooth audio and data streaming projects\u003c\/li\u003e\n  \u003cli\u003eRapid prototyping and STEM education\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is the ESP32 Development Board compatible with the Arduino IDE?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! 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It allows you to upload code, monitor serial output, and debug your programs through a standard USB connection.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What power supply does this ESP32 board require?\u003c\/h4\u003e\n\u003cp\u003eA: The board is powered via DC 5V, which can be supplied through a standard Micro-USB cable connected to your computer or a USB power adapter — no additional power supply is needed for most projects.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the ESP32 Development Board compatible with the Arduino IDE?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The ESP32 DEVKITV1 board is fully compatible with the Arduino IDE. You simply need to add the ESP32 board package via the Arduino Boards Manager to start programming it just like any other Arduino-compatible board.\"}}, {\"@type\": \"Question\", \"name\": \"Does this ESP32 board support both Classic Bluetooth and Bluetooth Low Energy (BLE)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. 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It allows you to upload code, monitor serial output, and debug your programs through a standard USB connection.\"}}, {\"@type\": \"Question\", \"name\": \"What power supply does this ESP32 board require?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The board is powered via DC 5V, which can be supplied through a standard Micro-USB cable connected to your computer or a USB power adapter — no additional power supply is needed for most projects.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"ESP32 Dev Board NodeMCU WiFi Bluetooth Dual Core CP2102\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/esp32-development-board-nodemcu-wifi-bluetooth-dual-core-cp2102\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"2pcs CP2102","offer_id":50287238938851,"sku":"14:350852#2pcs CP2102","price":73.78,"currency_code":"USD","in_stock":true},{"title":"CP2102","offer_id":50287238971619,"sku":"14:1202#CP2102","price":29.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/Se16d3c99336241c38966aaacdf2f2979Y.webp?v=1790295059"},{"product_id":"st-m27c512-12f1-27c512-dip-28-eprom-ic-chips-10-pack","title":"10pcs ST M27C512-12F1 27C512 DIP-28 EPROM IC Chips","description":"\n\u003ch2\u003eST M27C512-12F1 27C512 DIP-28 EPROM IC Chips — 10-Piece Pack\u003c\/h2\u003e\n\u003cp\u003eGet reliable, brand-new ST M27C512-12F1 EPROM integrated circuits in a convenient 10-piece lot. 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Each chip comes in the classic 28-pin dual inline package (DIP-28) for easy breadboard and PCB integration.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e ST M27C512-12F1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e DIP-28 (28-pin Dual Inline Package)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMemory Type:\u003c\/strong\u003e EPROM — 64K x 8-bit (512 Kbit)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccess Time:\u003c\/strong\u003e 120 ns (12F1 speed grade)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 10 chips per lot\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eCompatible with standard 27C512 \/ 27512 pinout\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUV-erasable\u003c\/strong\u003e for reprogramming flexibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide compatibility\u003c\/strong\u003e with EPROM programmers (e.g., TL866, MiniPro, and similar)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eEmbedded system firmware storage\u003c\/li\u003e\n  \u003cli\u003eLegacy arcade machine and hardware ROM replacement\u003c\/li\u003e\n  \u003cli\u003eMicrocontroller and microprocessor-based circuit design\u003c\/li\u003e\n  \u003cli\u003eElectronics prototyping and engineering education\u003c\/li\u003e\n  \u003cli\u003eIndustrial control systems and automation boards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM27C512-12F1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eST (STMicroelectronics)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIP-28\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMemory Organization\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e64K x 8-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAccess Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120 ns\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLot Quantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 pcs\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhy Choose This Lot?\u003c\/h3\u003e\n\u003cp\u003eSourcing EPROM chips individually can be costly and time-consuming. 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Please ensure your code and libraries account for this offset before purchasing.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip:\u003c\/strong\u003e ESP32-C3FN4 \/ ESP32-C3FH4 — RISC-V 32-bit single-core processor\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in Flash:\u003c\/strong\u003e 4MB onboard Flash memory\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e 0.42-inch OLED screen, 128×64 resolution (active area: 40×2 offset start at 13,14)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWireless Connectivity:\u003c\/strong\u003e WiFi (2.4GHz 802.11 b\/g\/n) + Bluetooth 5.0 (LE)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAntenna:\u003c\/strong\u003e Ceramic antenna for reliable wireless signal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Download:\u003c\/strong\u003e Supports direct USB flashing — no external programmer needed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForm Factor:\u003c\/strong\u003e Super Mini — ultra-compact design for tight spaces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomizable:\u003c\/strong\u003e Fully programmable via Arduino IDE, ESP-IDF, and MicroPython\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eParameter\u003c\/th\u003e\n    \u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eValue\u003c\/th\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMCU\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eESP32-C3FN4 \/ FH4\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eFlash Memory\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e4MB\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eDisplay\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e0.42\" OLED, 128×64 (start point: 13,14)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eWiFi\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e2.4GHz 802.11 b\/g\/n\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eBluetooth\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eBluetooth 5.0 LE\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eAntenna\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCeramic Antenna\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eProgramming\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eUSB (direct download)\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f9f9f9;\"\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eCountry of Origin\u003c\/td\u003e\n    \u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMade in China\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis board is perfect for \u003cstrong\u003emakers, hobbyists, engineers, and students\u003c\/strong\u003e who need a tiny but capable development board for IoT devices, smart sensors, BLE beacons, data loggers, wearable electronics, and any WiFi\/Bluetooth-enabled project where board size matters.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × ESP32-C3 Super Mini Development Board with 0.42\" OLED\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Can I replace my existing 0.42-inch OLED module with this ESP32-C3 OLED board directly?\u003c\/h4\u003e\n\u003cp\u003eA: No. This 0.42-inch OLED uses a 128×64 resolution with a display starting offset of (13, 14), which differs from most standard 0.42-inch OLED modules. You will need to adjust your display initialization code and library settings to account for this offset. It is not a plug-and-play replacement for other 0.42-inch OLED screens.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What programming environments are compatible with the ESP32-C3 Super Mini board?\u003c\/h4\u003e\n\u003cp\u003eA: The ESP32-C3 Super Mini development board is compatible with the \u003cstrong\u003eArduino IDE\u003c\/strong\u003e (with ESP32 board support package), \u003cstrong\u003eESP-IDF\u003c\/strong\u003e (Espressif's native framework), and \u003cstrong\u003eMicroPython\u003c\/strong\u003e. It supports USB direct download, so no external programmer or USB-to-UART adapter is required.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the ESP32-C3 board support both WiFi and Bluetooth simultaneously?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The ESP32-C3 chip supports dual-mode wireless operation with \u003cstrong\u003e2.4GHz WiFi (802.11 b\/g\/n)\u003c\/strong\u003e and \u003cstrong\u003eBluetooth 5.0 Low Energy (BLE)\u003c\/strong\u003e. The onboard ceramic antenna provides reliable wireless performance in both modes.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How much Flash memory does this development board have?\u003c\/h4\u003e\n\u003cp\u003eA: The ESP32-C3 Super Mini board comes with \u003cstrong\u003e4MB of built-in Flash memory\u003c\/strong\u003e, providing ample storage for your firmware, application data, and file system (e.g., LittleFS or SPIFFS).\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. 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Engineered specifically for the Raspberry Pi 5, this compact cooling solution features a precision drum fan with PWM (Pulse Width Modulation) speed regulation that automatically adjusts fan speed based on real-time board temperature — so it runs quietly during light tasks and ramps up only when needed.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePurpose-Built for Raspberry Pi 5:\u003c\/strong\u003e Designed to fit the Raspberry Pi 5 board perfectly, ensuring optimal thermal contact and efficient heat dissipation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAluminum Alloy Construction:\u003c\/strong\u003e High-grade aluminum alloy heat sink maximizes heat transfer away from the processor and key components, helping maintain consistent performance during demanding workloads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePWM Speed Regulation:\u003c\/strong\u003e The integrated drum fan uses PWM control to dynamically modulate fan speed according to the board's temperature — quiet at idle, powerful under load.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature-Controlled Operation:\u003c\/strong\u003e Automatic thermal management reduces unnecessary fan noise and extends fan lifespan by only running at higher speeds when truly needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Module Design:\u003c\/strong\u003e Slim and lightweight profile adds minimal bulk to your Pi setup, making it ideal for enclosed projects, media centers, home servers, and more.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Straightforward module-style mounting means no complex tools or modifications required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e Raspberry Pi 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFan Type:\u003c\/strong\u003e Drum Fan (Blower Style)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeed Control:\u003c\/strong\u003e PWM (Pulse Width Modulation)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal Regulation:\u003c\/strong\u003e Automatic Temperature-Based Control\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're a hobbyist, maker, or developer running intensive applications on your Raspberry Pi 5 — such as media streaming, machine learning, retro gaming, or network services — this heat sink and fan module is an essential upgrade to maintain thermal stability and protect your investment.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this Raspberry Pi 5 heat sink compatible with the Raspberry Pi 4 or other models?\u003c\/h4\u003e\n\u003cp\u003eA: This aluminum alloy heat sink with PWM fan is specifically designed and engineered for the Raspberry Pi 5. It may not fit or align correctly with other Raspberry Pi models such as the Pi 4 or Pi 3 due to differences in board layout and mounting hole positions.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How does the PWM fan speed regulation work on this Raspberry Pi 5 cooler?\u003c\/h4\u003e\n\u003cp\u003eA: The fan uses PWM (Pulse Width Modulation) technology to automatically adjust its rotational speed based on the real-time temperature of your Raspberry Pi 5. At lower temperatures the fan runs slowly and quietly; as the board temperature rises under heavier workloads, the fan speeds up to deliver more airflow and maintain stable operating temperatures.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this heat sink require any software configuration on the Raspberry Pi 5?\u003c\/h4\u003e\n\u003cp\u003eA: The temperature-controlled fan module is designed to work with the Raspberry Pi 5's built-in fan control interface. You may configure fan behavior (such as temperature thresholds) via the Raspberry Pi OS settings or config file, giving you flexibility to fine-tune cooling performance to your specific needs.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. 