Task 11 - original Blink2 program

//Blink 2. Get two LEDs to blink.
/*
Blink2
Turns on a LED on for half a second, then off for half a second, repeatedly. It
also does the same to an off-board LED connected to pin 12 so that when one
LED is on the other is off.

The circuit:
* LED connected from digital pin 13 to ground via resistor.
* second LED connected from digital pin 12 to ground via resistor. I used 330
ohms.
* Note: On most Arduino boards, there is already an LED on the board
connected to pin 13.

Created 1 June 2005
By David Cuartielles. Adapted by Peter Brook
based on an orginal by H. Barragan for the Wiring i/o board

*/

int ledPin = 13; // LED connected to digital pin 13
int redLedPin = 12; // LED connected to digital pin 13
int del =500;

// The setup() method runs once, when the sketch starts
void setup()
{
// initialize the digital pin as an output:
pinMode(ledPin, OUTPUT);
pinMode(redLedPin, OUTPUT);
}

// the loop() method runs over and over again,
// as long as the Arduino has power
void loop()
{
digitalWrite(ledPin, HIGH); // set the LED on
digitalWrite(redLedPin, LOW); // set the LED on
delay(del); // wait for a second
digitalWrite(ledPin, LOW); // set the LED off
digitalWrite(redLedPin, HIGH); // set the LED off
delay(del); // wait for a second
}