This Arduino Get Started guide shows you how to set up a capacitive soil moisture sensor with an Arduino. Like many Arduino sensors, soil moisture detectors only have three pins: GND, VIN, and data.

I can check that annually and probably be fine. Soil moisture, though, is something that requires more active control. My long term goal is to integrate the sensors and some control relays for ...

This is quite simply a BLE (Bluetooth Low Energy) gateway that intermittently reads data – soil moisture level, ambient temperature, humidity and light level – from up to 25 Soil+ sensors.

Ever wanted to measure soil moisture? Common “soil moisture meter module arduino raspberry compatible free shipping” PCBs might deceive you with their ascetic looks.