MQTT las value persists on the HA's dasboard even when the publisher goes offline

Configuration Frontend
,
1

Hi.
I’ve just installed an MQTT Mosquitto broker on the same Raspberry PI that hosts HA.
I’ve defined an external ESP32 configured as an MQTT publisher that sends a simple test dataset every ten seconds to the Mosquitto broker.
Finally I’ve added this code to the configuration.yaml :

# Example configuration.yaml entry
mqtt:
  sensor:
    - name: "ESP32-pin 25-Volts"  
      state_topic: "studio/test/pin25"
      unit_of_measurement: "Volts"
      payload_available: "online"
      payload_not_available: "offline"
      force_update: true

The issue is that even if I shutdwon the external ESP32 board on the HA’s dashboard I see the last value sended while I’d like to show that the board is offline.
2022-12-19_094002

Any idea?

2

Retain is probably set to true (true is the default) on your ESPHome board.

  • retain (Optional, boolean): If the published message should have a retain flag on or not. Defaults to true.
3

expire_after should solve your problem

1 Like
4

It works fine.
Thanks

1 Like