You mean like this: 500mm flexible membrane potentiometer at Sparkfun They have longer and shorter ones.
0.25mm accuracy is ridiculous. Unintentional changes in pressure will spread your fingertip out by more than that much.
You mean like this: 500mm flexible membrane potentiometer at Sparkfun They have longer and shorter ones.
0.25mm accuracy is ridiculous. Unintentional changes in pressure will spread your fingertip out by more than that much.