LED Dimmer

TThe LED Dimmer project demonstrates how to control the brightness of an LED using a potentiometer and Arduino Mega. By reading the analog input from the potentiometer, which acts as a voltage divider, the Arduino converts this analog signal into a corresponding PWM (Pulse Width Modulation) signal to adjust the LED's brightness. This project allows users to interactively dim or brighten an LED based on the potentiometer's position.

Components Needed

• Arduino Mega
• LED (any color)
• 220-ohm resistor (for LED protection)
• Potentiometer (10k ohm)
• Jumper Wires
• Breadboard
• Power Supply

Block Diagram

Circuit Setup

Connect the LED and Potentiometer to Arduino Mega:

One pin to 5V (VCC)

One pin to GND

Middle pin (wiper) to analog pin A0 on Arduino Mega

Instructions

Circuit Setup:

Wire the LED and resistor as per the connection diagram provided.

Connect the potentiometer to provide analog input to the Arduino.

Code Upload:

Open the Arduino IDE and create a new sketch.

Copy and paste the provided Arduino code into the sketch.

Testing:

Upload the code to the Arduino Mega.

Adjust the potentiometer knob to vary the LED brightness.

Observe how changing the potentiometer's position changes the brightness of the LED.

Applications

Notes