Question

Write a simple Arduino program to blink a LED with 500 msec. delay in between On and off.

Answer 1

Answer:

// the setup function runs once when you press reset or power the board

void setup() {

 // initialize digital pin 13 as an output.

 pinMode(13, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

 digitalWrite(13, HIGH);   // turn the LED on (HIGH is the voltage level)

 delay(1000);              // wait for a second

 digitalWrite(13, LOW);    // turn the LED off by making the voltage LOW

 delay(1000);              // wait for a second

}

Explanation:

Answer 2

Answer:

Concept

First of all understand the concept.

void setup(): put your setup code here, to run once.

void loop(): put your main code here, to run repeatedly.

Coding

// program of blinking of LEDs

void setup()

{

pinMode(8, OUTPUT);

}

void loop()

{

digitalWrite(8, HIGH);

delay(500);

digitalWrite (8, LOW);

delay(500);

}

Note : Here, 500 is the time duration in milliseconds.