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Featuring a double-sided PCB design and 3.81mm screw terminals for every IO pin, this board makes prototyping clean, reliable, and fast — no messy jumper wires needed.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Designed to work seamlessly with Arduino UNO and Mega2560 boards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eScrew Terminal IO:\u003c\/strong\u003e 3.81mm pitch screw terminals provide firm, reliable, and easy wire connections to every IO port — no soldering experience required for connections.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDouble-Sided Prototype PCB:\u003c\/strong\u003e Both sides of the board support soldering components, giving you maximum layout flexibility for your circuit designs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMT Solder Points:\u003c\/strong\u003e IO solder pads on the back of the board make fly-wire connections simple and convenient.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBreadboard Compatible:\u003c\/strong\u003e Fits neatly in the middle of a standard mini breadboard for extended experimental setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStackable Design:\u003c\/strong\u003e Can be used as a prototype extension plate sandwiched between other shields.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Dimensions:\u003c\/strong\u003e 7.4 × 6.2 × 1.7 cm — compact enough to fit into most project enclosures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Red\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand New \u0026amp; High Quality:\u003c\/strong\u003e 100% new components, built to last through countless prototyping sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.4 × 6.2 × 1.7 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTerminal Pitch\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.81 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePCB Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDouble-sided prototype PCB\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Boards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eArduino UNO, Arduino Mega2560\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrand New\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Assembled Proto Screw Shield Expansion Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're a hobbyist, student, or engineer, this screw shield is the perfect companion for rapid prototyping, classroom experiments, and DIY electronics projects. 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Whether you're a hobbyist, maker, or embedded systems developer, this board accelerates your prototyping cycle.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Module Compatibility:\u003c\/strong\u003e Supports ESP-01, ESP-01S, ESP-12, ESP32, and ESP32-WROVER modules in a single convenient tool.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Firmware Flashing:\u003c\/strong\u003e Built-in USB interface enables straightforward firmware downloading and programming without additional wiring.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated Test Socket:\u003c\/strong\u003e Secure module seating ensures reliable electrical contact during programming and testing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Durable Design:\u003c\/strong\u003e Sturdy construction built to withstand repeated development cycles on the workbench.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Operation:\u003c\/strong\u003e Simply insert your ESP module, connect via USB, and begin flashing — no soldering required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIdeal for Prototyping:\u003c\/strong\u003e Perfect for rapid iteration and testing of IoT and Wi-Fi enabled projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Modules\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eESP-01\u003c\/li\u003e\n  \u003cli\u003eESP-01S\u003c\/li\u003e\n  \u003cli\u003eESP-12 \/ ESP-12E \/ ESP-12F\u003c\/li\u003e\n  \u003cli\u003eESP32\u003c\/li\u003e\n  \u003cli\u003eESP32-WROVER\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Concern Chemicals:\u003c\/strong\u003e None\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × ESP8266 \/ ESP32 Test Programmer Socket Downloader Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Which ESP modules are compatible with this programmer socket downloader?\u003c\/h4\u003e\n\u003cp\u003eA: This ESP8266 ESP32 programmer socket is compatible with ESP-01, ESP-01S, ESP-12 (including ESP-12E and ESP-12F), ESP32, and ESP32-WROVER modules. Its versatile socket design makes it a great single tool for developers working across multiple ESP module types.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need to solder anything to use this ESP8266 ESP32 downloader board?\u003c\/h4\u003e\n\u003cp\u003eA: No soldering is required. Simply insert your ESP module into the integrated test socket, connect the board to your computer via USB, and use your preferred firmware flashing tool (such as esptool.py or the Arduino IDE) to program your module.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this programmer socket suitable for beginners working on IoT or Wi-Fi projects?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The plug-and-play design of this ESP32 \/ ESP8266 development board programmer makes it an excellent choice for beginners and experienced developers alike. It simplifies the firmware programming process and is a reliable tool for any ESP-based IoT or Wi-Fi project.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which ESP modules are compatible with this programmer socket downloader?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This ESP8266 ESP32 programmer socket is compatible with ESP-01, ESP-01S, ESP-12 (including ESP-12E and ESP-12F), ESP32, and ESP32-WROVER modules. Its versatile socket design makes it a great single tool for developers working across multiple ESP module types.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to solder anything to use this ESP8266 ESP32 downloader board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No soldering is required. 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It simplifies the firmware programming process and is a reliable tool for any ESP-based IoT or Wi-Fi project.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"ESP8266 ESP32 Programmer Socket Downloader – ESP-01 ESP-12\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/esp8266-esp32-programmer-socket-downloader-test-board\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"Default Title","offer_id":50287257649379,"sku":"\u003cnone\u003e","price":15.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/S6cdf996ec93245b58d094ab59480538ci.webp?v=1790295211"},{"product_id":"esp32-s2-development-board-wifi-mcu-wireless-module-32-bit","title":"ESP32-S2 Wi-Fi Development Board – 32-Bit MCU Wireless Module","description":"\n\u003ch2\u003eESP32-S2 Wi-Fi Development Board – 32-Bit Single Core MCU Wireless Module\u003c\/h2\u003e\n\u003cp\u003eTake your embedded projects to the next level with the \u003cstrong\u003eESP32-S2 Development Board\u003c\/strong\u003e. 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Available in bold Red and Black variants, it offers excellent expandability and rock-solid performance for Cartesian robot-style printers and extruder setups.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Designed for Cartesian robot frames and extruder configurations — ideal for Prusa Mendel and similar builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExpandable I\/O:\u003c\/strong\u003e Extendable for additional controls and accessories, with I2C and SPI pins reserved for future expansion.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeater \u0026amp; Fan Control:\u003c\/strong\u003e Features MOSFET outputs for heater\/fan and 3 thermistor circuit MOSFETs for precise temperature management.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrated 5A Protection:\u003c\/strong\u003e Built-in 5A fuse for component security, plus an additional 11A fuse specifically for heated bed control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5 Pololu Stepper Driver Slots:\u003c\/strong\u003e Supports up to 5 Pololu-compatible stepper driver boards — easily swappable via pin header sockets.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePWM MOSFET Outputs:\u003c\/strong\u003e All MOSFETs are wired to PWM pins for maximum flexibility and universality.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGold-Plated Servo Connectors:\u003c\/strong\u003e High-quality gold-plated connectors (rated at 3A) used for end stops, motors, and LEDs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSD Card Support:\u003c\/strong\u003e Onboard SD card capability available via Kliment-Sdramps integration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Heater Indicator:\u003c\/strong\u003e Visual LED indicators show heater output status at a glance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Z-Motor Support:\u003c\/strong\u003e Option to connect 2 motors to the Z-axis for Prusa Mendel-style builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRAMPS 1.4 \/ 1.5 \/ 1.6\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3D Printer Control Board \/ Shield\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRed, Black\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStepper Driver Slots\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 (Pololu-compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater Fuse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5A (main) \/ 11A (heated bed)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermistor Circuits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 MOSFET-based\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBrand New\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × RAMPS 1.4\/1.5\/1.6 Control Board Shield (Red or Black)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're a seasoned maker assembling a custom RepRap printer or a hobbyist upgrading an existing build, the RAMPS control board is a trusted, community-proven solution for 3D printer motion and thermal control. 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With integrated 2.4 GHz WiFi and Bluetooth Low Energy (BLE), these boards are purpose-built for IoT applications, wireless sensors, home automation, and any project requiring seamless wireless connectivity in a compact footprint.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. 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The onboard clock runs at up to 25 MHz.\"}}, {\"@type\": \"Question\", \"name\": \"What voltage does the AD9833 waveform module require?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module operates on a supply voltage of 2.3V to 5.5V, making it compatible with both 3.3V and 5V logic-level systems without the need for additional level shifting in most cases.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"AD9833 Programmable Waveform Generator Module – Sine Square Triangle\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/ad9833-programmable-waveform-generator-module-sine-square-triangle\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"Default Title","offer_id":50287261122787,"sku":"\u003cnone\u003e","price":64.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/Sc26f749b4b5c4f4da141a55d25ae521a2.webp?v=1790295224"},{"product_id":"nrf52840-supermini-development-board-bluetooth-5-nicenano-compatible","title":"NRF52840 SuperMini Dev Board – Bluetooth 5 \u0026 Charging","description":"\n\u003ch2\u003eSuperMini NRF52840 Development Board – Bluetooth 5 Compatible with Nice!Nano V2.0\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eSuperMini NRF52840 Development Board\u003c\/strong\u003e is a compact, powerful microcontroller board built around Nordic Semiconductor's nRF52840 SoC. 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Whether you're building a custom wireless keyboard or working on a low-power Bluetooth IoT project, this board delivers impressive performance in a tiny footprint.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePowerful Wireless:\u003c\/strong\u003e Bluetooth 5.0 with onboard antenna — supports Bluetooth, Thread, Zigbee, ANT, and 2.4GHz protocols\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eARM Cortex-M4F CPU:\u003c\/strong\u003e clocked at 64MHz with 1MB built-in flash memory and 256KB RAM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Charging Management:\u003c\/strong\u003e built-in lithium battery charging chip supporting 3.7V Li-ion charge and discharge\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Standby Power:\u003c\/strong\u003e standby power consumption as low as 1mA with software-controlled LED power cutoff\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePro Micro Pin-Compatible:\u003c\/strong\u003e drop-in replacement for Pro Micro keyboards; same pinout for easy integration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRich Peripheral Support:\u003c\/strong\u003e ADC, PWM, SPI, I2C, UART, USB, GPIO, AES encryption, SHA-256 hashing, and True Random Number Generator (TRNG)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal VCC Control:\u003c\/strong\u003e set P0.13 low to cut power to the 3.3V\/VCC pin, reducing idle current draw from components like RGB LEDs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eChipset: Nordic Semiconductor nRF52840\u003c\/li\u003e\n  \u003cli\u003eProcessor: ARM Cortex-M4F @ 64MHz\u003c\/li\u003e\n  \u003cli\u003eFlash Memory: 1MB built-in\u003c\/li\u003e\n  \u003cli\u003eRAM: 256KB\u003c\/li\u003e\n  \u003cli\u003eWireless: Bluetooth 5.0, Thread, Zigbee, ANT, 2.4GHz\u003c\/li\u003e\n  \u003cli\u003eBattery Interface: 3.7V lithium battery (B+ \/ B- pads)\u003c\/li\u003e\n  \u003cli\u003eStandard Charging Rate: 100mA (BOOST mode: 300mA — requires battery capacity \u0026gt;500mAh)\u003c\/li\u003e\n  \u003cli\u003eConnectivity: USB for programming and power\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePower Supply \u0026amp; Battery\u003c\/h3\u003e\n\u003cp\u003eThe SuperMini NRF52840 supports charging and discharging of a 3.7V lithium battery. The default charging rate is 100mA (a 2000mAh battery takes approximately 20 hours to fully charge). For faster charging, the BOOST pad can be bridged to increase the charging current to 300mA — only use this when the battery capacity exceeds 500mAh.