Here's my garage door project, that I've integrated into Home Assistant: https://github.com/craftyguy/esp-garage https://github.com/craftyguy/esp-garage I use

Here's my garage door project, that I've integrated into Home Assistant: https://github.com/craftyguy/esp-garage https://github.com/craftyguy/esp-garage I use an ultrasonic sensor to detect when the door is open or closed. It's very reliable. I even wired up Home Assistant to contact me (over sms by sending an email to my number@carrier) if the door has been open for >5 minutes, because I was precisely in your position of forgetting to close it.