// Police Siren Effect with LED Lights for Arduino Uno

// Define LED pins
const int redLedPin = 11;
const int blueLedPin = 10;
const int whiteLedPin = 9;

// Define speaker pin
const int speakerPin = 8;

void setup() {
  // Set LED pins as outputs
  pinMode(redLedPin, OUTPUT);
  pinMode(blueLedPin, OUTPUT);
  pinMode(whiteLedPin, OUTPUT);

  // Set speaker pin as output
  pinMode(speakerPin, OUTPUT);
}

void loop() {
  // Police siren effect
  for (int i = 1000; i <= 2000; i += 500) {
    tone(speakerPin, i);
    digitalWrite(redLedPin, HIGH);
    delay(100);
    noTone(speakerPin);

    tone(speakerPin, i);
    digitalWrite(blueLedPin, HIGH);
    delay(200);
    noTone(speakerPin);

    tone(speakerPin, i);
    digitalWrite(whiteLedPin, HIGH);
    delay(100);
    noTone(speakerPin);

    digitalWrite(redLedPin, LOW);
    digitalWrite(blueLedPin, LOW);
    digitalWrite(whiteLedPin, LOW);
    delay(50);
  }

  // Pause before repeating the siren effect
  delay(500);
}