Got a relative who keeps cheating his way out of your yew maze? This holiday season, perhaps you should consider a different kind of challenge: Oskar van Deventer's Four Bit Maze. The apparently simple goal is to move the quartet of sliders from zero to one, but an Arduino UNO microcontroller makes things a bit trickier. It's programmed with ten different puzzles, each requiring a different sequence of movements to solve. An Arduino Motor Shield operates the motorfaders, and the whole thing's USB-programmable, meaning you can tweak it to your heart's content. See an in-depth video demonstration after the break if this sounds like your idea of fiendishly difficult fun.
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