{"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. Designed as a direct Pro Micro-compatible alternative, it works seamlessly with virtually any Pro Micro keyboard layout and is fully compatible with the popular Nice!Nano V2.0 pinout. 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. 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 SuperMini NRF52840 board compatible with ZMK firmware for wireless keyboards?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes, the SuperMini NRF52840 development board is compatible with ZMK firmware, which is a popular open-source keyboard firmware designed for wireless keyboards. 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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","url":"https:\/\/quakegoods.com\/products\/nrf52840-supermini-development-board-bluetooth-5-nicenano-compatible","provider":"Quake","version":"1.0","type":"link"}