#include <Wire.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C layar(0x27, 16, 2);

const int pinTrigger = 7;
const int pinEcho = 8;

long waktu;
int distance;

void setup() {
  pinMode(pinTrigger, OUTPUT);
  pinMode(pinEcho, INPUT);
  layar.begin(16, 2);
  layar.home();
  layar.print("Jarak sebesar :");
  delay(10);
  Serial.begin(9600);
}

void loop() {
  digitalWrite(pinTrigger, LOW);
  delayMicroseconds(2);
  digitalWrite(pinTrigger, HIGH);
  delayMicroseconds(10);
  digitalWrite(pinTrigger, LOW);
  waktu = pulseIn(pinEcho, HIGH);
  distance = waktu * 0.0344 / 2;
  Serial.println(distance);
  layar.setCursor(0, 1);
  layar.print(distance);
  layar.print(" ");
  layar.setCursor(3, 1);
  layar.print("cm");
  delay(100);
}