A potentiometer is a three-terminal resistor with a rotating contact and a sliding contact that forms a voltage divider. It works with a variable resistance that limits part of the current depending on how the knob is turned. There are different types of potentiometers:Linear potentiometer: The resistance changes in a direct relationship.Logarithmic potentiometer: The resistance changes in a logarithmic relationship.Exponential potentiometer: The resistance changes in an exponential relationship.The potentiometer is commonly used in devices like radiators as a rheostat, or to increase or decrease the volume of a speaker. In this tutorial, we will see how to use it with a Raspberry Pi Pico. The Pico features a 12-bit Analog-to-Digital Converter (ADC), which will allow us to read the value of our potentiometer.Here’s the wiring diagram for the potentiometer on the Raspberry Pi Pico: // Define the pin used to read the potentiometer const int potentiometerPin = 26; // GPIO26 void setup() { // Initialize serial communication to display values Serial.begin(9600); // Configure GPIO26 as an analog input analogReadResolution(12); // Default ADC resolution: 12 bits (0-4095) } void loop() { // Read the analog value from the potentiometer int potentiometerValue = analogRead(potentiometerPin); // Display the read value on the serial monitor Serial.print("Potentiometer value: "); Serial.println(potentiometerValue); // Small delay to avoid overloading the serial monitor delay(100); }