Interested in reading more, can you mention the textbook(s) your course uses?

I use this: https://www.thesmartesthouse.com/products/diy-smart-garage-opener-kit-zooz-multirelay-ecolink-tilt-sensor

It’s a bit finicky. If I open the door through home assistant, it prevents me from operating the door through the manual opener until I click twice. Otherwise, local opener has no power. Not sure if I installed it incorrectly.

But it works fine, otherwise.

Being alive is a red flag.