\u003c\/p\u003e\n\u003cp\u003eTo connect an external battery, simply solder the positive terminal to \u003cstrong\u003eB+\u003c\/strong\u003e and the negative terminal to \u003cstrong\u003eB−\u003c\/strong\u003e. \u003cem\u003eNote: Take care to avoid short-circuiting the positive and negative poles during soldering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eEntering Bootloader Mode\u003c\/h3\u003e\n\u003cp\u003eTo enter Bootloader mode, short RST to GND twice within 0.5 seconds. Once connected to your computer via USB, a storage device named \"Nice!Nano\" will appear. You can then drag and drop a \u003ccode\u003e.uf2\u003c\/code\u003e firmware file directly onto the drive to flash the board.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× SuperMini NRF52840 Development Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is the SuperMini NRF52840 board compatible with ZMK firmware for wireless keyboards?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the SuperMini NRF52840 development board is compatible with ZMK firmware, which is a popular open-source keyboard firmware designed for wireless keyboards. Its Nice!Nano V2.0 compatibility and Pro Micro pinout make it a common choice for custom wireless keyboard builds using ZMK.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What battery size should I use with the NRF52840 SuperMini board?\u003c\/h4\u003e\n\u003cp\u003eA: The board supports any 3.7V lithium battery connected via the B+ and B− pads. At the standard 100mA charging rate, a 2000mAh battery takes around 20 hours to fully charge. If you bridge the BOOST pad to enable 300mA charging, ensure your battery capacity is greater than 500mAh to operate safely.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use the NRF52840 SuperMini as a drop-in replacement for a Pro Micro in my keyboard build?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The SuperMini NRF52840 board shares the same pinout as the Pro Micro, meaning it can be used as a direct replacement in almost any Pro Micro-compatible keyboard case or PCB, adding Bluetooth 5.0 wireless capability and built-in battery charging management.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. 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Its Nice!Nano V2.0 compatibility and Pro Micro pinout make it a common choice for custom wireless keyboard builds using ZMK.\"}}, {\"@type\": \"Question\", \"name\": \"What battery size should I use with the NRF52840 SuperMini board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The board supports any 3.7V lithium battery connected via the B+ and B− pads. At the standard 100mA charging rate, a 2000mAh battery takes around 20 hours to fully charge. If you bridge the BOOST pad to enable 300mA charging, ensure your battery capacity is greater than 500mAh to operate safely.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use the NRF52840 SuperMini as a drop-in replacement for a Pro Micro in my keyboard build?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. The SuperMini NRF52840 board shares the same pinout as the Pro Micro, meaning it can be used as a direct replacement in almost any Pro Micro-compatible keyboard case or PCB, adding Bluetooth 5.0 wireless capability and built-in battery charging management.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"NRF52840 SuperMini Dev Board – Bluetooth 5 \u0026 Charging\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/nrf52840-supermini-development-board-bluetooth-5-nicenano-compatible\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"Default Title","offer_id":50287261286627,"sku":"\u003cnone\u003e","price":32.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/S64ac7a1c9ff94cad968c48379656f309D.webp?v=1790295226"},{"product_id":"raspberry-pi-gpio-t-type-expansion-board-40p-cable","title":"Raspberry Pi 4\/3B+ GPIO T-Type Expansion Board \u0026 40P Cable","description":"\n\u003ch2\u003eRaspberry Pi GPIO T-Type Expansion Board with 40-Pin Ribbon Cable\u003c\/h2\u003e\n\u003cp\u003eUnlock the full potential of your Raspberry Pi 4 or 3B+ with this versatile \u003cstrong\u003eT-Type GPIO Expansion Board\u003c\/strong\u003e. Whether you're a hobbyist, student, or professional developer, this expansion board makes prototyping and hardware development effortless by breaking out all 40 GPIO pins into a convenient, clearly labeled breadboard-compatible layout.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose This GPIO Expansion Board?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull 40-Pin Access:\u003c\/strong\u003e Exposes every GPIO pin of your Raspberry Pi 4 or 3B+ for easy access during prototyping and testing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eT-Type Design:\u003c\/strong\u003e Classic T-shaped breakout board that sits neatly on your breadboard, keeping your workspace tidy and organized.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded 40P Ribbon Cable:\u003c\/strong\u003e Comes with a high-quality 40-pin flat ribbon data cable for a reliable, secure connection between the Pi and the expansion board.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Configuration Options:\u003c\/strong\u003e Available in a variety of accessory bundle options to suit different project requirements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearly Labeled Pins:\u003c\/strong\u003e All GPIO pins are clearly labeled directly on the board, so you can identify connections at a glance — no more guessing or constantly referencing pinout diagrams.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBreadboard Compatible:\u003c\/strong\u003e Designed to plug directly into a standard breadboard, making circuit building and experimentation faster and more intuitive.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Reliable:\u003c\/strong\u003e New condition, built for repeated use in electronics projects, classroom environments, and maker spaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible With\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRaspberry Pi 4 Model B\u003c\/li\u003e\n  \u003cli\u003eRaspberry Pi 3 Model B+\u003c\/li\u003e\n  \u003cli\u003eRaspberry Pi 3 Model B\u003c\/li\u003e\n  \u003cli\u003eOther Raspberry Pi models with a standard 40-pin GPIO header\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × T-Type GPIO Expansion Board\u003c\/li\u003e\n  \u003cli\u003e1 × 40-Pin Ribbon Data Cable (options available)\u003c\/li\u003e\n  \u003cli\u003eAdditional accessories depending on selected option\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this Raspberry Pi GPIO expansion board compatible with the Raspberry Pi 4 Model B?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This T-Type GPIO expansion board is fully compatible with the Raspberry Pi 4 Model B, Raspberry Pi 3B+, and any other Raspberry Pi model featuring a standard 40-pin GPIO header. Simply connect the included 40-pin ribbon cable between the board and your Pi to get started.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the T-Type GPIO expansion board used for?\u003c\/h4\u003e\n\u003cp\u003eA: The T-Type expansion board breaks out all 40 GPIO pins from your Raspberry Pi onto a breadboard-friendly layout. This makes it much easier to connect sensors, LEDs, motors, switches, and other electronic components during prototyping without soldering directly to the Pi. It is an essential tool for electronics experiments, maker projects, and educational coursework.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the ribbon cable come included in the package?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, a 40-pin flat ribbon data cable is included with the expansion board. Various bundle options are available at checkout, allowing you to select the configuration that best suits your project needs.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this Raspberry Pi GPIO expansion board compatible with the Raspberry Pi 4 Model B?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! This T-Type GPIO expansion board is fully compatible with the Raspberry Pi 4 Model B, Raspberry Pi 3B+, and any other Raspberry Pi model featuring a standard 40-pin GPIO header. Simply connect the included 40-pin ribbon cable between the board and your Pi to get started.\"}}, {\"@type\": \"Question\", \"name\": \"What is the T-Type GPIO expansion board used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The T-Type expansion board breaks out all 40 GPIO pins from your Raspberry Pi onto a breadboard-friendly layout. This makes it much easier to connect sensors, LEDs, motors, switches, and other electronic components during prototyping without soldering directly to the Pi. 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Whether you're building a DIY robotics project, a GPS navigation system, or a smart meter reading setup, this compact module delivers reliable Bluetooth V2.0 serial communication between microcontrollers, PCs, PDAs, and smartphones — right out of the box.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Master\/Slave Mode:\u003c\/strong\u003e Configurable as either a Bluetooth master or slave module, giving you maximum flexibility for your project.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCSR Mainstream Bluetooth Chip:\u003c\/strong\u003e Uses the industry-standard CSR chipset with Bluetooth V2.0 protocol for stable, proven wireless connectivity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Input Voltage Range:\u003c\/strong\u003e Accepts 3.3 V to 6 V input — compatible with Arduino, Raspberry Pi, and most common microcontroller platforms. \u003cem\u003eDo not exceed 7 V.\u003c\/em\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOnboard 3.3 V Regulation:\u003c\/strong\u003e Features a 150 mA \/ 3.3 V onboard regulator chip for clean, stable power delivery.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDefault Baud Rate 9600:\u003c\/strong\u003e Pre-configured at 9600 baud and fully user-adjustable via AT commands.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Status Indicator:\u003c\/strong\u003e Built-in LED shows connection status at a glance — pulsing when unconnected, steady high when paired and communicating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRe-Search Button:\u003c\/strong\u003e Onboard button (and MCU-controllable high-level input) lets you trigger a fresh device scan without reprogramming.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnti-Reverse Protection Design:\u003c\/strong\u003e 6-pin JY-MCU backboard layout helps prevent incorrect power connections.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard Pin Breakout:\u003c\/strong\u003e Exposes VCC, GND, TXD, RXD, STATE, and EN\/KEY pins for easy wiring and integration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Core module: 28 mm × 15 mm × 2.35 mm | Board size: 15.5 mm × 39.8 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003cth style=\"text-align:left;padding:8px;border:1px solid #ddd;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:8px;border:1px solid #ddd;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eBluetooth Version\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eV2.0\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e3.3 V – 6 V (max 7 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eWorking Current (Pairing)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e~30 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eWorking Current (Connected)\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e~8 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eDefault Baud Rate\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e9600 bps (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eCore Module Size\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e28 mm × 15 mm × 2.35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eBoard Size\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003e15.5 mm × 39.8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eChipset\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eCSR\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eMode\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eMaster \/ Slave (configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd style=\"padding:8px;border:1px solid #ddd;\"\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino, Raspberry Pi \u0026amp; microcontroller projects\u003c\/li\u003e\n  \u003cli\u003eGPS navigation systems\u003c\/li\u003e\n  \u003cli\u003eWater, electricity \u0026amp; gas meter reading systems\u003c\/li\u003e\n  \u003cli\u003eWireless serial data communication\u003c\/li\u003e\n  \u003cli\u003ePC, laptop, PDA \u0026amp; smartphone Bluetooth pairing\u003c\/li\u003e\n  \u003cli\u003eRobotics \u0026amp; automation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eInput voltage must not exceed 7 V — damage may result.