About this item

The Adafruit STEMMA Soil Sensor (Product ID: 4026) is a capacitive moisture sensor designed for accurate soil hydration monitoring. Unlike traditional resistive sensors that can oxidize over time, this sensor utilizes a capacitive measurement system integrated into the ATSAMD10 microcontroller, providing stable readings without exposed metal parts. It offers moisture readings ranging from 200 (very dry) to 2000 (very wet) and includes an ambient temperature sensor with an accuracy of ±2°C. The sensor communicates via I2C, ensuring compatibility with various microcontrollers and single-board computers. It features a 4-pin JST-PH connector for easy integration, requiring no soldering. Ideal for plant care projects, it supports both Arduino and CircuitPython environments, making it accessible for beginners and experienced developers alike.