[Video Link] This Weekend Project from MAKE is really cool: a touchless 3D tracking interface made from foil and cardboard.
Using a combination of low- and high-tech components, we'll show you how to build a completely touchless 3D tracking interface. This project will introduce you to the principle of capacitive sensing, and the Arduino microcontroller.
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. Come and hear Mark speak at the ALA conference in Chicago on July 1.