//program ultrasonic sensor
//By Zakki Trianggono XI TEI 1
#include <LiquidCrystal_I2C.h>
#include <Wire.h>

LiquidCrystal_I2C lcd(0x27,16,2);
int trig = 13;
int echo = 12;
long jarak,durasi;

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(3,0);
  lcd.print("WELCOME TO");
  lcd.setCursor(3,1);
  lcd.print("MY PROJECT");
  delay(2000);
  lcd.clear();
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
}

void loop() {
  digitalWrite(trig, HIGH);
  delayMicroseconds(5);
  digitalWrite(trig, LOW);
  delayMicroseconds(5);

  durasi = pulseIn(echo, HIGH);
  jarak = durasi/58.2;

  lcd.setCursor(0,0);
  lcd.print("JARAK :");
  lcd.print(" ");
  lcd.print(jarak);
  lcd.print(" cm ");
}