//Program Ultrasonic
//By Nazwa Salsabila Kinanti
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
int trig = 4;
int echo = 0;
long durasi,jarak;
float suara = 0.034;

void setup() {
 lcd.init();
 lcd.backlight();
 lcd.clear();
 lcd.setCursor(0,0);
 lcd.print("Project XI TEK 1");
 lcd.setCursor(0,1);
 lcd.print("Ultrasonic");
 delay(2000);
 lcd.clear();

 pinMode(trig, OUTPUT);
 pinMode(echo, OUTPUT);
}

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+1);
  lcd.print(" cm ");
  delay(100);
}