Using the M5Dial_WiFi_MQTT_UIFlow2.0.1 example from @felmue I can get it to work, but if I change the subscribe block to display the MQTT message, or to set a variable to get message(return bytes), I get the following error:

File "umqtt/simple.py", line 114, in connect
MQTTException: 2

Can anyone help?

Further info: I have found that this is actually from the broker side. If I restart the broker, it will connect fine, until I power cycle, or reset. The second connection fails.

Solution: I ended up changing libraries to PicoMQTT and was able to get everything working.

M5Dial_WiFi_MQTT_UIFlow2.0

Thank you all very much
@felmue your example worked perfectly, i really appreciate it

please find my M5Dial MQTT (subscribe and publish) example called M5Dial_WiFi_MQTT_UIFlow2.0.1 in the UIFlow2 Play Zone.

BTW: MQTT apply for messaging (e.g. mqtt_client.wait_msg() block is a blocking call, e.g. it waits until a message is received. If you only want to check for new messages (non blocking) you'll need to use an Execute mpy code block with mqtt_client.check_msg() in it.

Thanks
Felix

Thank you for the quick replies, i think i managed to make it work, it seemed to be an issue with WIFI
now i can publish messages everytime i rotart the dial, but the new issue i'm having is receiving messages (or in other words Subscribing)
below is a sample bock code, i would receive one message then it stops receiving.
do you know the block "MQTT Apply For Messages" what is it used for? if i add it i would receive one message, i tried adding in the subscribe blocky but then i cant publish, any idea what i'm doing wrong?

are you publishing and subscribing to same topic or two different so something else is acting for topic you subscribing?

The error says the host is unreachable, are you sure you have the correct address?

add wifi config to your code too