#include <Arduino.h>
#include <uRTCLib.h>
#include <LiquidCrystal_I2C_Hangul.h> // библиотеки

uRTCLib rtc(0x68);
LiquidCrystal_I2C_Hangul lcd = LiquidCrystal_I2C_Hangul(0x27,16,2); 

char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
// день недели
void setup() {

  Serial.begin(9600);

  URTCLIB_WIRE.begin();
  lcd.init();
  lcd.backlight();

}

void loop() {
  rtc.refresh();

  lcd.setCursor(0, 0);
  lcd.print(rtc.day());
  lcd.print('/');
  lcd.print(rtc.month());
  lcd.print('/');
  lcd.print(rtc.year());

  lcd.print(" (");
  lcd.print(daysOfTheWeek[rtc.dayOfWeek()-1]);
  lcd.print(") ");
  lcd.setCursor(0, 1);
  lcd.print(rtc.hour());
  lcd.print(':');
  lcd.print(rtc.minute());
  lcd.print(':');
  if (rtc.second() < 10) { //писать 0 перед числами меньше 10
    lcd.print(0);
  }
  lcd.println(rtc.second());
  delay(1000);
}