If anybody is interested in playing around with the Arduino I recommend this kit. It comes with a 30-lesson PDF file with description of what you are doing - very informative. Over 6,000 kits sold. http://www.ebay.com/itm/221451495178?_trksid=p2060353.m2749.l2649&ssPageName=STRK:MEBIDX:IT PS ..... I'm up to lesson 15.