this is an instructional video about the operation and recommended uses of the Phantom LImb Generator, a home amputation appliance. this is a bit more in depth:

The bronco table is an autonomous robot, controlled by an arduino microcontroller.  The legs are actuated by 12vdc automotive motors (I think they might be windshield wiper motors), and they are powered by a lead acid battery that has been recessed into the tabletop.  Its primary sensor is a piezo-electric disc, the kind commonly used […]