Arduino : Blinking LED

Simple and first program of Arduino  for blinking of LED. [ This program is look like "Hello World"  for arduino.

Required Items.

1. LED

2. Arduino

3. 5V

Program for blinking of LED in Arduino.

/*   Blink */ #define  LED 13 // It will connect to digital pin 13  you can choose your own pin. // the setup function runs once when you press reset or power the board void setup() {     pinMode(LED, OUTPUT); } // the loop function runs over and over again forever void loop() {   digitalWrite(LED, HIGH);   // turn the LED on (HIGH is the voltage level)   delay(2000);                       // wait for a second   digitalWrite(LED, LOW);    // turn the LED off by making the voltage LOW   delay(2000);                       // wait for a second }

LED 13 shows the Pin for input the longwirde of Led.