This working cyborg arm built out of Lego is the brainchild of Diavo Voltaggio. He made the creation at Brick Fair in Chantilly, Virgina and calls it the Mark VI since it’s the sixth version of the arm that he has created. He built it using a Lego Mindstorms EV3 set. Mashable notes:
The Mark VI features LED lights and a smartphone cradle, although neither are necessary to the arm’s functioning. Despite its simplicity, the machine sucks up quite a bit of juice: Voltaggio says he has to replace the batteries in the arm every hour or so.
It all works via little buttons inside the arm that, when touched, cause motors to activate making the fingers open and close. Next up on his to-do list? A full body!
See video of the arm in action and an interview with the designer after the break.