While not directly radio related, this was too amazing not to share (so forgive me in advance! There is an Arduino involved, if that helps?!)
The video above is of a robot which can solve Rubik’s Cube in about 1 second.
I will not embarrass myself in telling how long it takes me to solve it . . . .
It is, however, easy to see how radio hobbyists could find these Arduino boards quite intriguing!