Capacitive soil moisture sensor V2.0

Overview

A capacitive soil moisture sensor — unlike resistive versions, it doesn't have exposed metal in contact with the soil, so it resists corrosion over long-term use.

Key Specs

Pinout

VCC, GND, AOUT (analog output)

Features

• No exposed metal contacts — resists corrosion much better than resistive soil sensors
• Simple analog output

Compatible With

Arduino, ESP32, ESP8266, Raspberry Pi (via ADC)

Use Cases

• Plant watering automation
• Garden and greenhouse monitoring

FAQ

Why capacitive instead of resistive? Capacitive sensors don't corrode from prolonged soil contact the way exposed-metal resistive sensors do.