Fading an LED with Arduino

In this tutorial I will show you how you can make an LED fade using Arduino.

Materials Needed:

• Arduino Board (e.g., uno)
• Breadboard and jumper wires
• LED
• Resistor (270Ω)
• USB cable for Arduino
• Arduino IDE installed on your computer

Step 1: Set Up the Hardware:

1. Connect the short leg (cathode) of the LED to GND on the Arduino.
2. Connect the long leg (anode) of the LED to a resistor (270Ω) and to pin 13 on the Arduino. (Use a jumper wire for it to reach the Arduino pin)

Before we continue, here is how I arranged the components on the breadboard. (Insert an image of the new circuit)

Step 2: Connect your Arduino board to your computer:

Use the appropriate cable for your Arduino board.

Step 3: Writing the Code:

// Fading a single LED
int ledPin = 13; // Pin number for the LED

void setup() {
  pinMode(ledPin, OUTPUT); // Set the LED pin as an output

}

void loop() {
 for (int brightness = 0; brightness <= 255; brightness++) {
    analogWrite(ledPin, brightness);
    delay(5); // Adjust the delay for the desired fade speed
  }

  // Fade out
  for (int brightness = 255; brightness >= 0; brightness--) {
    analogWrite(ledPin, brightness);
    delay(5); // Adjust the delay for the desired fade speed
  }
}

Step 4: Uploading the Code:

Make sure that in your Arduino IDE, the correct board is selected, and click on the upload button.

Your code should be uploaded successfully.

Test Your Fading LED:
Run the uploaded code on your Arduino board, and you should observe the LED fading in and out, creating a smooth fading effect.

Happy coding! ✨

You can what a demo here at the end of this article