SBRDIYables
Published © GPL3+

Working with LED

A step by step procedure to work with LED using Arduino.

BeginnerProtip6,319
Working with LED

Things used in this project

Hardware components

Arduino UNO
Arduino UNO
×1
USB Cable 2.0 Type A/B for Arduino Uno
DIYables USB Cable 2.0 Type A/B for Arduino Uno
×1
LED
DIYables LED
×1
Resistor
DIYables Resistor
×1
Jumper Wires
DIYables Jumper Wires
×2
Breadboard
DIYables Breadboard
×1
Starter Kit
DIYables Starter Kit
Optional
×1
Prototype Expansion Board for Arduino Uno
DIYables Prototype Expansion Board for Arduino Uno
Optional
×1

Software apps and online services

Arduino IDE
Arduino IDE

Story

Read more

Schematics

Circuit Diagram

Created using Visio Professional

Breadboard Diagram

Make connections as shown in the figure.

Schematic Diagram

Code

LED forever ON

Arduino
const int LED = 3;

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

void loop() {
    digitalWrite (LED, HIGH);
    
}

Blinking of LED

Arduino
const int LED = 3;

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

void loop() {
    digitalWrite (LED, HIGH);
    delay (1000);
    digitalWrite (LED, LOW);
    delay (1000);
}

LED ON for 2s and OFF for 3s

Arduino
const int LED = 3;

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

void loop() {
    digitalWrite (LED, HIGH);
    delay (2000);
    digitalWrite (LED, LOW);
    delay (3000);
}

Fading Effects of LED

Arduino
const int LED_ao = 3;

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

void loop() {
    for (int brightness=1; brightness<=255; brightness++)
    {
      analogWrite (LED_ao, brightness);
      delay (10);
    }
    for (int brightness=255; brightness>0; brightness--)
    {
      analogWrite (LED_ao, brightness);
      delay (10);
    }
}

Fade IN and Fade OUT at different speeds

Arduino
const int LED_ao = 3;

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

void loop() {
    for (int brightness=1; brightness<=255; brightness++)
    {
      analogWrite (LED_ao, brightness);
      delay (25);
    }
    for (int brightness=255; brightness>0; brightness--)
    {
      analogWrite (LED_ao, brightness);
      delay (5);
    }
}

Credits

SBR
37 projects • 52 followers
Mechanical Engineer
DIYables
1 project • 89 followers
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