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

int trig = 11;
int echo = 7;
int echo2 = 0;
int dist = 0;
int ldr = A3;

void setup() {
  lcd.init();
  lcd.backlight();
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  pinMode(ldr, INPUT);
  Serial.begin(9600);
}

void loop() {
  int ldr2 = analogRead(ldr);
  lcd.setCursor(0, 0);
  lcd.print("Masofa    ");
  lcd.print(dist);
  lcd.setCursor(0, 1);
  lcd.print("Yoruglik    ");
  lcd.print(ldr2);
  delay(500);
  lcd.clear();
  digitalWrite(trig, HIGH);
  delayMicroseconds(1000);
  digitalWrite(trig, LOW);
  echo2 = pulseIn(echo, HIGH);
  dist = echo2 / 57;
}