Rubik cube solver robot (V-shape)

Core requirements
Stand-alone (no PC; no smartphone)
Nice looking (minimum cable; solid standing; no “gimmics”)
Should work for all cubes (typical size 2”), in any sticker configuration (pure color; no pattern)
Should work in difficult light situation.
If center stick is marked with a logo it might be required to cover it with the appropriate color (normally those logos are printed on the white center – therefore no problem using a white sticker)
No speed record - but reasonable fast

Concept and idea:
https://forum.arduino.cc/index.php?topic=271827.0

Heavy duty gripper (including link to Fusion360 Files):
https://www.thingiverse.com/thing:2800244
changes, improvements:
- Holder with soft rubber (4mm) to control gripper force more easily
- Smaller holder due to conflict caused by inaccurate gripper movement (mechanics and servos)
- Support of turning servo (turning supported by basement and not only hold by servo axis)

result:
https://youtu.be/Xv4a6-XM1M4

Typic