Aluminum foil (1)
Masking tape (1)
Computer with Processing and Arduino software installed (1)
Shielded cable, cut off the ends, cut into (3) 2' lengths (1) from RadioShack.
Arduino (1) from RadioShack.
10KΩ resistors (3) from RadioShack.
220KΩ resistors (3) from RadioShack.
Alligator clips (3) from RadioShack.
pieces of cardboard (3)
Main circuit: (left side to the Arduino and right side to each of the three foil plates.)
Software download links:
More information at: http://makezine.com/projects/a-touchless-3d-tracking-interface/