Resistor 100 Ohm 1/4 Watt PTH - 20 pack (Thick Leads)
P R T - 1 4 4 9 3
Suggested Reading
Before continuing with this experiment, we recommend you be familiar with the concepts in the
following tutorial:
Analog to Digital Conversion
Introducing the Potentiometer
A potentiometer is a resistance-based analog sensor that changes its internal resistance based on
the rotation of its knob. The potentiometer has an internal voltage divider enabling you to read the
change in voltage on the center pin with a microcontroller (i.e. micro:bit).
To hook up the potentiometer, attach the two outside pins to a supply voltage (3.3V in this circuit)
and ground. It doesn’t matter which is connected where, as long as one is connected to power, and
the other to ground. The center pin is then connected to an analog input pin so the micro:bit can
measure the change in voltage. When you twist the knob, the sensor reading will change!
Note:
The potentiometer included in the kit has three marks on it that will help you figure out which
breadboard rows the pins are plugged into.
Hardware Hookup
Ready to start hooking everything up? Check out the wiring diagram and hookup table below to see
how everything is connected.
