Project1 - LED Brightness Control

1. What You Will Build

In this tutorial, you will learn how to build Project1 - LED Brightness Control using Easyplug Super Starter Kit .

By the end of this tutorial, your project will be able to:

• Adjustable LED brightness using a potentiometer

• Real-time analog input reading from the Arduino

2. What You Will Learn

After completing this tutorial, you should understand:

• How to control LED brightness using a potentiometer

• How to read analog input values from the potentiometer

• How the code works step by step

3. Components Needed

4. Software Needed

Use the tools below depending on your board.

Libraries Needed

No libraries needed

5. Circuit Connection

Connect the components as shown below.

Wiring Steps

1. Connect Potentiometer Sensor to GPIO A0 on the board.

2. Connect Blue LED to GPIO D9 on the board.

6. Code

int potPin = A0;      // potentiometer input
int ledPin = 9;       // LED PWM pin
int potValue = 0;     
int brightness = 0;

void setup() {
  pinMode(ledPin, OUTPUT);
}

void loop() {
  potValue = analogRead(potPin);          // read potentiometer value (0-1023)
  
  brightness = map(potValue, 0, 1023, 0, 255); // convert to PWM range (0-255)

  analogWrite(ledPin, brightness);        // control LED brightness
}

7. Upload / Run the Project

1. Connect the board to your computer using USB.

2. Open the code in Arduino IDE.

3. Select the correct board.

4. Select the correct port.

5. Click Upload.

6. Open the Serial Monitor if needed.

8. Expected Result

When the project is working correctly:

• Potentiometer turn → LED brightness increases/decreases smoothly

9. Troubleshooting