Rubik's cube/Lego/geek porn (SFW, natch).
It's a very dull video of a record-breaking piece of super cool Lego machinery controlled by a smartphone. Which I suspect some here might like!!
For those of you thinking you know what to expect, this is the whizz-bang faster version, yay!
Impressive, but I'd be much more interested in seeing an average of 5. I would also have liked to see the scrambling and inspection in the video.
Cedric Lackpot - - Parent #
Same here Peter, which is why I described the video as very dull - it just fails to address a number of questions, and even manages to make a really interesting marriage of hardware and software a bit dull. Hopefully a more edifying piece will arrive in good time.
What really caught my imagination was just how fast would such a device go if it were made of proper industrial automation components, instead of mere Lego?
Human solvers such as Felix can do 10 turns per second. So if the robot could do that with an optimal solver then it could get under 2s.
For some reason i remembered this post today. Looking around the internet i found some stuff from older versions of the cubestormer ( https://youtu.be/staapsj3eRQ and https://youtu.be/PXiRToQgRhg ). It looks like they include the inspection time in the solve time. The device only has 4 hands so has to perform a puzzle rotation to do turns on the other two faces. So they cant always use the least turns solution (17 moves max).
As for their solve times it seems to be down to how fast the servos can move to perform the moves. As the inspection and calculations are really just how fast they can rotate the cube to take the pics. Perhaps using 6 cameras to do the inspection without having to perform rotations would save half a second.
I also found this video (https://youtu.be/laPVTrzGDpA) of a device made from industrial components. though they haven't included inspection and they modifyed the cube for the machine to hold it easier. i think it shows approximately how has the ultimate machine solve would be. From there its just faster servos/cubes.
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