Has anybody been able to use MQTT library with Argon?

[Bear]

I have not, but you could try flashing the test client that I posted recently to the Argon. You don't need to make any changes to the code. Just flash and go to the Particle Console where you can enter the broker's IP address (or DNS name), a topic and message to publish and/or a topic to subscribe to.

MQTT "Test Client"

I’ve been experimenting with Home Assistant for the past few weeks, and I wanted to use MQTT to publish data from some of my Particle devices. Having never used MQTT before, and being new to Home Assistant, I decided that I needed to configure Home Assistant with test data. That led to the development of the code listed below. I compiled and flashed the code to my Photon, and I now have an easy way to publish and subscribe to any MQTT broker via the Particle Console as seen in the following scr…