Some MIT students with too much free time built a USB controlled disco dance floor for their dorm lounge. It was built in a week, has 1536 LEDs, 20,000 hand-soldered connections, and is capable of displaying 12-bit color. Click here for videos and photos. An excerpt from their FAQ:
How much did it cost?
Too much. Fortunately, we were funded by many generous sources. The total came to around $2,500. Thanks to the economies of scale, larger floor could probably be built for not much more, although a smaller floor would probably cost about as much.
How do I build my own dance floor?
First, get a few dozen engineering students living in the same place. Add pizza, coffee, and music. Shake vigorously.
Seriously, though… we designed our floor to be very, very cheap to build. However, the tradeoff was that it required lots and lots of skilled labor. If you have a few dozen people around that know how to solder, wire stuff up, code, etc, you can do it too. We don’t have the time to publish a full HOWTO, but if you’re really serious about it, feel free to email us with any questions.
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