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Blinking Lights Program

This version was saved 11 years, 4 months ago View current version Page history

Saved by Jonathan Dietz
on May 1, 2013 at 8:25:01 pm

See detailed explanation of Blink at

See video explanation of this project at:

http://k12videos.mit.edu/content/arduino-tutorial-1--

what hardware components were omitted?

// each LED is connected through a 220 ohm resistor
// to the indicated digital pin
// long lead is +
// short lead is connected to ground

//set the pin ports

int ledA = 4;
int ledB = 5;
int ledC = 6;
int ledD = 7;

//set LED pins as output pins
void setup() {
pinMode(ledA, OUTPUT);
pinMode(ledB, OUTPUT);
pinMode(ledC, OUTPUT);
pinMode(ledD, OUTPUT);
}
//actual loop for blinking lights; each LED is turn on then off in series
//make sure that the function is enclosed in brackets {}, not parentheses ()
//and that each statement ends with a semicolon; void loop() {
digitalWrite(ledA, HIGH);
delay(125);
digitalWrite(ledA, LOW);
delay(125);

digitalWrite(ledB, HIGH);
delay(125);
digitalWrite(ledB, LOW);
delay(125);

digitalWrite(ledC, HIGH);
delay(125);
digitalWrite(ledC, LOW);
delay(125);

digitalWrite(ledD, HIGH);
delay(125);
digitalWrite(ledD, LOW);
delay(125);
}