Looking to set up araspberry pi and several arduino that are hooked up to power relays. Any recommendations on howi would get the RPI to interact with the arduino over wifi so that I can read the state of the relays as well as tell the select arduino to turn the relays on. Or off?
Thanks
Have you looked up the ESP8266 boards?
If all you want is a single relay controlled over WiFi then most likely you can just use one of the ESP8266 boards stand-alone without needing any arduino.
If you have more complex requirements you can hook your arduino up to an ESP8266 via serial, there's lots of examples.