Raspberry Turk
The Raspberry Turk is a robot that can play chess—it's entirely open source, based on Raspberry Pi, and inspired by the 18th century chess playing machine, the Mechanical Turk.
At the moment the AI backend to the Raspberry Turk is Stockfish–considered the strongest open source chess engine in the world. It is allowed one second to think about its move–so yes, it will almost certainly beat you.
Eventually I would like to build my own chess engine for the project, when I have more time.