The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...

My soil-moisture reading was in the low 700s in soil that had around 30 percent moisture (according to a comparison with a commercial soil-moisture sensor), and 661 in a drier pot.

Posted in Science Tagged IoT, IoUT, LoRa, soil moisture sensor. ... Personally, I like the use of an ATMega328P here, because it’s the base of the Arduino Uno and readily available.