\u003c\/li\u003e\n  \u003cli\u003eThis board does \u003cstrong\u003enot\u003c\/strong\u003e have automatic reverse-polarity protection — always connect power correctly.\u003c\/li\u003e\n  \u003cli\u003eThe board alone has no Bluetooth functionality; a compatible Bluetooth module must be installed.\u003c\/li\u003e\n  \u003cli\u003eDefault configuration is slave mode; master mode requires AT command configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × HC-05 Bluetooth Module with JY-MCU Backboard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the difference between master and slave mode on the HC-05 Bluetooth module?\u003c\/h4\u003e\n\u003cp\u003eA: In \u003cstrong\u003eslave mode\u003c\/strong\u003e (the default setting), the HC-05 waits for another Bluetooth device — such as a smartphone, PC, or another master Bluetooth module — to initiate the connection. In \u003cstrong\u003emaster mode\u003c\/strong\u003e, the module actively scans for and connects to nearby slave devices. You can switch between modes using AT commands via the serial interface. This makes the HC-05 one of the most flexible Bluetooth serial modules available for DIY and professional electronics projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the HC-05 module compatible with Arduino?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the HC-05 Bluetooth transceiver module is fully compatible with Arduino boards and most other 3.3 V – 5 V microcontroller platforms, including Raspberry Pi (with a level shifter). Simply connect VCC, GND, TXD, and RXD to your board's corresponding pins and configure the baud rate to match your project's serial settings (default is 9600 bps).\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can two HC-05 modules communicate directly with each other?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — when one HC-05 is set to \u003cstrong\u003emaster mode\u003c\/strong\u003e and the other is set to \u003cstrong\u003eslave mode\u003c\/strong\u003e, the two modules can pair and communicate seamlessly. Note that two slave modules or two master modules cannot pair directly with each other. One must be configured as master and the other as slave for a successful connection.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What voltage should I use to power the HC-05 module?\u003c\/h4\u003e\n\u003cp\u003eA: The HC-05 accepts an input voltage between \u003cstrong\u003e3.3 V and 6 V\u003c\/strong\u003e. The onboard 3.3 V \/ 150 mA regulator handles power conversion internally. \u003cstrong\u003eNever exceed 7 V\u003c\/strong\u003e, as this can permanently damage the module. Always double-check your power supply polarity before connecting, as the board does not include automatic reverse-polarity protection.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between master and slave mode on the HC-05 Bluetooth module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"In slave mode (the default setting), the HC-05 waits for another Bluetooth device — such as a smartphone, PC, or another master Bluetooth module — to initiate the connection. In master mode, the module actively scans for and connects to nearby slave devices. You can switch between modes using AT commands via the serial interface. 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Note that two slave modules or two master modules cannot pair directly with each other. One must be configured as master and the other as slave for a successful connection.\"}}, {\"@type\": \"Question\", \"name\": \"What voltage should I use to power the HC-05 module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The HC-05 accepts an input voltage between 3.3 V and 6 V. The onboard 3.3 V \/ 150 mA regulator handles power conversion internally. Never exceed 7 V, as this can permanently damage the module. Always double-check your power supply polarity before connecting, as the board does not include automatic reverse-polarity protection.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"HC-05 Bluetooth Transceiver Module – Master\/Slave 6-Pin\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/hc-05-bluetooth-transceiver-module-master-slave-6pin-serial\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"HC05","offer_id":50287262073059,"sku":"14:200001438#HC05","price":20.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/Sa32781c5a4f0416081ef5775769095ac8.webp?v=1790295229"},{"product_id":"enc28j60-spi-ethernet-network-module","title":"ENC28J60 SPI Ethernet Network Module for Arduino \u0026 MCU","description":"\n\u003ch2\u003eENC28J60 SPI Interface Ethernet Network Module\u003c\/h2\u003e\n\u003cp\u003eAdd wired internet connectivity to your microcontroller projects with the \u003cstrong\u003eENC28J60 SPI Ethernet Network Module\u003c\/strong\u003e. Designed for makers, hobbyists, and embedded systems developers, this compact module lets you integrate a reliable 10BASE-T Ethernet connection into Arduino, AVR, PIC, ARM, and other SPI-compatible platforms — no complex wiring or drivers required.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eENC28J60 Chipset:\u003c\/strong\u003e Industry-standard standalone Ethernet controller with SPI interface, perfect for low-power and space-constrained designs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSPI Communication:\u003c\/strong\u003e Simple 4-wire SPI interface (MOSI, MISO, SCK, CS) ensures easy integration with virtually any microcontroller.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e10BASE-T Ethernet:\u003c\/strong\u003e Supports full-duplex and half-duplex 10 Mbps Ethernet communication for reliable wired networking.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOnboard RJ45 Connector:\u003c\/strong\u003e Standard RJ45 port with integrated magnetics for a direct, plug-and-play Ethernet connection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Works with both 3.3V and 5V logic systems, making it versatile across a broad range of development boards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Small PCB footprint makes it ideal for embedding into custom enclosures or prototyping setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLibrary Support:\u003c\/strong\u003e Compatible with popular open-source Ethernet libraries for rapid firmware development.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand new.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eController IC:\u003c\/strong\u003e Microchip ENC28J60\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e SPI (up to 20 MHz)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEthernet Standard:\u003c\/strong\u003e IEEE 802.3 \/ 10BASE-T\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3.3V (with 5V-tolerant I\/O)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e RJ45 with integrated transformer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMAC Address:\u003c\/strong\u003e Programmable\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × ENC28J60 SPI Ethernet Network Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino and compatible microcontroller networking projects\u003c\/li\u003e\n  \u003cli\u003eIoT (Internet of Things) prototyping and development\u003c\/li\u003e\n  \u003cli\u003eHome automation and sensor data logging over Ethernet\u003c\/li\u003e\n  \u003cli\u003eEmbedded web servers and network clients\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and STEM education projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is the ENC28J60 Ethernet module compatible with Arduino?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The ENC28J60 SPI Ethernet module is widely used with Arduino boards (Uno, Nano, Mega, etc.) and other SPI-capable microcontrollers. Simply connect the SPI pins (MOSI, MISO, SCK, and CS) to your board and use an open-source ENC28J60 library to get your project online quickly.\u003c\/p\u003e\n\u003ch4\u003eQ: What voltage does the ENC28J60 module operate at?\u003c\/h4\u003e\n\u003cp\u003eA: The ENC28J60 module operates at 3.3V core voltage. Many versions include onboard voltage regulation and 5V-tolerant I\/O lines, making them compatible with both 3.3V and 5V microcontrollers. Check your specific module's datasheet for exact specifications.\u003c\/p\u003e\n\u003ch4\u003eQ: What Ethernet speed does this module support?\u003c\/h4\u003e\n\u003cp\u003eA: This module supports 10BASE-T Ethernet (10 Mbps), which is more than sufficient for typical IoT and embedded networking applications such as sending sensor data, hosting small web servers, or making HTTP requests.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the ENC28J60 Ethernet module compatible with Arduino?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The ENC28J60 SPI Ethernet module is widely used with Arduino boards (Uno, Nano, Mega, etc.) and other SPI-capable microcontrollers. Simply connect the SPI pins (MOSI, MISO, SCK, and CS) to your board and use an open-source ENC28J60 library to get your project online quickly.\"}}, {\"@type\": \"Question\", \"name\": \"What voltage does the ENC28J60 module operate at?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The ENC28J60 module operates at 3.3V core voltage. Many versions include onboard voltage regulation and 5V-tolerant I\/O lines, making them compatible with both 3.3V and 5V microcontrollers. 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Simply align the pin headers and press it into place to get started right away.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the Arduino UNO R3 V5.0 Sensor Shield compatible with all Arduino UNO boards?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the V5.0 Sensor Shield Expansion Board is designed specifically for the Arduino UNO R3 form factor. 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Simply plug it in and start building.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmart Home \u0026amp; IoT Ready:\u003c\/strong\u003e An excellent breadboard alternative for smart home DIY projects, sensor arrays, and any application where pin reuse is critical.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eESP32 Breakout Board Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 7.8 × 6.3 × 1 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCB Material:\u003c\/strong\u003e High-quality FR-4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCB Layers:\u003c\/strong\u003e 2 layers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCB Thickness:\u003c\/strong\u003e 1.6 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePads:\u003c\/strong\u003e Tin plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e 38-Pin ESP32S ESP32 narrow version only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eESP8266 Breakout Board Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 6.35 × 6.3 × 1 cm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCB Material:\u003c\/strong\u003e High-quality FR-4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCB Layers:\u003c\/strong\u003e 2 layers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePCB Thickness:\u003c\/strong\u003e 1.6 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePads:\u003c\/strong\u003e Tin plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e ESP8266 ESP-12E\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × ESP32 or ESP8266 GPIO Breakout Expansion Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cblockquote\u003e\n  \u003cp\u003e\u003cstrong\u003e⚠️ Important Compatibility Note:\u003c\/strong\u003e The ESP32 version of this breakout board is \u003cem\u003eonly\u003c\/em\u003e compatible with the \u003cstrong\u003e38-Pin narrow ESP32S\u003c\/strong\u003e development board. It is NOT suitable for the ESP-WROOM-32 DevKit V1 or any 30-pin ESP32 variant. Please confirm your board's pin count and width before purchasing.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\n\u003chr\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: Which ESP32 boards are compatible with this GPIO breakout board?\u003c\/h4\u003e\n\u003cp\u003eA: This ESP32 breakout board is compatible \u003cstrong\u003eonly\u003c\/strong\u003e with the \u003cstrong\u003e38-Pin narrow version ESP32S ESP32\u003c\/strong\u003e development board (without mounting holes). It is \u003cstrong\u003enot\u003c\/strong\u003e compatible with the ESP-WROOM-32 DevKit V1 version or 30-pin ESP32 variants. Always verify the pin count and width of your ESP32 board before purchasing.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What does \"GPIO 1 into 2\" mean on this expansion board?\u003c\/h4\u003e\n\u003cp\u003eA: The \"GPIO 1 into 2\" feature means this breakout board expands each individual GPIO pin on your ESP32 or ESP8266 development board into \u003cstrong\u003etwo separate, usable connection points\u003c\/strong\u003e. This allows you to connect multiple components or sensors to the same GPIO pin simultaneously, making it ideal for complex IoT and smart home projects where maximizing pin usage is essential.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the ESP8266 version support both screw terminals and pin headers?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The ESP8266 ESP-12E expansion board supports \u003cstrong\u003etwo connection methods\u003c\/strong\u003e: Pin Header Connector and Screw Terminal. 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Whether you're building test equipment, audio synthesizers, or embedded control systems, this module delivers reliable, programmable frequency output with minimal external components.