When ESPHome removed support for custom code files (moving it into external components), my MR24HPB1 presence sensor stopped working as I was using an external library include. I found plenty of support for the HPC1 and the kit you can get with it, but not so much for the HPB1 I have several of. So I made an external component to communicate with this board. I hope it’s of use to someone!
Contributions and issues welcome of course!