The Mary Sue

Robotic Rubik’s Cube Solver in Action


As tough as Rubik’s Cubes might be to solve for you, it turns out that all you need to solve a 4×4 cube is some LEGO Mindstorms parts, a mass-market LEGO programmable robotics kit, and a Nokia smartphone from three years ago.

The execution is the tricky part:

The YouTube description is hazy, but according to Make, the bot “uses a Nokia N95 mobile phone that sits in a cradle above the cube, scanning it with its camera and solving the puzzle.”

One patient YouTube commenter counted a solution of just 109 moves in 15 minutes. Remarkable.

Microprocessor company ARM, which posted the video, has a channel well-stocked with other neat robotics videos, so be sure to check them out.

(h/t Make)

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