https://arstechnica.com/gadgets/2024/09/i-home-automated-my-garage-door-finally-with-a-ratgdo/

I live in suburbia, which means I've got a garage (or a carhole, if you’re not so fancy). It's a detached garage, so part of my nightly routine when I check to make sure the house is all locked up is to peek out the back window. I like to know the garage door is closed and our cars are tucked in safely.

But actually looking out a window with my stupid analog eyeballs is lame, so I figured I could make things easier by adding some smarts to my garage. The first thing I did was use this fellow’s instructions (the original site is sadly offline, but the Wayback Machine is forever) to cobble together a Raspberry Pi-based solution that would fire off an email every time the garage door opened or closed. I couldn’t remotely open or close the door from inside the house myself (well, I mean, I could with the actual garage door opener remote control), but I could just glance at my inbox to see if the garage door was open or shut in the evenings.