Description

Make the LED (Light Emitting Diode) blink using the Arduino board.

Components Used

LED (Light Emitting Diode)
20-ohm resistor (red, red, brown, gold)

Arduino Code

/* Blinking LED
* ------------
*
* Created September 5, 2007  
*
* Turns on and off a LED connected to digital pin 13. Pin 13 has a
* resistor attached to it requiring only the LED to make this work.
* For the sake of practice, the circuit with the resistor was created. 
 * based on: http://www.arduino.cc/en/Tutorial/Blink
*/

int ledPin = 13; // LED connected to digital pin 13

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

void loop()
{
digitalWrite(ledPin, HIGH); // sets the LED on
delay(1000); // waits for a second
digitalWrite(ledPin, LOW); // sets the LED off
delay(1000); // waits for a second
}

Item

lab1 - breadboard with blinking LED