News for hackers. Stuff that matters.

A comment on Mitsubishi robot solves Rubik's Cube in 0.305s. Parent comment

Re:Mitsubishi robot solves Rubik's Cube in 0.305s by irjustin on Thursday June 06, 2024 @02:22AM (#40594135)
The motor control process is simply insane especially since if you start to turn an adjacent face before the current face is aligned, the cube simply blows up.

Tuning that sucker must have taken so much time in going for the absolute fastest speed.

The guy's face of accomplishment tells me pressing GO is nerve wracking and that risk of it exploding is non-zero.

[ Parent | on HN ]
Re:Mitsubishi robot solves Rubik's Cube in 0.305s by randomtoast on Thursday June 06, 2024 @03:47AM (#40594694)
Explosions happen quiet frequently. Engineers are laughing, so I don't think it is a nerve wracking thing: https://www.youtube.com/watch?v=hURpaTfJqQk
[ Parent | on HN ]
Re:Mitsubishi robot solves Rubik's Cube in 0.305s by gravescale on Thursday June 06, 2024 @06:25AM (#40595748)
When you're doing it in front of the Guinness Book of Records observer, it does need to work within 'n' attempts (they had a cube jam on the first go).

I get nervous at a demo in front of Important Stakeholders even though the thing seems to work perfectly up to that point. Because demos summon gremlins.

[ Parent | on HN ]
Re:Mitsubishi robot solves Rubik's Cube in 0.305s by bigiain on Thursday June 06, 2024 @03:47AM (#40594689)
> Tuning that sucker must have taken so much time in going for the absolute fastest speed.

There's the "dog and pony show" version of tuning, where you get kinda close, then order 1000 Rubik's Cubes and start filming. Eventually you get lucky.

[ Parent | on HN ]
Re:Mitsubishi robot solves Rubik's Cube in 0.305s by BenjiWiebe on Thursday June 06, 2024 @11:03PM (#40604902)
Decent speed-cubes do not require full alignment before turning another face. The term is "corner cutting".
[ Parent | on HN ]