Published: Sat, March 10, 2018
Technology | By Christopher Mann

Robot Solves Rubik's Cube Puzzle in 0.38 Seconds

Robot Solves Rubik's Cube Puzzle in 0.38 Seconds

About a year ago last March, a robot called the Sub1 solved a Rubik's Cube in 0.637 seconds, earning it the Guinness World Record for being the fastest cube-solving bot. The Rubik's Contraption uses a pair of PlayStation Eye cameras in order to near-instantly analyze and evaluate the most efficient way to solve a Rubik's Cube.

If you've ever thrown a Rubik's Cube at the wall in frustration, you're going to hate this robot. The Rubik's Cubes cost $4.55 and the PlayStation cameras cost $7.

'We noticed that all of the fast Rubik's Cube solvers were using stepper motors, and thought that we could do better if we used better motors, ' Di Carlo wrote in a blog post.

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The machine is so fast that not all the cubes survived the experiment.

The researchers used another savvy, albeit 'counterintuitive, ' trick that helped them solve the puzzle in record speed.

In a blog post, Di Carlo revealed the team expected to break a lot more Rubik's Cubes than they did.

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Meanwhile, if you want to take on the fastest person to solve a Rubik's Cube, check out SeungBeom Cho, who solved a Rubik's Cube in just 4.59 seconds in October past year.

If the cube wasn't rigged super tight, the researchers risked it shattering into pieces, which they documented in a separate video. The algorithm designed inside the cube determines the step by step process involved in solving the Rubik's cube. He has been awarded Guinness Book Record for creating such a robot. Due to the motor's design, the hardware is able to "accelerate insanely fast", with a speed exceeding 1,000rpm during a 10ms quarter-turn of the cube. "But the tuning process is really time consuming since the debugging needs to be done with the high-speed camera, and the mistakes often break the cube". If the movements of the motors happen to overlap, even for a hundredth of a second, it will simply tear a Rubik's Cube apart, as demonstrated below.

Korean SeungBeom Cho smashed his previous personal best of 6.54 seconds.

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