Allow me some time to test it, maybe I will amend something

Yes of course. I have made it initially for beta version.
I can't test alpha or edge for now.

keep this on hold for the moment - I guess the new external mqtt feature will change again soon

On the bigger scale, I think this PR includes 2 mutually exclusive approaches to MQTT:

• @docgalaxyblock's mqtt bridge mosquito config, mirrors same data that is available to web app
• new @ClemensElflein commit (ClemensElflein/open_mower_ros@199d372), dedicated ROS node that sends data directly from ROS to HA, without mosquitto.

I think when you using ROS node, you don't need mosquitto changes. Testing it now

Yes, I'm still on beta version of openmower. So I need mqtt bridge.
For the future version, we need to update this tuto.
Or made another one
I don't know how update to a newer version

Sure we have two methods now.

But the problem is that the ROS node currently lacks the openmower/ prefix and therefore the current HA config only works with my bridge.

The best option would be a configurable prefix (eg: OM_MQTT_TOPIC_PREFIX=openmower) in the mower_config.txt