We used littleBits instead of the hand crank to animate our dragon. We also changed the cam file to fit the d-shaft on the littleBits dc motor. New files include the updated cam file and a template for lasercutting an acrylic box made to fit littleBits.

littleBits is an open source library of electronic modules that snap together with magnets for prototyping, learning and fun. http://littlebits.cc/