Rubik’s Cube Solver Made Out of Popsicle Sticks and an Arduino

rubix cube solver

[Matt] recently learned both how to solve a Rubik’s cube and the basics of an Arduino. Putting the two together, he decided to try his hand at making an automatic Rubik’s Cube solver!

We’ve seen this done quite a few times using LEGO Mindstorms, but we’re much more impressed with [Matt’s] clever use of popsicle sticks and mechanical linkages…. The device uses just two servos. One to rotate the base, and the second to flip the cube over.

He’s using an Arduino UNO (R3) with 2 Hitec HS-311 hobby servos, some popsicle sticks, hot glue, a paper towel roll, and a bit of plywood. He wrote the code to solve the cube himself, and has shared it on GitHub — but he didn’t stop there and decided to create a GUI to go with it using Python.

It’s not that fast, but it’ll solve a cube in about 20 minutes — stick around after the break to see it in action!

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Cube solving robot shatters the world record

This cube-shaped bot just shattered the robotic Rubik’s Cube solving record by about 8 seconds. It did it in a blazing 10.69 seconds to best the old record of 18.2 seconds. There was immediate confusion here at Hackaday as some of us thought the record was actually around six seconds. And it is, for humans. That’s right, the human record holder completed a cube in 6.24 seconds… faster than a robot by almost four seconds. It’s surprising that we can still beat mechanized devices at some repetitive mechanical operations.

Take a look at the speed run shown in the video after the break. What strikes us is that the motions are incredibly efficient, and the bot is very quite. Compare that efficiency to CuBear, a solver that uses a different motor for each side of the cube. That one doesn’t need to grip the cube making us think it could beat this version if the firmware were quite a bit faster.

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