SparkFun
Rotary Potentiometer - 100k Ohm, Linear (Panel Mount)
An adjustable potentiometer can open up many interesting user interfaces. With this rotary potentiometer just turn the dial and the resistance changes. This ...
An adjustable potentiometer can open up many interesting user interfaces. With this rotary potentiometer just turn the dial and the resistance changes. This potentiometer has a ¼" metal knurled shaft diameter, solder lug terminals, no detents, and has a 100K linear taper.
Connect VCC to an outer pin, GND to the other, and the center pin will have a voltage that varies from 0 to VCC depending on the rotation of the pot. Hook the center pin to an ADC on a microcontroller and get a variable input from the user!
Jargon buster
Plain-language definitions for the technical terms used above.
- ADC
- An analogue-to-digital converter reads a changing voltage and turns it into a number the microcontroller can use. It matters when connecting analogue sensors such as light, sound, or variable-resistor sensors.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- potentiometer
- A variable resistor usually turned with a knob or shaft to create an adjustable electrical signal. It is often used for inputs such as volume, brightness or position, so it helps beginners learn how a microcontroller reads changing values.
Find this product in
Brands
Sensors & Input
PDB18 Potentiometer Datasheet
Datasheet · 577.8 KB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 442.9 KB · Click any page to view full size
Related Tutorials
Free guides on learn.littlebird.com.au
