A group of engineering students from Purdue University have built the world's fastest Rubik's Cube-solving robot, achieving a Guinness World Record time of just 0.103 seconds.
The team focused on improving nearly every aspect of the process, not only faster motors, from image capture to cube construction.
Rather than processing full images, the robot uses low-resolution cameras aimed at opposite corners of the cube, capturing only the essential parts of the image to save time.
Instead of converting camera data into full digital pictures, the system directly reads colour data to identify the cube's layout. Although slightly less accurate, the method allows quicker recognition and faster solving.
The robot, known as Purdubik's Cube, benefits from software designed specifically for machines, allowing it to perform overlapping turns using a technique called corner cutting. Instead of waiting for one rotation to finish, the next begins, shaving off valuable milliseconds.
To withstand the stress, the team designed a cube with extremely tight tension using reinforced nylon, making it nearly impossible to turn by hand.
High-speed motors controlled the robot's movements, with a trapezoidal acceleration profile ensuring rapid but precise turns. The students believe the record could fall again-provided someone develops a stronger, lighter cube using materials like carbon fibre.
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