How to Blink an LED with Arduino

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Blinking an LED with Arduino is one of the cool & basic Arduino tutorials for beginners you can say its a “Hello World” program of any programming language this tutorial is really easy to make all the step by step clear instructions are given in the video below. Must Watch

Hardware Components

The following are the necessary hardware items required for creating LED Cube Project.

S.NO	Component	Value	Qty
1.	Arduino	Uno R3	1
2.	LED	5mm	1
3.	Breadboard		1

Useful Steps

Follow all steps carefully from the video tutorial at the beginning of this post (Highly Recommended).

Arduino Code

/*
  Blink

  Turns an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
  it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
  the correct LED pin independent of which board is used.
  If you want to know what pin the on-board LED is connected to on your Arduino
  model, check the Technical Specs of your board at:
  https://www.arduino.cc/en/Main/Products

  modified 8 May 2014
  by Scott Fitzgerald
  modified 2 Sep 2016
  by Arturo Guadalupi
  modified 8 Sep 2016
  by Colby Newman

  This example code is in the public domain.

  http://www.arduino.cc/en/Tutorial/Blink
*/

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(200);                       // wait for a second
  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
  delay(200);                       // wait for a second
}