We used to have a gas-powered central heating system that had no external
controls other than radiator valves. It had a sun-exposed exterior
temperature sensor on the west side of the house that caused it to refuse to
heat in the evening.
I wanted to fix the issue and control it via Home Assistant, and since only the
newer models had bus control, I resorted to manipulate the outside sensor
readings and designed a man-in-the-middle device.
