Arduino LeoStick "Police Car"

PoliceCar

/**
 * Arduino LeoStick "Police Car"
 *
 * Written by Dave Hall - http://davehall.com.au
 *
 * Licensed under the terms of the WTFPL - http://sam.zoy.org/wtfpl/
 */

int SPEAKER = 11;
int LED_GREEN = 9;
int LED_BLUE = 10;
int LED_RED = 13;
int DELAY = 250;

void setup() {
  pinMode(SPEAKER, OUTPUT);
  pinMode(LED_GREEN, OUTPUT); // unused
  pinMode(LED_BLUE, OUTPUT); 
  pinMode(LED_RED, OUTPUT);
}

void loop() {
  analogWrite(SPEAKER, 175);
  digitalWrite(LED_RED, LOW);
  digitalWrite(LED_BLUE, HIGH);
  delay(DELAY);
  digitalWrite(LED_RED, HIGH);
  digitalWrite(LED_BLUE, LOW);
  delay(DELAY);
  analogWrite(SPEAKER, 125);
  digitalWrite(LED_RED, LOW);
  digitalWrite(LED_BLUE, HIGH);
  delay(DELAY);
  digitalWrite(LED_RED, HIGH);
  digitalWrite(LED_BLUE, LOW);
  delay(DELAY);
}