#define ECHO_PIN 2 
#define TRIG_PIN 3 
float x=1.006;

void setup() {
Serial.begin(115200);
pinMode(TRIG_PIN, OUTPUT);
pinMode(ECHO_PIN, INPUT);
}

void loop() {
  // Generate ultrasonic signal
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, LOW);

  // Read ultrasonic signal
  int duration = pulseIn(ECHO_PIN, HIGH);
  float distance = duration * 0.034 * x / 2;
  Serial.print("jarak: ");
  Serial.print(distance);
  //serial.print(distance);
  Serial.println(" CM");
  delay(100);
}