As the soil dries out, the sensor value rises; when it reaches 900, the LED will light and the buzzer will sound. The sketch first defines Arduino pin A0 so that it reads the moisture sensor value. It ...

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 ...

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 ...