// Nama Kelompok : Puji Agus S.   (06)
  //               : Umar Zainur A. (26)
  // Kelas         : XI-TKJ 3

#include <Arduino.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int trigPin = 13;
const int echoPin = 12;

long duration;
int distance;

void setup () {
  lcd.init();
  lcd.begin(16, 2);
  lcd.backlight();  

  Serial.begin(9600);

  pinMode (trigPin, OUTPUT);
  pinMode (echoPin, INPUT);
}

void loop() {
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);

duration = pulseIn(echoPin, HIGH); 

distance = duration * 0.034 / 2;

Serial.print("jarak : ");
Serial.print(distance);
Serial.println(" cm");

lcd.clear();
lcd.setCursor(0,0);
lcd.print(" jarak :");
lcd.print(distance);
lcd.print("cm");
delay(500);
}