MWRC 2012 CI Server / Hardware hacking workshop
So... you want to connect lights and sounds to your CI server and don't want to have to do it through a computer?
You're in luck.
Contained in this repo are source files: 1 for Arduino and a folder with a simple sinatra app, as well as a presentation and a PDF printed version of Sparkfun's assembly instructions.
The sinatra app represents a server and a protocol that represents an arbitrary remote server.
The arduino connects to the remote server and gets the status. Depending on the status, it lights up a corresponding light.