int trig = 15;
int echo = 4;
int ir = 14;
int buzzer = 16;

void setup() {
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(ir, INPUT);
  pinMode(buzzer, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  digitalWrite(trig, LOW);
  delayMicroseconds(2);
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);

  float duration = pulseIn(echo, HIGH);
  duration = duration / 2;
  float distance = (0.034) * duration;
  Serial.println(distance);

  int g = digitalRead(ir);
  Serial.println(g);

  if (distance < 100 || g == 1) {
    Serial.println("object detected");
    digitalWrite(buzzer, HIGH);
  } else {
    Serial.println("no object detected");
    digitalWrite(buzzer, LOW);
  }

  delay(100);  // Adding a small delay for stability
}