// Program Menampilkan jarak dengan ultrasonic/
// Muhammad Abi Rafdi
// 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);
lcd.setCursor (0,0);
lcd.print("Project 4 XI TEK 2");
lcd.setCursor (0,1);
lcd.print ("   ULTRASONIC  ");
delay(2000);
lcd.clear ();
lcd.setCursor(0,0);
lcd.print("Mendeteksi Jarak");
lcd.setCursor (6,1);
lcd.print("....");
delay(2000);
lcd.clear();
}


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

 durasi = pulseln(echo,HIGH);
 jarak = (durasi*suara)/2;

 lcd.setCursor(0,0);
 lcd.print("jarak yaitu");
 lcd.setCursor(7,0);
 lcd.print (jarak);
 lcd.print("  cm  ");
}