/*
PIR Sensor Test

Wiring :
Arduino 8    -> PIR D
Arduino 5V   -> PIR +
Arduino GND  -> PIR -
Arduino 3    -> LED +
Arduino GND  -> Resistor -> LED -
Arduino 2    -> Buzzer +
Arduino GND  -> Buzzer -

    *** O-Tech ***
A Place You Can Trust
https://wa.me/201207738604
https://www.facebook.com/profile.php?id=61555112881938
https://www.youtube.com/@OTECHegypt
*/

#define pirPin 2
#define ledPin 3
#define buzzer 4
bool motionDetected = false;

void setup() {
  pinMode(pirPin, INPUT);
  pinMode(ledPin, OUTPUT);
  pinMode(buzzer, OUTPUT);
  Serial.begin(9600);
  Serial.println("PIR Motion Sensor Test by O-Tech");
}

void loop() {
  int motion = digitalRead(pirPin);
  if (motion == HIGH && !motionDetected) {
    motionDetected = true;
    digitalWrite(ledPin, HIGH);
    Serial.println("Motion Detected");
    int i;
    while(digitalRead(pirPin)){
      for(i=700;i<800;i+=2){
        tone(buzzer,i);
        delay(1);
      }
      for(i=800;i>700;i--){
        tone(buzzer,i);
        delay(1);
      }
    }
  }
  if (motion == LOW && motionDetected) {
    if (digitalRead(pirPin) == LOW) {
      motionDetected = false;
      digitalWrite(ledPin, LOW);
      noTone(buzzer);
    }
  }
}