So now that I had a Home-Assistant (HA) setup working, an esp8266 booting and that I can write software for, it was time to start making the two talk to each other and make something that can become unseful based on all this.

The choice went to the simplest element …

As I talked about in previous posts, I got some ESP8266 devices I wanted to play with, one has been setup on a breadboard for testing for a while, able to boot, but never got to try anything more on it yet.

Protocol and firmware base choice

As my goal …