Rigid USB Dance Pad
Assembly instructions are available in The Construction of a Rigid Dance Pad Using Common Materials. Excerpts from this guide were featured in the August 2007 edition of PCFormat Magazine. This design proved to be quite robust, but not very economical. It turns out that wood and plexiglass are relatively expensive when purchased in small quantities. The button design functioned adequately with aluminum foil contacts, but conventional solder did not adhere well. The problem was remedied with small screws that acted as binding posts for the wires that were connected to the USB control circuit. The screws had rounded heads so as not to interfere with gameplay and to avoid safety issues if playing in bare feet.
This project was never intended to be anything but a research/amusement platform, so the design was purely functional.