LED Lab Exercise

Submitted by m-craig on Wed, 01/30/2013 - 19:13

For this assignment, I created a blinking LED display by running a simple circuit through a single LED light from an Arduino UNO board.  I used a provided code sketch to cause the light to blink on and off in intervals of one second, then modified the code (see below) to create a sequence of two short blinks and one long blink.


Components used:

1 Arduino UNO Board

1 Breadboard

1 220-ohm resistor

1 LED light

1 USB Power Supply



  Turns on an LED on for one second, then off for one second, repeatedly.
  This example code is in the public domain.
// Pin 13 has an LED connected on most Arduino boards.
// give it a name:
int led = 13;

// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(led, OUTPUT);     

// the loop routine runs over and over again forever:
void loop() {
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(150);               // wait for a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(100);               // wait for a second
  digitalWrite(led, HIGH);
  delay (150);
  digitalWrite(led, LOW);
  delay (200);
  digitalWrite(led, HIGH);
  delay (600);
  digitalWrite(led, LOW);
  delay (80);

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