Personally, I never gave a flyin' fandango about the Rubik's Cube craze (which is on the rise again) but this Lego-based unit is fascinating to me. Yes, it's very slow compared to some amazingly fast ones out there, but IMHO this one is within reach for the home hobbyist to build, for a normal 3x3x3 cube. Hobby servos can do all the work here. The heck with the smartphone camera app, a simple colorpal could be used to read the block colors. Under the control of a mighty BS2! Two BoeBots with rotating grippers working in unison would be sa-wheat.
I'll get a round tuit eventually if no one beats me to it.
"When you make a thing, a thing that is new, it is so complicated making it that it is bound to be ugly. But those that make it after you, they don’t have to worry about making it. And they can make it pretty, and so everybody can like it when others make it after you."