ITP student Tak Cheung casted this boat hull from fiberglass and epoxy resin and embedded a tilt responsive LED matrix within it. From his site:
This project visualizes the dynamic movement of water through a grid of LEDs and translates the amplitude of sound into simulated gusts of wind. A LED matrix is connected to an accelerometer to detect a level datum in the hopes of simulating a boat floating in water. It is attached to a rounded base with embedded earth magnets that is pulled by electromagnets. These magnets are controlled by 4 mic sensors measuring the amplitude of sound. In a sense it’s a boat traveling in a sea of light, propelled by the amplitude of sound.
[vimeo http://www.vimeo.com/38696764 w=600&h=338]