#define TRIG_PIN 25  // Pin Trig sensor ultrasonik
#define ECHO_PIN 26  // Pin Echo sensor ultrasonik

void setup() {
  Serial.begin(115200);

  // Setup pin untuk sensor ultrasonik
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
}

void loop() {
  long duration, distance;

  // Memicu sensor ultrasonik
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);

  // Mengukur lama waktu pantulan
  duration = pulseIn(ECHO_PIN, HIGH);

  // Menghitung jarak (kecepatan suara 0.034 cm/us)
  distance = duration * 0.034 / 2;

  // Menampilkan jarak di Serial Monitor
  Serial.print("Jarak: ");
  Serial.print(distance);
  Serial.println(" cm");

  delay(1000); // Tunggu 1 detik sebelum membaca ulang
}