Zero - Arduino Try Out. From the circuit diagram of the module, it is clear that, apart from the module only a few external components are needed to build a relay-driver circuit. ... 16 comments on “ ...

Automatically detects soil moisture and activates the pump when the soil is dry. Smart Irrigation with Overwatering Prevention Uses a state tracking approach to monitor changes in soil moisture (Dry → ...

The Arduino reads this sensor data and compares it to a preset threshold. If the soil is dry, the Arduino activates the relay to switch on the pump. If the soil is sufficiently moist, the pump is ...