Happily there is a solution in the form of capacitive sensor probes ... This can be measured to gain a reading of the soil moisture level. The probe is fitted with a 3.3 V LDO regulator, which ...

That’s what [Modest Maker] did and the resulting findings along with an attempt to beat the commercial system with some cheap capacitive sensors, are covered in a recent video that’s also ...

namely a capacitive moisture sensor. Again, you’ll need to interface the sensor with your ESP32 board before connecting the ...