class HCSR04 {
  private:
  byte _triggerPin;
  byte _echoPin;
  long _duration;
  int _distance;

  public:
  HCSR04(byte triggerPin, byte echoPin){
    _triggerPin = triggerPin;
    _echoPin = echoPin;
  }
  void mulai(){
    pinMode(_triggerPin, OUTPUT);
    pinMode(_echoPin, INPUT);
  }
  int bacaJarak(){
    digitalWrite(_triggerPin, LOW);
    delayMicroseconds(2);
    digitalWrite(_triggerPin, HIGH);
    delayMicroseconds(10);
    digitalWrite(_triggerPin, LOW);

    _duration = pulseIn(_echoPin, HIGH);
    _distance = _duration / 58;
    return _distance;
  }

};

#define triggerPin 12
#define echoPin 14

HCSR04 ultrasonic(triggerPin, echoPin);

void setup() {
  Serial.begin(9600);
  ultrasonic.mulai();
}

void loop() {
  int jarak = ultrasonic.bacaJarak();
  Serial.print("Jarak: ");
  Serial.print(jarak);
  Serial.println(" Cm");
  delay(500);
}