Ok, software done; on to the relay controller box! [danman]’s sprinkler system has four 12V AC valves that need wrangling, and no data cables, necessitating the wireless setup. Initially ...

Smart sprinkler controllers aim to address those pain points ... Instead, they have a WiFi connection that allows them to use weather data from the internet to determine watering schedules.

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 ...