Circuit With One LED & Potentiometer

The LED will turn on when the potentiometer is between 2 values. It will turn off otherwise. The Serial monitor in the Arduino IDE app will continuously print the value of the potentiometer.

The circuit uses:

1. 1 LED
2. 1 potentiometer
3. 1 330 ohm resistor
4. Elegoo UNO R3 microcontroller board
5. Breadboard
6. Laptop
7. USB cord

Go to https://www.arduino.cc/en/software

Use a USB cord to attach the Elegoo board to your device.

Connect one wire from pin 9 to the resistor, then connect the resistor to the LED. Then use another wire to connect the LED to ground.

Put the potentiometer on the breadboard. The left wire goes to power (5V). The right wire goes to ground.

Use another wire to connect the bottom of the potentiometer to A2. Finally, add the the knob to the potentiometer.

https://github.com/tejbho/ArduinoProjects/blob/main/potentiometer/potentiometer.ino

Turn the knob on the potentiometer until the LED light turns on. The light should turn on when the value is between 2 and 3. Then turn the knob back to see that it turns off.