RedLeg writes: Originally found this while trolling the excellent Make blog. The prototyping techniques are interesting hacks in-and-of themselves, but it's the "captcha" at the bottom of this and the other blog entries over at Adafruit Industries that really captured my attention. If this doesn't awaken your inner hardware nerd, nothing will....
"It ain't so much the things we don't know that get us in trouble. It's the
things we know that ain't so."
-- Artemus Ward aka Charles Farrar Brown