//sava mega

const int led =19;
const int pir =21;
const int buzzer =18;

void setup() {
pinMode(led,OUTPUT);
pinMode(pir,INPUT);
pinMode(buzzer,OUTPUT);
Serial.begin(9600);
Serial.println("Hello,ESP32");
}

void loop() {
const int IP=digitalRead(pir);
Serial.println(IP);
delay(100);
if(IP==1){
digitalWrite(led,HIGH);
delay(1000);
tone(buzzer,1000);
}
else{
  digitalWrite(led,LOW);
  delay(1000);
  noTone(buzzer);

}
}