A remote garage door opener using a Raspberry Pi. Through the use of an optocoupler circuit, it allows this system to be installed in a rental unit as it does not require any direct modification of the garage door opener itself.
(image: rpigarage.jpg width:100%)
Check out how to get your own going at this (link: http://www.instructables.com/id/RPi-Garage-Door-Opener-for-Rentals/ text: instructables link popup: yes).
Collaborated with jared