#define ECHO_PIN 2
#define TRIG_PIN 3
float X=1006;

void setup() {
  // put your setup code here, to run once:
Serial.begin(115200);
pinMode (TRIG_PIN, OUTPUT );
pinMode (ECHO_PIN, OUTPUT );
}

void loop() {
  // General Ultrasonic Signa
digitalWrite( TRIG_PIN, LOW);
delayMicroseconds(2);
digitalWrite( TRIG_PIN, HIGH);
delayMicroseconds (10);
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.println(distance);
Serial.println("C");
delay (100);
}