//Program Menampilkan Jarak dengan Ultrasonic 
//By Adib Labib XI TEK 2
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

int trig = 18;
int echo = 5;
long durasi,jarak;
float suara = 0.034;

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.clear();
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  Serial.begin(9600);
  lcd.setCursor(0,0);
  lcd.print("PROJECT 4 LABOBS");
  lcd.setCursor(0,1);
  lcd.print("   ULTRASONIC   ");
  delay(2000); 
  lcd.clear();
  }

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

  durasi = pulseIn(echo, HIGH);
  jarak = durasi*suara/2;
  lcd.setCursor(0,0);
  lcd.print("JARAKNYA ADALAH:");
  lcd.setCursor(0,1);
  lcd.print(jarak);
  lcd.print("   CM   ");
}