Someone found a workaround - check out this github here: https://github.com/pycom/pycom-micropython-sigfox/issues/424

Hello @Paul-Thornton , Glad to here that, it's very important to me to have this possibility with Pycom. All my devices should be connected to Azure. I've done some researching and found out that your MQTT libs are sending bytes that Azure doesn't understand. Short description of this is on the link: https://www.youtube.com/watch?v=pRqpKZ7mO1s

What is the interest level in an MP implementation? There are many things to be taken care of besides just the Hub connection (DPS, Twin, etc).

@seb Can you please help me. I'm trying exactly the same thing, connecting Pycom to IoT-Hub using MQTTClient. Only thing that is different is that I'm using pregenerated password. All my credentials and password is ok, because I've tested it with MQTT Client Desktop App (MQTT.fx) and everything is working fine. When I call client.connect() I'm receiving following error line: Traceback (most recent call last): File "main.py", line 40, in <module> File "/flash/lib/mqtt.py", line 84, in connect IndexError: bytes index out of range Firmware version is: Pycom MicroPython 1.18.1.r1 [v1.8.6-849-b0520f1] on 2018-08-29; LoPy4 with ESP32 Thank you in advance.

Hi @jancb, please try the example on our GitHub repo - https://github.com/pycom/pycom-libraries/tree/master/examples/mqtt - I need to update the docs as they are out of date! Thanks!