/* Learn to use and blink an LED with Arduino - Tutorial
   More info and circuit schematic: http://www.ardumotive.com/how-to-blink-an-led-en.html
   Dev: Michalis Vasilakis / Date: 19/10/2014                                   */

//Constants
const int ledPin = 3; 

void setup() {     
  
  //Initialize the digital pin as an output with pinMode()
  pinMode(ledPin, OUTPUT); 
  
}

void loop() {
  
  digitalWrite(ledPin, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(3000);                  // wait for 3 seconds
  digitalWrite(ledPin, LOW);    // turn the LED off by making the voltage LOW
  delay(3000);                  // wait for 3 seconds
  
  
}