The laser harp is a 33-note homemade instrument. It uses a simple microcontroller circuit to monitor the signals from ordinary pen lasers and generate MIDI signals.
Web site: http://pics.cibomahto.com/main.php?g2_itemId=1002
Video URL: http://files.cibomahto.com/laserharp/0027.avi
Matt Mets
I'm a classically trained electrical engineer, and enjoy repurposing electronic garbage into things that amuse me. I'm also quite interested in free software and other cool stuff like that.
http://cibomahto.com