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAD9833 DDS IC:\u003c\/strong\u003e Industry-standard chip for accurate, stable waveform generation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Waveforms:\u003c\/strong\u003e Sine wave and square wave outputs selectable via software\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSerial SPI Interface:\u003c\/strong\u003e Easy integration with microprocessors including Arduino, STM32, PIC, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgrammable Frequency:\u003c\/strong\u003e Wide frequency output range controlled digitally — no analog tuning required\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Small PCB module ideal for breadboarding and embedded projects\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Efficient design suited for battery-powered and portable applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3.3V Compatible:\u003c\/strong\u003e Works seamlessly with 3.3V microcontroller logic levels\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Brand new\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 module per order\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIC Chip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAD9833\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-wire SPI (Serial Peripheral Interface)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWaveform Types\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSine Wave, Square Wave\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProgrammable via microprocessor\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × AD9833 DDS Signal Generator Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis module is perfect for \u003cstrong\u003eelectronics students, embedded systems developers, RF engineers, and DIY enthusiasts\u003c\/strong\u003e who need a reliable, programmable frequency source. It's widely used in:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFunction generator builds\u003c\/li\u003e\n  \u003cli\u003eAudio frequency testing\u003c\/li\u003e\n  \u003cli\u003eSensor excitation circuits\u003c\/li\u003e\n  \u003cli\u003eMicrocontroller-based waveform projects\u003c\/li\u003e\n  \u003cli\u003eEducational electronics labs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What waveforms can the AD9833 DDS Signal Generator Module produce?\u003c\/h4\u003e\n\u003cp\u003eA: The AD9833 module can generate \u003cstrong\u003esine waves and square waves\u003c\/strong\u003e. The output waveform type is selectable via software commands sent through the SPI serial interface, making it easy to switch between waveform types in your code.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this AD9833 module compatible with Arduino?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The AD9833 DDS Signal Generator Module is fully compatible with \u003cstrong\u003eArduino, STM32, PIC, and most other common microcontrollers\u003c\/strong\u003e that support the 3-wire SPI (Serial Peripheral Interface) protocol. Simply connect SCLK, SDATA, and FSYNC pins to your microcontroller's SPI pins and control it programmatically.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What voltage does this module operate at?\u003c\/h4\u003e\n\u003cp\u003eA: This module operates at \u003cstrong\u003e3.3V\u003c\/strong\u003e, making it directly compatible with 3.3V microcontroller boards. If using a 5V Arduino, a logic level converter is recommended to protect the module's inputs.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is DDS (Direct Digital Synthesis) and why is it useful?\u003c\/h4\u003e\n\u003cp\u003eA: \u003cstrong\u003eDirect Digital Synthesis (DDS)\u003c\/strong\u003e is a method of producing waveforms digitally by calculating and outputting signal values from a lookup table, controlled by a clock. DDS allows extremely precise, stable, and easily programmable frequency output — making the AD9833 module ideal for applications that require accurate and repeatable signal generation without manual analog tuning.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What waveforms can the AD9833 DDS Signal Generator Module produce?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The AD9833 module can generate sine waves and square waves. The output waveform type is selectable via software commands sent through the SPI serial interface, making it easy to switch between waveform types in your code.\"}}, {\"@type\": \"Question\", \"name\": \"Is this AD9833 module compatible with Arduino?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The AD9833 DDS Signal Generator Module is fully compatible with Arduino, STM32, PIC, and most other common microcontrollers that support the 3-wire SPI (Serial Peripheral Interface) protocol. Simply connect SCLK, SDATA, and FSYNC pins to your microcontroller's SPI pins and control it programmatically.\"}}, {\"@type\": \"Question\", \"name\": \"What voltage does this module operate at?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This module operates at 3.3V, making it directly compatible with 3.3V microcontroller boards. If using a 5V Arduino, a logic level converter is recommended to protect the module's inputs.\"}}, {\"@type\": \"Question\", \"name\": \"What is DDS (Direct Digital Synthesis) and why is it useful?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Direct Digital Synthesis (DDS) is a method of producing waveforms digitally by calculating and outputting signal values from a lookup table, controlled by a clock. 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Built on SEMTECH's advanced SX1278 wireless transceiver and designed by AI-THINKER Technology, this compact transmission board leverages \u003cstrong\u003eLoRa spread spectrum technology\u003c\/strong\u003e to achieve an impressive communication range of up to \u003cstrong\u003e10,000 meters\u003c\/strong\u003e — making it ideal for smart home automation, meter reading, burglar alarm systems, and IoT deployments across large areas.\u003c\/p\u003e\n\n\u003cp\u003eWith ultra-high sensitivity reaching down to \u003cstrong\u003e-148 dBm\u003c\/strong\u003e and a reliable RF power output of \u003cstrong\u003e+20 dBm (100mW)\u003c\/strong\u003e, the Ra-02 module delivers consistent, interference-resistant signal transmission even in dense residential or commercial environments. Whether you're building a sensor network or integrating wireless control into your smart home project, this module offers the performance and flexibility you need.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLoRa Spread Spectrum Modulation\u003c\/strong\u003e — SEMTECH's patented technology for long-range, low-power wireless transmission\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e10 KM Range\u003c\/strong\u003e — Outstanding communication distance suitable for wide-area deployments\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity: -148 dBm\u003c\/strong\u003e — Receives even very weak signals with clarity\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e+20 dBm (100mW) Output Power\u003c\/strong\u003e — Constant RF output regardless of voltage fluctuations\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Modulation Modes\u003c\/strong\u003e — Supports FSK, GFSK, MSK, GMSK, LoRa, and OOK\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHalf-Duplex SPI Communication\u003c\/strong\u003e — Easy integration with microcontrollers such as Arduino and Raspberry Pi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProgrammable Bit Rates\u003c\/strong\u003e — Up to 300 kbps for flexible data throughput\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e127 dB RSSI Dynamic Range\u003c\/strong\u003e — Accurately monitors signal strength over a wide range\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomatic RF Signal Detection\u003c\/strong\u003e — CAD mode and high-speed AFC for reliable packet detection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCRC Packet Engine\u003c\/strong\u003e — Handles packets up to 256 bytes with built-in error checking\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.4G IPX (IPEX) Antenna Connector\u003c\/strong\u003e — Compatible with external spring antenna (included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShielded Housing\u003c\/strong\u003e — Reduces electromagnetic interference for cleaner signal performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Dual-Row Stamp-Hole Patch Package\u003c\/strong\u003e — Small footprint for easy PCB integration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir Wake-Up Function\u003c\/strong\u003e — Minimizes current consumption during idle periods\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e433 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChipset\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSEMTECH SX1278\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 10 km\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRF Output Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+20 dBm (100 mW)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-148 dBm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLoRa, FSK, GFSK, MSK, GMSK, OOK\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHalf-Duplex SPI\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Bit Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAntenna Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIPX (IPEX)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRSSI Dynamic Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e127 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual-row stamp-hole patch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSmart Home Automation\u003c\/li\u003e\n  \u003cli\u003eIoT Sensor Networks\u003c\/li\u003e\n  \u003cli\u003eRemote Meter Reading\u003c\/li\u003e\n  \u003cli\u003eBurglar Alarm \u0026amp; Security Systems\u003c\/li\u003e\n  \u003cli\u003eIndustrial Wireless Control\u003c\/li\u003e\n  \u003cli\u003eArduino \/ Raspberry Pi Projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Ra-02 SX1278 433MHz LoRa Wireless Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What microcontrollers is the Ra-02 SX1278 LoRa 433MHz module compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The Ra-02 SX1278 module communicates via half-duplex SPI, making it compatible with a wide range of microcontrollers including Arduino (Uno, Mega, Nano), Raspberry Pi, ESP32, ESP8266, and STM32. Most popular LoRa libraries (such as RadioHead and LoRa by Sandeep Mistry) support the SX1278 chipset out of the box.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the real-world range of the Ra-02 SX1278 433MHz LoRa module?\u003c\/h4\u003e\n\u003cp\u003eA: The Ra-02 module is rated for up to 10 km in open, line-of-sight conditions. In urban or indoor environments with obstacles and interference, the effective range will be shorter but still significantly greater than standard 2.4GHz or Bluetooth modules, making it excellent for smart home and IoT applications across large properties or neighbourhoods.\u003c\/p\u003e\n\u003ch4\u003eQ: Does the Ra-02 SX1278 module require an external antenna?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the Ra-02 uses an IPX (IPEX) antenna connector. A spring antenna is included in the package. For extended range or specific deployment conditions, compatible external antennas with an IPX connector can also be used.\u003c\/p\u003e\n\u003ch4\u003eQ: What modulation modes does the SX1278-based Ra-02 module support?\u003c\/h4\u003e\n\u003cp\u003eA: The Ra-02 supports multiple modulation modes including LoRa (for long-range spread spectrum), FSK, GFSK, MSK, GMSK, and OOK. This versatility makes it suitable for a broad range of wireless communication protocols and custom IoT designs.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What microcontrollers is the Ra-02 SX1278 LoRa 433MHz module compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Ra-02 SX1278 module communicates via half-duplex SPI, making it compatible with a wide range of microcontrollers including Arduino (Uno, Mega, Nano), Raspberry Pi, ESP32, ESP8266, and STM32. Most popular LoRa libraries (such as RadioHead and LoRa by Sandeep Mistry) support the SX1278 chipset out of the box.\"}}, {\"@type\": \"Question\", \"name\": \"What is the real-world range of the Ra-02 SX1278 433MHz LoRa module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Ra-02 module is rated for up to 10 km in open, line-of-sight conditions. In urban or indoor environments with obstacles and interference, the effective range will be shorter but still significantly greater than standard 2.4GHz or Bluetooth modules, making it excellent for smart home and IoT applications across large properties or neighbourhoods.\"}}, {\"@type\": \"Question\", \"name\": \"Does the Ra-02 SX1278 module require an external antenna?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the Ra-02 uses an IPX (IPEX) antenna connector. A spring antenna is included in the package. For extended range or specific deployment conditions, compatible external antennas with an IPX connector can also be used.\"}}, {\"@type\": \"Question\", \"name\": \"What modulation modes does the SX1278-based Ra-02 module support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Ra-02 supports multiple modulation modes including LoRa (for long-range spread spectrum), FSK, GFSK, MSK, GMSK, and OOK. This versatility makes it suitable for a broad range of wireless communication protocols and custom IoT designs.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Ra-02 SX1278 LoRa 433MHz Wireless Module 10KM Smart Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/ra-02-sx1278-lora-433mhz-wireless-module-10km-smart-home\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"Ra-02 with Antenna2 \/ 1pc","offer_id":50287263449315,"sku":"14:351074#Ra-02 with Antenna2;3:201010228#1pc","price":25.41,"currency_code":"USD","in_stock":true},{"title":"Ra-02 with Antenna \/ 1pc","offer_id":50287263482083,"sku":"14:1202#Ra-02 with Antenna;3:201010228#1pc","price":23.31,"currency_code":"USD","in_stock":true},{"title":"Ra-02 with Antenna1 \/ 1pc","offer_id":50287263514851,"sku":"14:350852#Ra-02 with Antenna1;3:201010228#1pc","price":24.