The brains of the operation is handled by a Moteino, which is a Arduino compatible micro controller board with WiFi on board. In order to interface with the sprinkler system, an interface PCB is made.

Meross brings smart watering to HomeKit with its new Smart Sprinkler Timer, featuring Siri control, weather-based skips, and ...

My smart sprinkler controller fixed all of this ... I downloaded the device’s app, hooked the new unit up to my guest wifi ...

Ok, software done; on to the relay controller box! [danman]’s sprinkler system has four ... 5V DC power supply for the USB relay board and WiFi router. Once hooked up outside however, the ...

Instead, they have a WiFi connection that allows them to ... we evaluate how easy it is to wire the controller to the sprinkler system’s water valves, whether the controls are simple to use ...