Lego robot builder Simon "Burf" Burfield has built this Lego motorized wheelchair. It can carry a 90kg person (198 pound). The 44 pound creation was created from six Lego Mindstorms NXTs, 12 Mindstorms motors, 12 Lego Mindstorms touch sensors, 12 Rotacaster mult-directional wheels and a "whole load of Lego Technic." The wheelchair is driven by a four-direction joystick.
"There is a master NXT which controls the 6 NXT via turning on/off touch sensors. The joystick is connected to 4 touch sensors to determine direction (forward, backwards, turn left, turn right). "