#include <Wire.h>
#include <RTClib.h>
RTC_DS1307 myrtc;
DateTime mynow;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  Wire.begin();
  myrtc.begin();
  pinMode(2,OUTPUT);
  pinMode(4,OUTPUT);
  
}

void loop() {
  // put your main code here, to run repeatedly:
  unsigned int thn;
  byte bln, tgl;
  mynow = myrtc.now();
  Serial.print(mynow.year());
  Serial.print("/");
  Serial.print(mynow.month());
  Serial.print("/");
  Serial.print(mynow.day());
  Serial.print("-");
  Serial.print(mynow.hour());
  Serial.print(":");
  Serial.print(mynow.minute());
  Serial.print(":");
  Serial.print(mynow.second());
  Serial.print("  ");
  delay(500); // this speeds up the simulation

  if (mynow.second() >= 30)
  {
    digitalWrite(2,HIGH);
    digitalWrite(4,LOW);
    delay(10);
  }
  else if (mynow.second() < 30)
  {
    digitalWrite(2,LOW);
    digitalWrite(4,HIGH);
    delay(10);
  }
  else
  {
    digitalWrite(2,LOW);
    digitalWrite(4,LOW);
    delay(10);
  }
}