Interesting. I went to enable UART debugging this morning, but decided to double-check before doing so, and the value is updating in HA now. I did reboot my HA server last night after an update, maybe it was just a display issue? Not sure, but it’s working now.
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Yeah, so I took a look at the readme, and while it is certainly concise and well-noted, it references making use of 7 pins - but unless I’ve missed something in this thread, the only wiring diagrams I’ve seen show 6 wires being used. In fact, your code shows to use 7 pins, but that doesn’t leave 2 pins available for power and ground, so now I’m doubly confused! A complete mapping of the RJ45 end would be really appreciated. I’m al electronics n00b - there’s a reason I did this without soldering. 
Thanks!
This uses the same wires, but it puts the ESP in the middle. So instead of tapping into the wire that connects the display and the controller and the ESP on one pin, now the display connects to the ESP on one pin and the controller connects to the ESP on another pin. The wire doesn’t connect from the display to the controller. @Mahko_Mahko if you understand what I’ve done, can you make an updated diagram with the changes?
I’ll see if I can do some doc refreshers and testing over the xmas break. Might make some doc pull requests etc.
Probably there’s a few areas to tidy up and a few feature requests to raise (such as implementing the memory presets in your component).
Testing has been complicated on my side a little by the fact that I use a more customised solution since I also built my own control panel. But I’m probably due to review it all anyway.
I’m pretty sure I still have my original “simple diy dongle” I can try to rewire and keep as a basic test device but I’ll need to put aside a little time. I’ll ping you on Discord to work through anything.