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This force-sensing linear potentiometer (FSLP) from Interlink Electronics is a passive component with internal resistances that independently change in response to the location and magnitude of an applied force. This allows a microcontroller with an analog-to-digital converter (ADC), such as an Arduino, to easily determine where and how hard the strip is being pressed； enabling advanced touch-control user interfaces (like menu navigation) or sophisticated tactile sensors. The FSLP is effectively a force-sensing resistor (FSR) that can also simultaneously sense position.
The 1.5″ × 0.53″ strip is light (0.5g) and extremely thin (0.025″) with an active sensing area of 1.4″ × 0.39″ and a flexible 0.55″ × 0.2″ sensor tail for accessing its three terminals (the fourth terminal is not used). It does not appreciably compress when pressure is applied. While it is flexible, it is intended to be used on smooth, flat surfaces since bending can adversely affect its performance. The FSLP has a masked adhesive backing for easy mounting.