Ultrasonic gesture based TV remote control     This is a fairly simple project that is designed to introduce key components to a new Arduino user. I created this in a few hours of tinkering using existing Arduino libraries and a SainSmart starter kit. Real world applications could include users who have difficulty using remote controls or are in food preparation areas etc. The IR code is configured for use with a Sony TV, the library is courtesy of http://www.righto.com/2009/08/multi-protocol-infrared-remote-library.htmlI...