Leap-motion is changing the way we interact with computers. It’s a small device that you plug into your computer that tracks the movements of your hands. Your gestures can then be turned into commands that can control applications or like in the video a robot arm.
This might look like a very primitive design but if you consider that the Leap-Motion costs less than US$100 and the little robot arm was made in a few hours with materials you can buy at your local hardware store.
Credit need to go to [Yu Jiang Tham]