in Local MQTT
I wonder about the choice of MQTT for local access. It has the disadvantage of excluding anyone without a MQTT server.
Might it not be more useful to provide an API - or even a very simple http(s) interface? That way, anyone with access to the local network could query the CAD. An Android/iPhone App could be developed - maybe by a third party.
The ideal would of course be both facilities; but doubtless the CAD is short on program memory.
I'd be interested in others' views..
Installing a MQTT broker is trivial. It's also a lot easier to get the data you want than an API.
Most people who would be buying these would be feeding into some form of home automation system using MQTT. If you have a smart meter you can access the data using the Bright app so you don't need the the IHD/CAD to access that.