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Theory and Practice of Tangible User Interfaces

Lab 1 - Blinking LED

Submitted by ash on Sun, 09/07/2008 - 18:14

Assignment: Introduction to Arduino and Physical Computing

Collaborators:

Description:

Setting up the Arduino and using the example software to create a blinking LED

Components Used:

  • Light Emitting Diode (LED)
  • 220-ohm Resistor
  • Arduino board
  • USB Cable

Original Example Code:


/*
* Blink
*
* The basic Arduino example. Turns on an LED on for one second,
* then off for one second, and so on... We use pin 13 because,
* depending on your Arduino board, it has either a built-in LED
* or a built-in resistor so that you need only an LED.
*
* http://www.arduino.cc/en/Tutorial/Blink
*/

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

void setup() // run once, when the sketch starts
{
pinMode(ledPin, OUTPUT); // sets the digital pin as output
}

void loop() // run over and over again
{
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
}

Modified for 100ms blink:

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

void setup() // run once, when the sketch starts
{
pinMode(ledPin, OUTPUT); // sets the digital pin as output
}

void loop() // run over and over again
{
digitalWrite(ledPin, HIGH); // sets the LED on
delay(100); // waits for a second
digitalWrite(ledPin, LOW); // sets the LED off
delay(100); // waits for a second
}