A simple breakout board for measuring moisture in soil and similar materials. The two large exposed pads act as probes — functioning as a variable resistor where higher moisture means better conductivity, lower resistance, and a higher signal output. This version includes a 3-pin screw terminal pre-soldered for easy wiring.

Connect VCC and GND to any Arduino-compatible board and read the analogue SIG output to determine moisture level. The PCB features a gold ENIG finish for improved corrosion resistance in moist environments.

Key Features

• Analogue Output – Signal level proportional to soil moisture content
• Screw Terminals – 3-pin terminal block pre-soldered for tool-free wiring
• ENIG Gold Finish – Electroless Nickel Immersion Gold for corrosion resistance
• Simple Interface – Just VCC, GND, and SIG — works with any analogue input

Ideal For

• Automated plant watering systems
• Garden and greenhouse monitoring
• Soil science experiments
• Environmental data logging

Resources

• Hookup Guide – Assembly, weatherproofing, and example project