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/S825acc3c61be48fdb1932fca1a67abfc4.webp?v=1790295241"},{"product_id":"arduino-nano-uno-atmega328-multi-purpose-expansion-board","title":"Arduino Nano \u0026 UNO ATMEGA328 Multi-Purpose Expansion Board","description":"\u003ch2\u003eArduino Nano \u0026amp; UNO ATMEGA328 Multi-Purpose Expansion Learning Board\u003c\/h2\u003e\n\u003cp\u003eTake your Arduino projects to the next level with this versatile \u003cstrong\u003eMulti-Purpose Expansion Board\u003c\/strong\u003e, designed for compatibility with Arduino Nano 3.0 and UNO ATMEGA328 microcontrollers. Whether you're a beginner exploring electronics or an experienced maker building complex prototypes, this expansion board provides a convenient and organized platform to connect sensors, modules, and components with ease.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works seamlessly with Arduino Nano 3.0 and UNO ATMEGA328 boards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Purpose Design:\u003c\/strong\u003e Supports a broad range of project types — from sensor integration to relay control and beyond.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConvenient Pin Expansion:\u003c\/strong\u003e Breaks out all I\/O, power, and ground pins for quick and reliable connections.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Modular:\u003c\/strong\u003e Neat, space-saving PCB layout that fits easily into project enclosures and breadboard setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLearning-Friendly:\u003c\/strong\u003e Clearly labeled pins make it ideal for students, hobbyists, and makers learning electronics and embedded systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e High-quality PCB with no high-concern chemicals, built for reliable, long-term use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNew Condition:\u003c\/strong\u003e Ships brand new in module packaging, ready to use out of the box.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Boards:\u003c\/strong\u003e Arduino Nano 3.0, Arduino UNO ATMEGA328\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Multi-Purpose Expansion \/ Switch Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomized:\u003c\/strong\u003e Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Concern Chemicals:\u003c\/strong\u003e None\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThis expansion board is perfect for \u003cstrong\u003eArduino learners, electronics hobbyists, STEM students, and DIY makers\u003c\/strong\u003e who want a reliable, all-in-one platform to prototype and build projects without the hassle of tangled wires or messy breadboard layouts. It simplifies wiring and helps you focus on coding and creativity.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this Arduino Nano expansion board compatible with Arduino UNO ATMEGA328?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This multi-purpose expansion board is designed to be compatible with both Arduino Nano 3.0 and Arduino UNO ATMEGA328 microcontrollers, making it a flexible choice for a wide range of projects and learning setups.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this expansion board suitable for beginners learning Arduino?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. 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While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this Arduino Nano expansion board compatible with Arduino UNO ATMEGA328?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! This multi-purpose expansion board is designed to be compatible with both Arduino Nano 3.0 and Arduino UNO ATMEGA328 microcontrollers, making it a flexible choice for a wide range of projects and learning setups.\"}}, {\"@type\": \"Question\", \"name\": \"Is this expansion board suitable for beginners learning Arduino?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. 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Whether you're a hobbyist, student, or embedded systems enthusiast, this compact board packs impressive functionality into an incredibly small footprint. Made in China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArduino IDE Compatible:\u003c\/strong\u003e Supports Arduino IDE 1.0+ on macOS, Windows, and Linux — get started in minutes.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Power Options:\u003c\/strong\u003e Power via USB or an external source (5V or 7–35V) with automatic source selection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOn-Board 500mA 5V Voltage Regulator:\u003c\/strong\u003e Stable power delivery for your circuits and peripherals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-in USB Interface:\u003c\/strong\u003e Program and communicate directly over USB — no extra programmer needed. 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The Digispark ATTINY85 development board fully supports the Arduino IDE version 1.0 and above on macOS, Windows, and Linux. You can program it directly over USB after installing the Digispark board definitions in your IDE.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How many I\/O pins does the ATTINY85 Digispark board have?\u003c\/h4\u003e\n\u003cp\u003eA: The board features 6 I\/O pins in total. Two of these are shared with the USB interface but can still be used as general-purpose I\/O when your program is not actively communicating over USB, giving you maximum flexibility for your project.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I power the Digispark ATTINY85 module without USB?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The board supports both USB power (5V) and an external power source ranging from 7V to 35V. It automatically selects the appropriate power source, making it versatile for battery-powered or externally powered applications.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does the Digispark ATTINY85 board support I2C and SPI communication?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The ATTINY85 module supports both I2C and SPI communication protocols via the built-in USI (Universal Serial Interface), making it straightforward to connect sensors, displays, and other peripherals.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the Digispark ATTINY85 board compatible with the Arduino IDE?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The Digispark ATTINY85 development board fully supports the Arduino IDE version 1.0 and above on macOS, Windows, and Linux. You can program it directly over USB after installing the Digispark board definitions in your IDE.\"}}, {\"@type\": \"Question\", \"name\": \"How many I\/O pins does the ATTINY85 Digispark board have?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The board features 6 I\/O pins in total. 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Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e4 Independent Key Buttons:\u003c\/strong\u003e Each key operates independently for glitch-free, reliable input detection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArduino Compatible:\u003c\/strong\u003e Designed to integrate seamlessly with Arduino boards and other MCU platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact 1x4 Layout:\u003c\/strong\u003e Space-saving linear form factor — ideal for breadboard and PCB integration.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY-Friendly Kit:\u003c\/strong\u003e Perfect for student class projects, graduation design experiments, and hobbyist builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Wiring:\u003c\/strong\u003e Clear pinout makes setup straightforward — spend less time wiring and more time coding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNew Condition:\u003c\/strong\u003e Shipped brand new, ready for your next build.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Built with safety in mind — no hazardous substances.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Switch \/ Keypad Module\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e 1x4 (4 independent keys)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Arduino, AVR, STM32, ESP8266\/ESP32, and most MCU platforms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino beginner and advanced projects\u003c\/li\u003e\n  \u003cli\u003eStudent class design experiments\u003c\/li\u003e\n  \u003cli\u003eGraduation and capstone project builds\u003c\/li\u003e\n  \u003cli\u003eMenu navigation and user input interfaces\u003c\/li\u003e\n  \u003cli\u003eRobotics and automation prototyping\u003c\/li\u003e\n  \u003cli\u003eDIY electronics hobbyist kits\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this 1x4 keypad module compatible with Arduino Uno and Nano?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The 1x4 independent key button keypad keyboard module is fully compatible with Arduino Uno, Nano, Mega, and most other Arduino boards, as well as a wide range of MCU platforms including STM32, ESP8266, and ESP32. Simply connect the keypad pins to your digital input pins and start coding.\u003c\/p\u003e\n\u003ch4\u003eQ: How many keys does this keypad module have, and are they truly independent?\u003c\/h4\u003e\n\u003cp\u003eA: This module features 4 independent key buttons arranged in a 1x4 linear layout. Each button operates independently, meaning pressing one key does not affect the reading of the others — making it ideal for clean, reliable input in your Arduino and MCU projects.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this kit suitable for student class design and graduation projects?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. This DIY kit is specifically designed with students and hobbyists in mind. Its straightforward wiring, compact design, and broad MCU compatibility make it an excellent choice for class experiments, graduation project builds, and hands-on electronics learning.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this 1x4 keypad module compatible with Arduino Uno and Nano?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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The recommended input voltage is 7–12V DC, with an absolute limit range of 6–20V DC, consistent with standard Arduino power specifications.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. 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For dynamic adjustment, remove R27 and connect a potentiometer (20kΩ–50kΩ) to the S–G–G pad for on-the-fly reverb control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Operates across DC 6V to 15V, accommodating a range of power supplies commonly used in electronics projects.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGreat Value Pack:\u003c\/strong\u003e Get 10 modules in a single order — ideal for multiple builds, prototyping, or keeping spares on hand.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Preamplifier Required (or Included):\u003c\/strong\u003e This is a dedicated reverb\/reverberation board only. Pair it with your own preamp stage for a complete signal chain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eThese PT2399 reverb modules are perfect for electronics hobbyists, audio circuit designers, musicians building custom effects pedals, and makers working on karaoke systems, mixers, or any microphone-based audio project requiring reverb or echo effects.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Does the PT2399 reverb plate module include a preamplifier function?\u003c\/h4\u003e\n\u003cp\u003eA: No. This PT2399 microphone reverb plate module is a dedicated reverberation board only and does not include a preamplifier function. You will need to add an external preamp stage to your signal chain if amplification is required before the reverb stage.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I adjust the reverb depth on the PT2399 reverb board?\u003c\/h4\u003e\n\u003cp\u003eA: The reverb depth is controlled by resistor R27 on the board. To make the reverb depth adjustable, remove R27 and connect a potentiometer with a value in the range of 20kΩ to 50kΩ to the S–G–G pad on the board. 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They are especially popular among electronics hobbyists and audio makers.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. 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Powered by the ESP32-WROOM-32 module and featuring a \u003cstrong\u003edual-core 32-bit MCU\u003c\/strong\u003e with integrated WiFi and Bluetooth, this compact board is the go-to choice for makers, students, and engineers alike. The \u003cstrong\u003eType-C USB interface\u003c\/strong\u003e paired with the \u003cstrong\u003eCH340C USB driver chip\u003c\/strong\u003e ensures excellent system compatibility, faster download speeds, and rock-solid stability.