Abstract: A multi-function control system for generating control signals in response to the movement of an operator's body is disclosed.An arrangement of the multi-function control system for controlling the speed and direction of a wheelchair (12) includes a mirror (16) for mounting on the head of the operator, a housing (20) attached to the wheelchair, a light source (26) within the housing for shining on the mirror, light sensors (30, 32, 34, and 36) for sensing the light reflected by the mirror, and a control circuit (38) for driving the wheelchair motors (70 and 72) in response to the output signals of the light sensors. The housing forms an opening facing toward the mirror when the operator's head is in the normal forward position.The control circuit includes an input (39) that responds to the output signals of the light sensors, a signal processing circuit (43), and an output (53) which responds to the signal processing circuit.