Hurray! One of those EzControl XS1 plus some sensors and actors is on the way to me. So I can finally start the little holiday project which will be called “HACS” (Home Automation Control Server).
The source code and documentation repository is up on GitHub as of now – you can access it here: https://github.com/bietiekay/hacs
If you are interested in working on that project – drop a comment.