As you're no doubt well aware, the government is always looking for new ways to make dissidents feel uncomfortable. In this space alone we've seen devices meant to cook folks with microwaves, zap 'em with electricity, and make 'em nauseous using light. Taking inspiration from the last one, the open source pranksters at Adafruit Industries have built a contraption of their own called the Bedazzler. It's powered by an Arduino and, unlike the original, Adafruit's version doesn't seem to work for the purpose incapacitating no-goodniks -- but that's probably a good thing. For some background on this extremely less than lethal device, peep the the video after the break. And then hit the read link to build one yourself.
Adafruit's DIY 'less lethal' weapon looks cool, doesn't really work
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