Softpot Rotary Potentiometer

From the shop's description

These are very thin variable potentiometers. By pressing down on various parts of the rotary dial, the resistance linearly changes from 100Ohms to 10,000Ohms allowing the user to very accurately calculate the relative position on the rotary. Can be used as an accurate positional indicator for rotational items, variable user input (volume level input for example), straight user input (multiple button areas translate to given resistance levels), and many other applications. Features Linear Position Sensor IP65 Dust Proof, Water Proof (Intense Spray) Polyester Substrate 3M Pressure Sensitive Adhesive (PSA) Resistance: 0 to 10k Ohms Diameter: 50mm Thickness: 0.5mm SoftPot Membrane Potentiometer Datasheet SoftPot Membrane Potentiometer Arduino tutorial Sparkfun SoftPot Membrane Potentiometer hookup guide and tutorial