int TrigPin=8;
int EchoPin=9;
int durasi ;
int jarak ;

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

}

void loop() {
  digitalWrite (TrigPin,LOW);
  delayMicroseconds(2);
  digitalWrite (TrigPin,HIGH);
  delayMicroseconds(10);
  digitalWrite(TrigPin,LOW);
  durasi=pulseIn(EchoPin,HIGH);
  jarak=durasi*0.034/2;
  delay(1000);
  Serial.print("jarak=");
  Serial.print(jarak);
  Serial.print(" cm");
  Serial.println();
  // put your main code here, to run repeatedly:

}