#include <Servo.h>
 
const int pirPin1 = 2;
const int pirPin2 = 3;
const int pirPin3 = 4;
const int pirPin4 = 5;
const int pirPin5 = 6;
const int buzzerPin = 7;
const int switchPin = 8;
const int whiteLEDPin = 9;
const int redLEDPin = 10;
const int greenLEDPin = 11;
const int blueLEDPin = 12;
 
Servo servo1;
Servo servo2;
Servo servo3;
Servo servo4;
 
bool systemOn = false;
 
void setup() {
  pinMode(pirPin1, INPUT);
  pinMode(pirPin2, INPUT);
  pinMode(pirPin3, INPUT);
  pinMode(pirPin4, INPUT);
  pinMode(pirPin5, INPUT);
  pinMode(buzzerPin, OUTPUT);
  pinMode(switchPin, INPUT_PULLUP);
  pinMode(whiteLEDPin, OUTPUT);
  pinMode(redLEDPin, OUTPUT);
  pinMode(greenLEDPin, OUTPUT);
  pinMode(blueLEDPin, OUTPUT);
 
  servo1.attach(13);
  servo2.attach(14);
  servo3.attach(15);
  servo4.attach(16);
 
  digitalWrite(whiteLEDPin, LOW);
  digitalWrite(redLEDPin, LOW);
  digitalWrite(greenLEDPin, LOW);
  digitalWrite(blueLEDPin, LOW);

  servo1.write(90);
  servo2.write(90);
  servo3.write(90);
  servo4.write(90);
}
 
void loop() {
  if (digitalRead(switchPin) == LOW) {
    systemOn = !systemOn;
    delay(500); // debounce delay
  }
 
  if (systemOn) {
    if (digitalRead(pirPin1) == HIGH) {
      servo1.write(180);
      digitalWrite(whiteLEDPin, HIGH);
      delay(1000);
      digitalWrite(whiteLEDPin, LOW);
      servo1.write(90);
    } else if (digitalRead(pirPin2) == HIGH) {
      servo2.write(180);
      digitalWrite(redLEDPin, HIGH);
      delay(1000);
      digitalWrite(redLEDPin, LOW);
      servo2.write(90);
    } else if (digitalRead(pirPin3) == HIGH) {
      servo3.write(180);
      digitalWrite(greenLEDPin, HIGH);
      delay(1000);
      digitalWrite(greenLEDPin, LOW);
      servo3.write(90);
    } else if (digitalRead(pirPin4) == HIGH) {
      servo4.write(180);
      digitalWrite(blueLEDPin, HIGH);
      delay(1000);
      digitalWrite(blueLEDPin, LOW);
      servo4.write(90);
    } else if (digitalRead(pirPin5) == HIGH) {
      buzzOnce();
      digitalWrite(whiteLEDPin, HIGH);
      digitalWrite(redLEDPin, HIGH);
      digitalWrite(greenLEDPin, HIGH);
      digitalWrite(blueLEDPin, HIGH);
      delay(3000);
      digitalWrite(whiteLEDPin, LOW);
      digitalWrite(redLEDPin, LOW);
      digitalWrite(greenLEDPin, LOW);
      digitalWrite(blueLEDPin, LOW);
    }
  }
}
 
void buzzOnce() {
  digitalWrite(buzzerPin, HIGH);
  delay(1000);
  digitalWrite(buzzerPin, LOW);
}