GOAL: Have HE subscribe to and respond to postings on my MQTT server, particularly motion events from Blue Iris
I have the MQTT Mosquitto broker working and BI posts to it fine, and I also have the MQTT bridge installed as described here, but I cannot get HE to subscribe to any events or appear to even see the broker.
Is what I am trying to do possible at this point? What am I missing?
You need to create a virtual device in HE and then map the topic that BL is using to that. nodeRED can do this for you.
Hubitat uses a real (ST) kludge for MQTT support, it needs TLC from Hubitat themselves but so far none. Itβs not a good MQTT bedfellow at the moment.