#define echoPin 3 
#define trigPin 2 

void setup() {
  // put your setup code here, to run once:
  pinMode(echoPin, INPUT); 
  pinMode(trigPin, OUTPUT); 
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(trigPin, LOW); 
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH); 
  delayMicroseconds(10); 
  digitalWrite(trigPin, LOW); 
  int durasiPantulan = pulseIn(echoPin, HIGH); 
  float jarak = durasiPantulan * 0.034 / 2; 
  float jarakM = jarak / 100;

  Serial.print("Jarak : "); 
  Serial.print(jarak);
  Serial.print("cm ");
  Serial.print(jarakM);
  Serial.println("m");
  
}