//*****ULTRASONIK, menamai pin yang digunakan****************
#define pinecho 2
#define pintrig 15

void setup() {
  //*****SERIAL MONITOR, setting baud rate*******************
  Serial.begin(115200);

  //*****ULTRASONIK, setting pin yang digunakan**************
  pinMode(pinecho, INPUT);
  pinMode(pintrig, OUTPUT);
}

void loop() {
  //*****ULTRASONIK, membaca jarak***************************
  digitalWrite(pintrig, LOW);
  delayMicroseconds(2);
  digitalWrite(pintrig, HIGH);
  delayMicroseconds(10);
  digitalWrite(pintrig, LOW);
  int duration=pulseIn(pinecho, HIGH);
  float distance=duration*0.034/2;

  //*****SERIAL MONITOR, menampilkan data jarak**************
  Serial.print(distance);
  Serial.println("cm");
}