#include <Wire.h>
#include <LiquidCrystal_I2C.h>

float trigPin = 10;
float echoPin = 11;

LiquidCrystal_I2C lcd(0x27,16,2);

void setup() {
  Serial.begin(9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  lcd.init();
}

void loop() {
  lcd.backlight();

  int duration, distance;
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);
  distance = (duration/2) /29,4117647;

  lcd.setCursor(0,0);
  lcd.print("Jarak Benda = ");
  lcd.setCursor(0,1);
  lcd.print("= ");
  lcd.print(distance);
  lcd.print(" cm");
  delay(1000);
}