Alternative to Zehnder ComfoAir Q controller

Added automatic detection of the board which maps the pins automatically.

New packaging for the bridge, more compact and wall mounted

existing complex firmware works perfectly on another non LCD ESP32 S3 device with CAN transceiver integrated ! Only change needed are the pins<->GPIO mappings. Future version should include auto board detection.

couple of pictures with new enclosure

I was getting tired of running  up and down to the attic or debug in the attic itself so I've implemented a serial output OTA display

Added boost feature and display of remaining time

Fixed few bugs and installed 2 devices with same firmware: one in bridge mode and one in remote mode. Home Assistant integration successful

Sniffing the time CAN commands was fairly difficult but it works now: the time of the MVHR can now be synced on a regular basis with NTP servers.

This is useful since the time on the device tends to deviate quickly

This mode can be enabled in secrets.h. When set to true, the device is no longer a MQTT bridge but requires another MQTT bridge and MQTT broker. Check this repo for implementation of the bridge :https://github.com/dardhal/comfoair-esp32. 

I will also publish my own version in a single board which can be hooked up via the RJ45 port directly but here's a preview in the meantime

The benefit of this mode is the display doesn't have to be hooked up to the Comfonet and can be installed anywhere in the house, as a secondary controller.

The diagram below illustrates the architecture in the two different modes