Circuit Description and Working
The potentiometer, also known as a variable resistor, is attached to a circuit and allows the voltage to be varied by increasing or decreasing the resistance. We will utilize this variable resistance to adjust the brightness of the LED. For example, increasing the resistance will allow less current to reach the LED, causing it to glow less brightly. Similarly, lowering the resistance allows more current to be sent to the LED, causing it to glow brighter.
How to Perform for LED Control Using Potentiometer?
Following steps need to perform for LED control using potentiometer.
- Connect the longer pin (anode) of the LED to a resistor, and then connect the other end of the resistor to one of the Arduino’s digital I/O pin.
- Connect the shorter pin of the LED to the GND (ground) pin.
- Connect one end of the potentiometer to the 5V pin on the Arduino.
- Connect the other end of the potentiometer to the GND pin on the Arduino.
- Connect the middle pin of the potentiometer to an analog input pin (e.g., A0) on the Arduino.
LED Control with Potentiometer using Arduino
In the field of electronics and programming, controlling an LED with a potentiometer is important too. By varying the resistance of the potentiometer, you can change the brightness of the LED. We will interface an LED (light-emitting diode) to the Arduino UNO board. An LED is a simple diode that emits light with a forward bias. We control the brightness of an LED by interfacing a potentiometer with it. We write a program in the Arduino IDE and download it to the microcontroller board.