{"product_id":"soil-moisture-sensor-hygrometer-module-arduino-diy-kit","title":"Soil Moisture Sensor Hygrometer Module – Arduino DIY Kit","description":"\n\u003ch2\u003eSoil Moisture Sensor Hygrometer Detection Module – Arduino DIY Kit\u003c\/h2\u003e\n\u003cp\u003eTake the guesswork out of plant care with this \u003cstrong\u003eSoil Moisture Sensor Hygrometer Detection Module\u003c\/strong\u003e — the perfect component for hobbyists, students, and makers building Arduino-based automatic watering systems or smart garden projects. This compact, easy-to-use module detects the water content in soil and outputs a readable signal so your microcontroller always knows when it's time to water.\u003c\/p\u003e\n\n\u003ch3\u003eWhy You'll Love This Module\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccurate Moisture Detection:\u003c\/strong\u003e The dual-probe sensor measures soil conductivity to deliver reliable, real-time moisture readings for smarter automated irrigation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArduino Compatible:\u003c\/strong\u003e Plug-and-play with Arduino Uno, Nano, Mega, and most other popular microcontroller boards — no complex wiring required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalog \u0026amp; Digital Output:\u003c\/strong\u003e Both AO (analog) and DO (digital) output pins let you choose threshold-based switching or precise variable readings depending on your project needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOnboard Indicator LEDs:\u003c\/strong\u003e Built-in power and signal LEDs give you instant visual feedback during testing and setup.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY Kit Friendly:\u003c\/strong\u003e Ideal for STEM education, school projects, maker labs, and home automation enthusiasts looking to build their own smart watering system.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Durable:\u003c\/strong\u003e Lightweight design makes it easy to integrate into any enclosure, breadboard setup, or permanent installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3.3V – 5V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Type:\u003c\/strong\u003e Analog (AO) \u0026amp; Digital (DO)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOnboard Comparator:\u003c\/strong\u003e LM393 for stable digital output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e 4-pin connector (VCC, GND, AO, DO)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Platforms:\u003c\/strong\u003e Arduino, Raspberry Pi, ESP8266, ESP32, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Hello STEM\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 Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Soil Moisture Sensor Probe\u003c\/li\u003e\n  \u003cli\u003e1 × Comparator Control Module (LM393)\u003c\/li\u003e\n  \u003cli\u003eConnecting wires\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino automatic plant watering projects\u003c\/li\u003e\n  \u003cli\u003eSmart garden \u0026amp; greenhouse automation\u003c\/li\u003e\n  \u003cli\u003eSTEM classroom experiments and DIY electronics kits\u003c\/li\u003e\n  \u003cli\u003eHome IoT (Internet of Things) builds\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 this soil moisture sensor module compatible with Arduino boards?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This soil moisture sensor hygrometer module is fully compatible with Arduino Uno, Nano, Mega, and most other Arduino-based microcontroller boards, as well as Raspberry Pi, ESP8266, and ESP32 platforms. It operates on 3.3V–5V, making it universally versatile for DIY electronics projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between the analog (AO) and digital (DO) outputs on this module?\u003c\/h4\u003e\n\u003cp\u003eA: The \u003cstrong\u003eanalog output (AO)\u003c\/strong\u003e provides a variable voltage signal that corresponds to the exact moisture level in the soil, allowing your Arduino sketch to read a range of values. The \u003cstrong\u003edigital output (DO)\u003c\/strong\u003e uses the onboard LM393 comparator to output a simple HIGH\/LOW signal based on a threshold you set with the onboard potentiometer — ideal for triggering automatic watering when the soil drops below a set dryness level.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this module to build an automatic plant watering system?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely! This sensor module is one of the most popular components used in Arduino automatic watering systems. By connecting the module to your Arduino and pairing it with a relay and water pump, you can create a fully automated smart watering system that activates only when the soil moisture level drops below your desired threshold.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I connect this soil moisture sensor to my Arduino?\u003c\/h4\u003e\n\u003cp\u003eA: Connecting is straightforward. The module has 4 pins: VCC (connect to 5V on Arduino), GND (connect to GND), AO (connect to an analog input pin such as A0), and DO (connect to a digital input pin). Power on the module, insert the probe into the soil, and start reading moisture values through your Arduino sketch immediately.\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 soil moisture sensor module compatible with Arduino boards?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! This soil moisture sensor hygrometer module is fully compatible with Arduino Uno, Nano, Mega, and most other Arduino-based microcontroller boards, as well as Raspberry Pi, ESP8266, and ESP32 platforms. 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Power on the module, insert the probe into the soil, and start reading moisture values through your Arduino sketch immediately.\"}}]}\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\": \"Soil Moisture Sensor Hygrometer Module – Arduino DIY Kit\", \"item\": \"https:\/\/0dwbi8-fa.myshopify.com\/products\/soil-moisture-sensor-hygrometer-module-arduino-diy-kit\"}]}\u003c\/script\u003e","brand":"Quake","offers":[{"title":"Default Title","offer_id":50287367749859,"sku":"\u003cnone\u003e","price":36.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0820\/9439\/1523\/files\/Sb8f9270011f045b1a9c7eb5fd5bb232a0.webp?v=1790296145","url":"https:\/\/quakegoods.com\/products\/soil-moisture-sensor-hygrometer-module-arduino-diy-kit","provider":"Quake","version":"1.0","type":"link"}