This piece consists of four tilt-sensitive hollow wooden blocks with speakers inside. Depending on how the block is tilted (i.e. what side it is resting on) a different note is played. Eash cube has three notes and silence mapped to four of the sides, the remaining two sides are not detected currently.
It was constructed with hand made red oak blocks equipped with 2 axis photointerrupter tilt sensors, and surplus PC speakers. The system was controlled using with Max/MSP with 4 channel audio output which was amplified to drive the speakers. The tilt sensors were read into a basic stamp and output to Max/MSP over a rs-232 connection.