Gravity Analogue Soil Moisture Sensor for Arduino

The Gravity Analogue Soil Moisture Sensor for Arduino is a reliable module designed to measure the water content in soil, making it a perfect tool for gardeners, hobbyists, and IoT agriculture projects. By inserting its two probes into the soil, the sensor passes a current and measures the resulting resistance to determine moisture levels. More water allows soil to conduct electricity more easily, providing a higher output signal, while dry soil results in lower conductivity and a weaker signal. This precise analogue feedback allows for accurate monitoring of your plants' hydration needs.

Featuring a convenient Gravity Interface, this sensor is designed for plug-and-play simplicity, eliminating complex wiring and making it incredibly easy to connect to your Arduino or compatible microcontroller. The sensor is protected by Electroless Nickel Immersion Gold (ENIG) plating on its contacts, which provides excellent resistance to oxidation and ensures long-term reliability and stable readings, even in damp environments.

Applications & Use Cases

This sensor is a must-have component for creating smart gardens and automated agriculture systems. It is ideal for reminding you to water indoor houseplants, monitoring the soil moisture in outdoor garden beds, or integrating into a larger IoT network for remote data collection and automated irrigation control. Its compact size allows it to be discreetly placed in plant pots or garden soil.

Key Specifications & Features

• Interface: Gravity series plug-and-play connector for easy use with Arduino.
• Power Supply: Compatible with 3.3V or 5.5V DC.
• Output Signal: Provides an analogue voltage signal ranging from 0 to 4.2V.
• Current Consumption: 35mA during operation.
• Pin Definitions: Simple three-wire connection: blue (analogue output), black (ground/GND), red (power/VCC).
• Protection: ENIG plating.