If only Dorothy & Toto had this Find Home Detector....

This gives new meaning to follow the light...literally! The Find Home Detector is used to find the designers' way home, using an LED compass as the path to follow.  The device uses a LilyPad, GPS, an actual compass and some LEDs. Using the GPS to get a position and then calculate the direction to the location of the home. The compass is then used to get their heading so it is possible to indicate the direction to travel. See the full post & video at http://www.slickstreamer.info/2011_02_01_archive.html

Love the environmentally friendly design diagram