self solving cube

There's also a reconstruction, btw. It's kinda hard to see what's going on in the video because the cube keeps moving all over the place.

/* Scramble */
x y2 F U' L' D B' R2 U2 L2 D2 U2

/* Solve */
(F' y) (F2 y') u U' (F2 y') B' (R2 y') // cross
L (F2 y2') (R' y) (R2 y') (R y') (L' y) (R' y) // first slot
(R y') u (R2 y') u' (L y') L' (F' y) B // second slot
U (L2 y2') U' (R' y) U (F y') U' // third slot
R2' B (l' y) u' (R y') u // last slot
(R' y) u2' (R y') u (R' y) u (F2' y) // OLL
D z u' L U' (L y') U F' u (F2 y') (B y') U' (L' y) // PLL

// View at alg.cubing.net
 
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It looks to have radio-control model servo's, repurposed. And not the tiniest servo's, either. There's some pretty small light servo's out there, sub-5 grams, using motors that are typically found in cellphone vibration units. But they're perhaps not strong enough for this application, so he's had to wedge in some beefier ones, judging by the motors that are visible.
Most of the small green PCB's are simply 'break-out boards' that adapt the tiny 10-pin chip to large solder-pads that make wiring them up easier.
My hunch is the cube is 'dumb', and receives it's instructions from outside, via Radio or Infrared link.

It's a neat piece of engineering, though. I'm curious as to what feedback method is used to control the position of the centre-pieces. I suspect it's a simple rotary shaft encoder on the output shaft, something like the Bourns ones:
https://uk.rs-online.com/web/p/rotary-encoders/6928610/
The small boards with the 10-pin IC on will be the motor controller, driving the motor, and reading the encoders outputs for feedback.
 
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