{"title":"Gravity: Soil Moisture Sensor For Arduino","handle":"gravity-soil-moisture-sensor-for-arduino","url":"/products/gravity-soil-moisture-sensor-for-arduino","description":"A resistive soil moisture sensor that reads the water content of surrounding soil by measuring electrical resistance between its two probes. Wetter soil conducts more easily (lower resistance), while dry soil conducts poorly (higher resistance) — giving you an analogue voltage output proportional to moisture level.\n\nPart of the DFRobot Gravity sensor range, this module features a plug-and-play 3-pin analogue interface and works at both 3.3V and 5V, making it compatible with Arduino, Raspberry Pi, and other microcontrollers. The probes feature an Immersion Gold (ENIG) surface finish for improved oxidation resistance and longer life compared to standard HASL plating.\n\nKey Features\n\n\nGravity Interface – 3-pin analogue connector for plug-and-play wiring\n\n3.3V and 5V Compatible – Works with Arduino, Raspberry Pi, and other boards\n\nAnalogue Output – 0–4.2V output proportional to soil moisture level\n\nImmersion Gold (ENIG) Finish – Superior oxidation resistance for longer probe life\n\nLow Current Draw – Just 35mA\n\n\nIdeal For\n\nAutomated plant watering systems\nGarden and agriculture monitoring\nIoT smart garden projects\nSTEM education and environmental sensing\n\n\nSpecifications\n\n\nPower Supply – 3.3V or 5V\n\nOutput Voltage – 0–4.2V (analogue)\n\nCurrent – 35mA\n\nPin Definition – Analogue output (blue), GND (black), Power (red)\n\nSurface Finish – Immersion Gold (ENIG)\n\nDimensions – 60 × 20 × 5mm\n\n\nPackage Contents\n\n1× Soil Moisture Sensor\n1× Analogue Sensor Cable\n\n\n\nNote: Placing this sensor in very humid soil for extended periods can cause surface erosion. For long-term or wet-soil deployments, consider using a capacitive soil moisture sensor instead, which is more corrosion resistant.\n\n\nResources\n\nProduct Wiki\nSchematic (PDF)\nSample Code\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":9718,"title":"Default Title","sku":"DF-SEN0114","price":4.63,"on_sale":false,"in_stock":true,"available_quantity":1234,"option1":"Default Title"}]}