//Program menampilkan jarak dengan ultrasonic
//By Nabila Oktafiani 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 XITEK2");
 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  ");
}