(502) New (better) Soil Moisture Sensors and RS485 Modbus on ESP32 Arduino

Soil moisture sensors are essential for successful working with plants. In video #207, I showed some of the most common sensors. Some of them were bad, and some were ok. In the meantime, I discovered a new sensor type that promises accuracy and more data. These sensors are also waterproof and can be buried. So, let’s check them out. We will also learn about the RS485 and Modbus interface and how to connect such sensors to MQTT and Home Assistant.

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Links:
RS485 to TTL adapters: https://s.click.aliexpress.com/e/_oFVaPgu or https://amzn.to/4inbKZd
5V to 3.3V converters: https://s.click.aliexpress.com/e/_onTc9Qy
ComWinTop soil sensors: https://s.click.aliexpress.com/e/_ooZXRWM
Halisense soil sensors: https://s.click.aliexpress.com/e/_ooZXRWM
NPK soil sensor: https://amzn.to/42TAl2Y or https://amzn.to/3D1hBnH

GitHub: https://github.com/SensorsIot/Humidity-Sensors

Additional data about these sensors: https://github.com/kromadg/soil-sensor

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