I'm not just a linux user, I'm a cuber. So I tend to follow all the best puzzle designers. This guy, Oskar van Deventer, creates many weird and wonderful puzzles, and I see him as the best puzzle maker in the world. This time, however, he's taken a leap away from his usual field of twisty puzzles and made an electronic puzzle using Arduino technology. Have a look....
http://twistypuzzles.com/forum/viewtopi ... 18&t=22297
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