# Irrigation with an ESP8266 Tested with D1 mini. Connect a pump with a relais. Relais activation on D4. ## Homeassistant integration payload_on can also contain the duration of the pump in ms. Example: ` switch 5: - platform: mqtt command_topic: greenhousino/pump state_topic: greenhousino/pumpstate payload_on: "on" payload_off: "off" name: "Pumpe" `