This project is a DIY soil moisture monitoring solution designed for low cost and maximum compatibility with Home Assistant. It's perfect for anyone interested in gardening, agriculture, or home automation and provides real-time soil moisture data to optimize plant care.
- Real-time soil moisture measurement.
- Configurable wet and dry voltage thresholds via a web interface.
- Simple and easy installation process.
The components used for this project are:
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WeMos D1 Mini V4.0.0 (Type-C USB)
Buy on Amazon - Pack of 10. -
Capacitive Soil Moisture Sensor
Buy on Amazon - Pack of 10.
Substitutes may work if they meet the specifications.
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Download the latest
Soil-Moisture-Sensor-Firmware-V#.#.binfile from the releases page. -
Flash the firmware onto your WeMos D1 Mini using the ESPHome Flasher tool.
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Connect the D1 Mini to your sensor following this wiring guide:
- Red (VCC) -> 5V/Vbus on D1 Mini.
- Black (GND) -> GND on D1 Mini.
- Yellow (SIG) -> A0 on D1 Mini.
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Place the soil moisture sensor into the soil near your plant.
Alter the ESPHome yaml file to modify Wi-Fi settings, device name, or update intervals.
After connecting the device to Wi-Fi, access the web interface at http://soil-moisture-sensor-rd.local/ to adjust the sensor's dry and wet threshold values as needed.
Your contributions to this project are welcome! Feel free to report issues, suggest features, or submit pull requests for improvements.
This project is released into the public domain under The Unlicense. For full details, see the LICENSE file.
The source code and documentation for this project were developed with the assistance of ChatGPT.