An arduino sketch to control a garage door though a web interface. The garage door is controlled through a relay and two hall effect sensors detect whether the door is open or closed. An RGB LED is used to indicate the door state.
The sketch was tested on an EtherTen and an EtherMega. It should also work with an Arduino Ethernet shield.
This sketch uses the Webduino library to respond to HTTP requests.
Details on the hardware are available in an associated article.