Arduino basic | Onboard led blink program | #1

Introduction 

This program helps you to check that your Arduino board is working fine  without any other hardware components.

This program just  blinks the onboard led to check that your Arduino board is fine 

Step1

Download Arduino IDE 

Install it 

Or download Arduino droid on android

No need to download any other libraries 

Step 2

Now just copy this code 

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// 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(1000);                       // wait for a second

  digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW

  delay(1000);                       // wait for a second

}

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Now just compile and upload the code to your Arduino board

Now you can see that the onboard led starts to blink 

If you have any doubts comment your problem below