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→Force Sensing Resistor
==== Force Sensing Resistor ====
FSR:.
[[Image:FSR.JPG|300px]]
Voltage returned is proportional to force applied to surface.
Good for physical interfaces (my ex http://roberttwomey.com/hitme/)
http://www.trossenrobotics.com/store/p/3221-1-5-Inch-Force-Sensing-Resistor-FSR-.aspx
[more force sensors http://www.trossenrobotics.com/store/c/2670-Force-Sensors-Pressure-Touch-Sensors.aspx]
http://www.tekscan.com/flexiforce/flexiforce.html
==== ultrasonic and IR rangefinders ====