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e ESP32-DevKitC-32 | Module: ESP32-WROOM-32\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMain Chip:\u003c\/strong\u003e ESP32-DOWDQ6-V3 — Dual-Core 32-bit MCU with integrated WiFi \u0026amp; Bluetooth\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMemory:\u003c\/strong\u003e 520 KB SRAM, 448 KB ROM, 16 KB SRAM in RTC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal Flash Storage:\u003c\/strong\u003e 4 MB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Driver:\u003c\/strong\u003e CH340C — higher download speed, improved stability \u0026amp; compatibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Options:\u003c\/strong\u003e USB power supply, external 3.3 V, or VIN wide-voltage input (5–12 V; battery version max 5.5 V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Low Power Consumption\u003c\/strong\u003e — ideal for battery-powered IoT applications\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e 52 × 28 mm | ~9.5 g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Platform Programming Support:\u003c\/strong\u003e Arduino IDE, Mixly, Mind+, MicroPython, and more\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're prototyping a smart home device, building a wireless sensor node, or learning embedded programming, the ESP32-DevKitC-32 gives you the power and flexibility to bring your ideas to life. Its broad software support means beginners and advanced developers can get up and running quickly.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eESP32-DevKitC-32\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eESP32-WROOM-32\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMCU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eESP32-DOWDQ6-V3, Dual-Core 32-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSRAM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e520 KB + 16 KB (RTC)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eROM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e448 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFlash\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 MB external\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSB Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eType-C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSB Driver Chip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCH340C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB \/ 3.3 V \/ VIN 5–12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e52 × 28 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e~9.5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × ESP32-DevKitC-32 Development Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What programming environments are compatible with the ESP32-DevKitC-32 development board?\u003c\/h4\u003e\n\u003cp\u003eA: The ESP32-DevKitC-32 supports a wide range of programming environments including \u003cstrong\u003eArduino IDE\u003c\/strong\u003e, Mixly, Mind+, and \u003cstrong\u003eMicroPython\u003c\/strong\u003e, making it suitable for both beginners and experienced developers working on IoT and embedded projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What power supply options does the ESP32 DevKitC-32 board support?\u003c\/h4\u003e\n\u003cp\u003eA: The board supports three power supply modes: \u003cstrong\u003eUSB power via the Type-C connector\u003c\/strong\u003e, an external 3.3 V supply, and a VIN wide-voltage input ranging from \u003cstrong\u003e5 V to 12 V\u003c\/strong\u003e (battery version supports up to 5.5 V input), offering maximum flexibility for your project setup.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Why does this ESP32 board use the CH340C USB driver chip?\u003c\/h4\u003e\n\u003cp\u003eA: The \u003cstrong\u003eCH340C chip\u003c\/strong\u003e provides superior system compatibility across Windows, macOS, and Linux, enables faster firmware download speeds, and offers greater connection stability compared to many generic USB-to-serial chips — making your development workflow smoother and more reliable.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this ESP32 development board suitable for WiFi and Bluetooth IoT projects?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The onboard \u003cstrong\u003eESP32-WROOM-32 module\u003c\/strong\u003e integrates both WiFi (802.11 b\/g\/n) and Bluetooth (Classic + BLE) directly into the dual-core MCU, making it an excellent choice for wireless IoT applications, home automation, data logging, and connected sensor projects.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What programming environments are compatible with the ESP32-DevKitC-32 development board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The ESP32-DevKitC-32 supports a wide range of programming environments including Arduino IDE, Mixly, Mind+, and MicroPython, making it suitable for both beginners and experienced developers working on IoT and embedded projects.\"}}, {\"@type\": \"Question\", \"name\": \"What power supply options does the ESP32 DevKitC-32 board support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The board supports three power supply modes: USB power via the Type-C connector, an external 3.3 V supply, and a VIN wide-voltage input ranging from 5 V to 12 V (battery version supports up to 5.5 V input), offering maximum flexibility for your project setup.\"}}, {\"@type\": \"Question\", \"name\": \"Why does this ESP32 board use the CH340C USB driver chip?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The CH340C chip provides superior system compatibility across Windows, macOS, and Linux, enables faster firmware download speeds, and offers greater connection stability compared to many generic USB-to-serial chips — making your development workflow smoother and more reliable.\"}}, {\"@type\": \"Question\", \"name\": \"Is this ESP32 development board suitable for WiFi and Bluetooth IoT projects?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. The onboard ESP32-WROOM-32 module integrates both WiFi (802.11 b\/g\/n) and Bluetooth (Classic + BLE) directly into the dual-core MCU, making it an excellent choice for wireless IoT applications, home automation, data logging, and connected sensor projects.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"ESP32 DevKitC-32 Dev Board USB-C WiFi Bluetooth Dual Core CH340C\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/esp32-devkitc-32-development-board-usb-c-wifi-bluetooth-dual-core-ch340c\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"ESP32 30P DEVKIT V1","offer_id":50287266824419,"sku":"14:1202#ESP32 30P DEVKIT V1","price":11.66,"currency_code":"USD","in_stock":true},{"title":"CH9102 welding","offer_id":50287266857187,"sku":"14:350852#CH9102 welding","price":27.93,"currency_code":"USD","in_stock":true},{"title":"CH340 Type-C welding","offer_id":50287266889955,"sku":"14:351074#CH340 Type-C welding","price":27.41,"currency_code":"USD","in_stock":true},{"title":"CP2102 no welding","offer_id":50287266922723,"sku":"14:4044226#CP2102 no welding","price":29.82,"currency_code":"USD","in_stock":true},{"title":"CP2102 welding","offer_id":50287266955491,"sku":"14:201659813#CP2102 welding","price":30.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/S9f08203f7a1845cc9d2c45cb9318ad3bl.webp?v=1790295268"},{"product_id":"ttl-to-rs485-converter-module-3v-5v-arduino-arm-fpga-mcu","title":"TTL to RS485 Converter Module 3.3V 5V for Arduino ARM FPGA","description":"\n\u003ch2\u003eTTL to RS485 Conversion Module — Reliable Serial Communication for Arduino, ARM, FPGA \u0026amp; MCU\u003c\/h2\u003e\n\u003cp\u003eUpgrade your embedded projects with this compact, high-performance \u003cstrong\u003eTTL to RS485 Converter Module\u003c\/strong\u003e. Supporting both \u003cstrong\u003e3.3V and 5V\u003c\/strong\u003e supply voltages, this module bridges the gap between your microcontroller's TTL serial port and RS485-level devices — making it the ideal interface solution for Arduino, ARM, FPGA, and other MCU platforms. Made in China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e74HC14 + SP485 Chip Combination:\u003c\/strong\u003e Premium-grade chips deliver stable, high-quality signal conversion between TTL and RS485 levels, ensuring reliable data transmission across your bus.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLightning Gas Discharge Tube:\u003c\/strong\u003e Built-in gas discharge tube absorbs and dissipates atmospheric overvoltage spikes, protecting your equipment from surge events.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTriple TVS Transient Suppression Diodes:\u003c\/strong\u003e Three sets of transient voltage suppressor (TVS) diodes guard against electrostatic discharge (ESD), induced surges, and other transient overvoltage events for comprehensive circuit protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal Fuse Overcurrent Protection:\u003c\/strong\u003e An integrated thermal fuse instantly cuts power if current exceeds safe thresholds, preventing damage from short circuits or overloads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e120Ω Termination Resistor:\u003c\/strong\u003e Built-in 120Ω termination resistor — simply short R12 to engage it. Effectively eliminates signal reflection and echo interference, optimizing RS485 bus signal integrity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLED Status Indicators:\u003c\/strong\u003e Onboard PWR (power), RXD (receive), and TXD (transmit) LEDs let you monitor module activity at a glance in real time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e DC 3.3V (1.8V–5.5V) \/ DC 5V (2V–5.5V)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent:\u003c\/strong\u003e 8–10A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommunication Interface:\u003c\/strong\u003e TTL (UART)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 45 × 20 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Type:\u003c\/strong\u003e TQFP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWiring Guide\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTTL (UART) Terminal:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVCC\u003c\/strong\u003e — Connect to DC 3.3V or 5V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGND\u003c\/strong\u003e — Connect to system ground\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTXD\u003c\/strong\u003e — Connect to MCU RX pin (signal flow: MCU.RX ← Module ← RS485)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRXD\u003c\/strong\u003e — Connect to MCU TX pin (signal flow: MCU.TX → Module → RS485)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRS485 Terminal:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eA+\u003c\/strong\u003e — Connect to RS485 A+\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eB−\u003c\/strong\u003e — Connect to RS485 B−\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGND\u003c\/strong\u003e — Optional; may be left unconnected\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCommon Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eConnecting MCU\/ARM\/FPGA\/Arduino TTL serial ports to RS485-level devices\u003c\/li\u003e\n  \u003cli\u003eIndustrial serial communication and bus expansion\u003c\/li\u003e\n  \u003cli\u003eHome automation and sensor network integration\u003c\/li\u003e\n  \u003cli\u003eSerial port expansion for embedded systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this TTL to RS485 converter module compatible with Arduino and Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This TTL to RS485 conversion module is compatible with Arduino, ARM, FPGA, Raspberry Pi, and virtually any MCU that uses a standard TTL (UART) serial interface. It supports both 3.3V and 5V logic levels, making it highly versatile across platforms.\u003c\/p\u003e\n\u003ch4\u003eQ: Do I need to manually control the data direction (TX\/RX switching)?\u003c\/h4\u003e\n\u003cp\u003eA: No. This module features automatic data direction control, so you do not need to manually toggle a direction pin. The SP485 chip handles the switching between transmit and receive modes automatically, simplifying your firmware and wiring.\u003c\/p\u003e\n\u003ch4\u003eQ: What protection does this module offer against surges and static discharge?\u003c\/h4\u003e\n\u003cp\u003eA: The module is equipped with a lightning gas discharge tube, three TVS transient suppression diodes, and a thermal fuse. Together, these components protect against ESD events, lightning-induced surges, overcurrent conditions, and transient overvoltage — making it suitable for industrial and outdoor environments.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I enable the 120Ω termination resistor?\u003c\/h4\u003e\n\u003cp\u003eA: Simply short the R12 jumper on the board to connect the built-in 120Ω termination resistor to the RS485 bus. This is recommended when the module is at one end of a long RS485 cable run to eliminate signal reflections and maintain signal integrity.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is this TTL to RS485 converter module compatible with Arduino and Raspberry Pi?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! This TTL to RS485 conversion module is compatible with Arduino, ARM, FPGA, Raspberry Pi, and virtually any MCU that uses a standard TTL (UART) serial interface. It supports both 3.3V and 5V logic levels, making it highly versatile across platforms.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to manually control the data direction (TX\/RX switching)?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. This module features automatic data direction control, so you do not need to manually toggle a direction pin. The SP485 chip handles the switching between transmit and receive modes automatically, simplifying your firmware and wiring.\"}}, {\"@type\": \"Question\", \"name\": \"What protection does this module offer against surges and static discharge?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module is equipped with a lightning gas discharge tube, three TVS transient suppression diodes, and a thermal fuse. 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This is recommended when the module is at one end of a long RS485 cable run to eliminate signal reflections and maintain signal integrity.