Struggle configuring Sonoff mini using Tasmota through mqtt

@jffz wrote:

I tried to follow the official doc to configure a tasmota (sonoff mini) switch on HA but just nothing happens.

I can see it in the state pages but is displayed as unavailable and I am not able to trigger it. I also don’t see any message in the mqtt topic when I try to trigger it through the states page.

If i trigger it manually everything works just fine and I see messges in the related mqqt topic

Here is my config

# Lights out
- platform: "mqtt"
  name: Lumières extérieur
  state_topic: "stat/sonoff-lights-out/RESULT"
  command_topic: "cmnd/sonoff-lights-out/power"
  availability_topic: "tele/sonoff-lights-out/STATE"
  # availability_topic: "tele/sonoff-lights-out/LWT"
  payload_on: "ON"
  payload_off: "OFF"
  payload_available: "Online"
  payload_not_available: "Offline"
  value_template: "{{ value_json.POWER }}"
  retain: false

I also did tried to configured the mqtt autodiscover through yaml files (only using yaml) but nothing more happens. Any help would be greatly appreciated.

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