A pointing device for use with computers and other electronic systems incorporates an array of resistive strain gauges on the surface of a substrate. The strain gauges exhibit resistance changes in response to stress or strain applied to the substrate by the movement of a joystick attached to the substrate,...http://www.google.es/patents/US6243077?utm_source=gb-gplus-sharePatente US6243077 - Sensor and circuit architecture for three axis strain gauge pointing device and force transducer
Sensor and circuit architecture for three axis strain gauge pointing device ...
