An adjustable potentiometer can open up many interesting user interfaces. With this 100k Ohm logarithmic pot just turn the dial and the resistance changes.
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An adjustable potentiometer can open up many interesting user interfaces. With this rotary potentiometer just turn the dial and the resistance changes. This potentiometer from Bourns has a ¼" metal knurled shaft diameter, PC pin terminals, no detents, and has a 100K logarithmic taper.
Connect VCC to an outer pin, GND to the other, and the centre pin will have a voltage that varies from 0 to VCC depending on the rotation of the pot. Hook the centre pin to an ADC on a microcontroller and get a variable input from the user!
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