There were certainly a couple whiz kids at Intel's International Science and Engineering Fair this year, but high school senior John Hinckel's a regular MacGyver: he built a wheelchair remote control out of a couple sheets of transparent plastic, four sliding furniture rails and some string. A Nintendo Wiimote goes in your hat and tells the whole system what to do -- simply tilt your head in any direction, and accelerometer readings are sent over Bluetooth. The receiving laptop activates microcontrollers, directing servo motors to pull the strings, and acrylic g
