/*
Title: AltBlink.
Blink: This example makes the LED at pin 13 and the LED at pin 8 altenate between blinking while the other is off.
This example code is in the public domain.
 */
// Constants: Constants won’t change. They’re used here to set the pin numbers: 
const int ledPin = 13;    	// constant ledPin assigned to pin 13
const int led2 = 8;          // constant led2 assigned to pin 8
// Variables: Variables will change. They’re used do assign variable names:
                              // there are no variables in this example
// Setup: The setup routine runs once when you start or press reset:
void setup() {			// put your setup code here, to run once
   pinMode(ledPin, OUTPUT);  	// initialize the LED pin as an output
   pinMode(led2, OUTPUT);     // initialize the LED pin as an output
}
// Loop: The loop routine runs over and over again forever:
void loop() {			// put your main code here, to run repeatedly: 
  digitalWrite(ledPin, HIGH);	// turn the LED on (HIGH is the voltage level)
  digitalWrite(led2, LOW);    // turn the LED off (LOW is the voltage level)
  delay(1000);               	// wait for one second
  digitalWrite(ledPin, LOW); 	// turn the LED off by making the voltage LOW
  digitalWrite(led2, HIGH);   // turn the LED on by making the voltage HIGH
  delay(1000);               	// wait for one second
}