Robot solves Rubik's cube in just 0.38 seconds!

[qubit]

I'd like to know more about the algorithm used for this as it's pretty efficient.

https://www.sciencealert.com/robot-solves-rubiks-cube-breaks-record-0-38-seconds-contraption

 

[BiggieShady]

Six rotational axles with 90 degree step and a few cameras ... the rest is software
the trick is that middle column/row slices are always fixed by other arms ... it's always rotating side (or top or bottom) slices, so to rotate middle slice relatively it must rotate both side slices at the same time same amount

1. Cameras acquire starting condition images
2. Software scans images and calculates series of movements to a final solution
3. Robot executes series of movements as fast as possible

It's pretty cool

 

[MrGenius]

A better thread title would be : Robot Makes Mistake By Requiring 21 Moves To Solve Rubik's Cube In Just 0.38 Seconds!

Every position of Rubik's Cube™ can be solved in twenty moves or less.

http://www.cube20.org/

 

[jboydgolfer]

maybe its only if you have hands ? but it might be a limitation of the robots implementation. meaning the human hand is capable of doing it in fewer moves, but due to its limitations it cannot match that movement ability

 

[MrGenius]

No. But it's not really a stupid question to ask. It proves your brain is working.

Simply put. The robot has 6 hands that can make any, and every, move 2 human hands could.

 

[jboydgolfer]

maybe ask the people who developed it, and see if they would answer that for you

I lookd into that 20 moves or less point, & I would guess that its something to do with the purpose of the project ,and not so much a concern of the developers. From what I can tell ,it's not the amount of turns that was what they were trying to better ,but rather the time it took to solve the puzzle. Rationally, one would assume that less moves would equal less time, but I'm guessing that certain rotations are longer than others ,and maybe it was faster to do it in 21 as opposed to 20. It's not very interesting to me but certainly impressive endeavor

 

[qubit]

A better thread title would be : Robot Makes Mistake By Requiring 21 Moves To Solve Rubik's Cube In Just 0.38 Seconds!


http://www.cube20.org/

Nah, I'm fine with the title as it is. Nice and catchy! But thanks anyway.

 

[BiggieShady]

No. But it's not really a stupid question to ask. It proves your brain is working.

Simply put. The robot has 6 hands that can make any, and every, move 2 human hands could.

I tried to explain it in my post, the way other hands always keep middle slices fixed require 1 extra move to rotate middle slice relatively to others