OpenSprinkler › Forums › Third-Party Software › Adding to the list of Station Types › Reply To: Adding to the list of Station Types May 31, 2023 at 3:30 pm #75900 RayKeymaster Are you trying to do this for ESP8266 or Rasbperry Pi? OpenSprinkler 3.x which is based on ESP8266, already support PCA9555/PCA9535, which is an I2C expander similar to MCP23017 but cheaper.
