Does MQTT work already

I use MQTT a lot with other Shelly devices. But so far i could not get the wall display working with my MQTT Broker. I hope there is soon an update coming. Hopefully together with the option to use the wally display as a thermostate/sensor.

Edit by 66er:

Unnecessary full quote removed. Please refrain. You can tagg a user with an "@"

Hi, i send you the diagnostics file. There you can see my complete setup.

By the way, so far it is not possible to assign a group to a button. You can assign a single device (lightbulb) to a button, but no way to assign a group.

Kind regards,

Martin

In the log file I get the MQTT error:

[2023-09-14 14:19:05.278] [MQTT:DISCONNECT]: Disconnected

[2023-09-14 14:19:05.280] MQTT disconnected!

[2023-09-14 14:19:05.299] [MQTT:CONNECT]: Connection failed: CONNECT failed as CONNACK contained an Error Code: UNSUPPORTED_PROTOCOL_VERSION.

[2023-09-14 14:19:05.301] MQTT connection failed: CONNECT failed as CONNACK contained an Error Code: UNSUPPORTED_PROTOCOL_VERSION.

If you the further google for UNSUPPORTED_PROTOCOL_VERSION you will find that your broker ist using MQTT 3, which has a 2 byte CONNACK versa the MQTT 5 having a 3 byte CONNACK. Now the bad thing is, that the wall display seems to be the first and only shelly device not supporting MQTT 3.

Let's hope they will add MQTT 3 support, since this is a very wide spreaded version. There is probably not a good reason having on device which is different than all the others.

When you use a MQTT 5 broker everything seems to work (eg. test.mosquitto.org). However i found missing state messages and event messages