I LOVE THIS THING!!!
I didn't make this, just so you know, i just enjoyed building it. The parts were really hard to find, but i managed to get my hands on them. I am sharing them right here with you.[link]
(the internal gear)[link]
(the box holding the mech)[link]
(the rotating parts)[link]
(the back of the gears)[link]
Anyway, i don't know who made this, but all credit is theirs.
Also, check my site [link]
too, i have uploaded some crafts there.
Btw, Happy New Year!