[youtube=”http://www.youtube.com/watch?v=NU6cSI0GQOY&feature=youtube_gdata”]
Annoy your friends or co-workers with this high-tech practical joke. Get the PDF for this project here: http://blog.makezine.com/archive/2009/10/weekend_project_evasive_beeping_thi_1.html. More great projects at http://www.makezine.com