int led_pin = 5;
int pir_pin = 3;
int pir_qiymat;
int ldr_pin = A0;
int ldr_qiymat;
int buzzer_pin = 6;

void setup() {
  pinMode(led_pin, OUTPUT);
  pinMode(pir_pin, INPUT);
  pinMode(buzzer_pin, OUTPUT);

 Serial.begin(9600);

}
void loop() {
  ldr_qiymat = analogRead(ldr_pin);
  pir_qiymat = digitalRead(pir_pin);

  Serial.print( ldr_qiymat);
  Serial.print(" - ");
  Serial.println(pir_qiymat);

  if(ldr_qiymat > 500 && pir_qiymat == 1) {
    digitalWrite(led_pin, HIGH);
    tone(buzzer_pin, 2500);
  }
  else {
    digitalWrite(led_pin, LOW);
    noTone(buzzer_pin);
  }
}