Adafruit STEMMA Soil Sensor - I2C Capacitive Moisture Sensor
The Adafruit STEMMA Soil Sensor uses capacitive measurement to detect soil moisture — a more durable approach than resistive sensors that corrode over time. With a single probe and no exposed metal, it avoids oxidation issues and won't introduce DC currents into your plants.
The ATSAMD10 microcontroller provides capacitive touch readings ranging from approximately 200 (very dry) to 2000 (very wet), plus an ambient temperature reading (±2 °C). Connect via a 4-pin JST-PH STEMMA cable to any 3–5V microcontroller over I2C — no soldering required.
Key Features
- Capacitive Moisture Sensing – No exposed metal, no corrosion, no DC current in soil
- Moisture Range – ~200 (very dry) to ~2000 (very wet)
- Temperature Sensor – Built-in ambient reading (±2 °C)
- I2C Interface – 4-pin JST-PH STEMMA connector for plug-and-play wiring
- 3–5V Compatible – Works with any microcontroller or single-board computer
- ATSAMD10 Chip – Onboard microcontroller handles all measurements
Ideal For
- Automated plant watering systems
- Garden and greenhouse monitoring
- Soil moisture data logging
- Educational science projects
Package Contents
- 1× STEMMA Soil Sensor board
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Adafruit STEMMA Soil Sensor uses capacitive measurement to detect soil moisture — a more durable approach than resistive sensors that corrode over time. With a single probe and no exposed metal, it avoids oxidation issues and won't introduce DC currents into your plants.
The ATSAMD10 microcontroller provides capacitive touch readings ranging from approximately 200 (very dry) to 2000 (very wet), plus an ambient temperature reading (±2 °C). Connect via a 4-pin JST-PH STEMMA cable to any 3–5V microcontroller over I2C — no soldering required.
Key Features
- Capacitive Moisture Sensing – No exposed metal, no corrosion, no DC current in soil
- Moisture Range – ~200 (very dry) to ~2000 (very wet)
- Temperature Sensor – Built-in ambient reading (±2 °C)
- I2C Interface – 4-pin JST-PH STEMMA connector for plug-and-play wiring
- 3–5V Compatible – Works with any microcontroller or single-board computer
- ATSAMD10 Chip – Onboard microcontroller handles all measurements
Ideal For
- Automated plant watering systems
- Garden and greenhouse monitoring
- Soil moisture data logging
- Educational science projects
Package Contents
- 1× STEMMA Soil Sensor board