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"TTL to RS485 Converter Module 3.3V 5V for Arduino ARM FPGA\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/ttl-to-rs485-converter-module-3v-5v-arduino-arm-fpga-mcu\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"DC 5V","offer_id":50287267414243,"sku":"3:1981284404#DC 5V","price":22.72,"currency_code":"USD","in_stock":true},{"title":"DC 3.3V","offer_id":50287267447011,"sku":"3:201010228#DC 3.3V","price":22.72,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/S9e4ada310422463e872d58e64f7cb4fex.webp?v=1790295272"},{"product_id":"rgb-ws2812b-4x8-led-matrix-gpio-expansion-board-raspberry-pi","title":"RGB 4×8 WS2812B LED Matrix GPIO Board for Raspberry Pi 4B 3B","description":"\u003ch2\u003eRGB Full Color 4×8 WS2812B LED Matrix Screen GPIO Expansion Board for Raspberry Pi 4B \/ 3B\u003c\/h2\u003e\n\n\u003cp\u003eBring your Raspberry Pi projects to life with this vibrant \u003cstrong\u003eRGB Full Color 4×8 LED WS2812B Matrix Screen GPIO Expansion Board\u003c\/strong\u003e. Featuring 32 individually addressable WS2812B LEDs arranged in a compact 4×8 grid, this expansion board plugs directly onto your Raspberry Pi's GPIO header — no soldering required. Whether you're building a mini LED display, a live data visualizer, an ambient lighting controller, or an interactive art project, this board delivers eye-catching full-color results with minimal setup.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e32 Addressable RGB LEDs\u003c\/strong\u003e — 4 rows × 8 columns of WS2812B smart LEDs, each independently controllable for millions of color combinations\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect GPIO Expansion\u003c\/strong\u003e — Plugs seamlessly onto the 40-pin GPIO header of Raspberry Pi 4B and 3B models\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWS2812B Protocol\u003c\/strong\u003e — Industry-standard single-wire data protocol for easy programming with popular libraries (e.g., rpi_ws281x, NeoPixel)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull Color Display\u003c\/strong\u003e — Each LED supports 256 brightness levels per channel (R, G, B) for true 16 million color output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight\u003c\/strong\u003e — Minimal footprint designed to sit flush on your Raspberry Pi without obstructing other peripherals\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlug-and-Play Design\u003c\/strong\u003e — No extra wiring or soldering needed; powers directly from the Raspberry Pi's 5V GPIO pins\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeginner \u0026amp; Maker Friendly\u003c\/strong\u003e — Compatible with Python and compatible with popular maker-community tutorials and open-source code\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCondition\u003c\/strong\u003e: New\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLED Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWS2812B (Addressable RGB)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLED Matrix\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 rows × 8 columns (32 LEDs total)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRaspberry Pi 4B, Raspberry Pi 3B\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40-pin GPIO Header\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtocol\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWS2812B Single-Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 million colors (24-bit RGB)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVia Raspberry Pi GPIO 5V pins\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 module\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China (Mainland)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × RGB WS2812B 4×8 LED Matrix GPIO Expansion Board\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRaspberry Pi LED matrix displays and scrolling text projects\u003c\/li\u003e\n  \u003cli\u003eDIY smart home ambient lighting indicators\u003c\/li\u003e\n  \u003cli\u003eData visualization (CPU load, weather, notifications)\u003c\/li\u003e\n  \u003cli\u003eEducational electronics and coding workshops\u003c\/li\u003e\n  \u003cli\u003eInteractive maker fair and STEM projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: Which Raspberry Pi models is this WS2812B GPIO expansion board compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: This RGB LED matrix expansion board is designed to work with the \u003cstrong\u003eRaspberry Pi 4B and Raspberry Pi 3B\u003c\/strong\u003e. It connects directly to the standard 40-pin GPIO header found on both models, so no adapters or extra cables are required.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What software or libraries do I need to control the WS2812B LEDs on Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: The board uses the standard \u003cstrong\u003eWS2812B single-wire protocol\u003c\/strong\u003e, which is supported by popular open-source libraries such as \u003cstrong\u003erpi_ws281x\u003c\/strong\u003e (available via pip) and Adafruit's \u003cstrong\u003eNeoPixel library\u003c\/strong\u003e for Python. Plenty of community tutorials and sample scripts are freely available online to get you started quickly.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this board require an external power supply for the LEDs?\u003c\/h4\u003e\n\u003cp\u003eA: For typical use at moderate brightness levels, the board draws power directly from the Raspberry Pi's 5V GPIO pins. If you plan to run all 32 LEDs at maximum brightness simultaneously, it is recommended to monitor your Pi's power supply capacity (using a quality 3A+ USB-C power adapter for Pi 4B) to ensure stable operation.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this RGB LED matrix board for scrolling text or animations?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely! The 4×8 grid of individually addressable WS2812B LEDs is well-suited for scrolling text, animations, and color patterns. With Python and a WS2812B-compatible library, you can program custom animations, pixel art, and real-time data displays with just a few lines of code.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Which Raspberry Pi models is this WS2812B GPIO expansion board compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This RGB LED matrix expansion board is designed to work with the Raspberry Pi 4B and Raspberry Pi 3B. It connects directly to the standard 40-pin GPIO header found on both models, so no adapters or extra cables are required.\"}}, {\"@type\": \"Question\", \"name\": \"What software or libraries do I need to control the WS2812B LEDs on Raspberry Pi?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The board uses the standard WS2812B single-wire protocol, which is supported by popular open-source libraries such as rpi_ws281x (available via pip) and Adafruit's NeoPixel library for Python. Plenty of community tutorials and sample scripts are freely available online to get you started quickly.\"}}, {\"@type\": \"Question\", \"name\": \"Does this board require an external power supply for the LEDs?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"For typical use at moderate brightness levels, the board draws power directly from the Raspberry Pi's 5V GPIO pins. If you plan to run all 32 LEDs at maximum brightness simultaneously, it is recommended to monitor your Pi's power supply capacity (using a quality 3A+ USB-C power adapter for Pi 4B) to ensure stable operation.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this RGB LED matrix board for scrolling text or animations?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely! The 4×8 grid of individually addressable WS2812B LEDs is well-suited for scrolling text, animations, and color patterns. With Python and a WS2812B-compatible library, you can program custom animations, pixel art, and real-time data displays with just a few lines of code.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"RGB 4×8 WS2812B LED Matrix GPIO Board for Raspberry Pi 4B 3B\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/rgb-ws2812b-4x8-led-matrix-gpio-expansion-board-raspberry-pi\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"01","offer_id":50287269413091,"sku":"14:1202#01","price":61.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/Sc8f4755e9202468aa6206e31f0d7d4424.webp?v=1790295275"},{"product_id":"copper-heatsink-kit-raspberry-pi-4-3-2-1-model-b-a-plus","title":"Copper Heatsink Kit for Raspberry Pi 4 3 2 1 Model B A+","description":"\u003ch2\u003eStay Cool, Stay Fast — Copper Heatsink Kit for Raspberry Pi\u003c\/h2\u003e\n\u003cp\u003eKeep your Raspberry Pi running at peak performance with this premium \u003cstrong\u003eCopper Raspberry Pi Heatsink Set\u003c\/strong\u003e. Engineered for efficient thermal dissipation, this kit draws heat away from your processor, RAM, LAN chip, and other critical components — helping your mini PC stay stable during intensive tasks, overclocking, and extended operation sessions.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're running a media center, home server, or IoT project, this compact copper heatsink set is a simple, affordable upgrade that makes a real difference in system stability and longevity.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium Copper Construction:\u003c\/strong\u003e Copper's superior thermal conductivity draws heat away from components faster than aluminum alternatives.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Designed to fit Raspberry Pi 4, 3, 2, and 1 — including Model B, Model A, and Plus variants.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull Coverage Kit:\u003c\/strong\u003e Includes heatsinks for the processor (CPU), RAM memory chip, LAN\/Ethernet chip, and other onboard components.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Pre-applied thermal adhesive backing for a quick, tool-free, mess-free install — ready in seconds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow Profile Design:\u003c\/strong\u003e Slim and compact to fit inside most Raspberry Pi cases without modification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePassive Cooling:\u003c\/strong\u003e Silent, fanless design — no moving parts, no noise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand New Condition:\u003c\/strong\u003e Each set is brand new and individually packaged (SMD packaging).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCopper heatsink for CPU\/Processor\u003c\/li\u003e\n  \u003cli\u003eCopper heatsink for RAM Memory chip\u003c\/li\u003e\n  \u003cli\u003eCopper heatsink for LAN\/Ethernet chip\u003c\/li\u003e\n  \u003cli\u003eAdditional heatsinks for other key onboard chips\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRaspberry Pi 4 Model B\u003c\/li\u003e\n  \u003cli\u003eRaspberry Pi 3 Model B \/ B+\u003c\/li\u003e\n  \u003cli\u003eRaspberry Pi 2 Model B\u003c\/li\u003e\n  \u003cli\u003eRaspberry Pi 1 Model B \/ A \/ A+\u003c\/li\u003e\n  \u003cli\u003eOther compatible mini PC boards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\n\u003ch4\u003eQ: Are these copper heatsinks compatible with Raspberry Pi 4?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This copper heatsink kit is fully compatible with the Raspberry Pi 4 Model B, as well as Raspberry Pi 3, 2, and 1 in their various Model A and Model B configurations. It covers the processor, RAM, and LAN chip for comprehensive thermal management.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do these Raspberry Pi heatsinks require thermal paste or glue?\u003c\/h4\u003e\n\u003cp\u003eA: No additional thermal paste or adhesive is needed. Each copper heatsink comes with a pre-applied thermal adhesive pad on the base, allowing for quick and clean installation directly onto your Raspberry Pi's chips.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Will these heatsinks fit inside a standard Raspberry Pi case?\u003c\/h4\u003e\n\u003cp\u003eA: These heatsinks feature a low-profile design that is compatible with most standard Raspberry Pi enclosures. However, we recommend checking the internal clearance of your specific case before installation, as some ultra-slim cases may have limited space.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Why choose copper heatsinks over aluminum for Raspberry Pi?\u003c\/h4\u003e\n\u003cp\u003eA: Copper has a significantly higher thermal conductivity than aluminum, meaning it transfers heat away from your components more efficiently. This makes copper heatsinks an excellent choice for overclocked Raspberry Pi builds or projects that run demanding workloads over extended periods.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Are these copper heatsinks compatible with Raspberry Pi 4?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! This copper heatsink kit is fully compatible with the Raspberry Pi 4 Model B, as well as Raspberry Pi 3, 2, and 1 in their various Model A and Model B configurations. It covers the processor, RAM, and LAN chip for comprehensive thermal management.\"}}, {\"@type\": \"Question\", \"name\": \"Do these Raspberry Pi heatsinks require thermal paste or glue?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No additional thermal paste or adhesive is needed. 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For C\/C++, use the official Raspberry Pi Pico SDK with your preferred toolchain.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the difference between the Raspberry Pi Pico W and Pico H?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Both the Pico W and Pico H feature the same RP2040 processor and built-in 2.4 GHz WiFi. 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