The soil moisture sensor module , built around the LM393 comparator, gives an active-low (L) level output when the soil is dry (determined by a pre-setted threshold value). This digital output (wet ...

However, I used the official Arduino Starter Kit ($100), which includes everything I needed, minus the nuts, bolts, wires, and ring terminals for making the soil probes. Wiring the Hardware. Plant ...

This is a simple arduino project for a soil moisture sensor that will light up a LED at a certain moisture level. It uses Arduino Duemilanove microcontroller board. Two wires placed in the soil pot ...