OpenSprinkler › Forums › Comments, Suggestions, Requests › Opensprinkler on ESP8266 › Reply To: Opensprinkler on ESP8266 June 5, 2017 at 2:42 am #46556 komoyaParticipant @pbecchi thank you for your great work.i want to have a try. Maybe i am a new learner. but how to set the pin.h or config.h file to work with only ESP8266? how to define the MCU?