Blinking of LED with Arduino

Steps to connect a led with arduino :

• Take a led and first check its terminals for positive and negative.
• Among the two terminal ,the one with the short leg is negative terminal and the one with the long leg is positive one.
• Another way to find the terminal of led is to have a close look on the head of each one, the one with flat head is negative and pointed one is positive.
• Now take an arduino and upload the code given with the tutorial.
• The default led with arduino will glow according to the code given.
• Now connect the led with its positive terminal to pin number 13 and  negative terminal to ground.

Arduino Code for LED Blinking: DOWNLOAD

int led = 13;
void setup() 
{                
  pinMode(led, OUTPUT);     
}
void loop() 
{
  digitalWrite(led, HIGH);   
  delay(1000);              
  digitalWrite(led, LOW);    
  delay(1000);               
}