OpenSprinkler › Forums › Comments, Suggestions, Requests › Opensprinkler on ESP8266 › Reply To: Opensprinkler on ESP8266
March 18, 2020 at 4:51 am #64714
thanks for this help! I have a PCF8574 at home and connected it to an ESP8266. But I couldnt switch any relays which are connected on the PCF. Attached I have the picture, how it is connected. What I´m doing wrong?