Just checking in to see who's using their Arduino and MQTT to ignition. I had an Arduino UNO lying around with an Ethernet board so figured I would get it talking with MQTT.
I am trying to use the ArduinoMqttClient library, it gets to ignition and then I get connection refused. I am using username/password and the chariot broker.
Just curious if you are using an Arduino, what library did you use and how is it working for you?