Here is a 3D printed robot arm that can be controlled using a Kinect. OpenMYR have been spending months on smart motors that can be dropped into projects and controlled wirelessly.
This robot arm can mimic hand movements using data from a Kinect. A Node.JS script was used to send data to the motors. The 3D design for this project is available here. Pretty neat, don’t you think?
[H/T: OpenMYR]