#include "RTClib.h"

RTC_DS1307 rtc;

void setup() {
  // put your setup code here, to run once:

  Serial.begin(115200);
  rtc.begin();

}

void loop() {
  // put your main code here, to run repeatedly:

  DateTime now = rtc.now();

  Serial.print(':');
  Serial.print(now.second(), DEC);
  Serial.println();

  
  Serial.println(now.unixtime());

  delay(3000);

}