Problem with my RTC module

Projects Programming
1

Hello, I need help to know what the problem is with my RTC (DS1307), when I upload my code, the serial monitor always displays the same date and time, the seconds are no longer advancing. I would like to know if it is a code problem or that the RTC no longer works. With my RTC, I use a 7-segment 4-digit display (+ TM1637) and a 24 neopixel ring from adafruit.

Here is my code:

#include <TM1637Display.h>
#include <Adafruit_NeoPixel.h>
#include <Wire.h>
#include "RTClib.h"

#define CLK 2
#define DIO 3

TM1637Display display = TM1637Display (CLK, DIO);
TM1637Display display_1 = TM1637Display ( 2, 3 ) ;
const uint8_t data [] = { 0xff , 0xff , 0xff , 0xff } ; 
const uint8_t blank [] = { 0x00 , 0x00 , 0x00 , 0x00 } ; 

Adafruit_NeoPixel pixels(24, 5, NEO_GRB + NEO_KHZ800);

RTC_DS1307 rtc;

void setup () {
  while (!Serial); 
  pixels.begin();
  pixels.show();
  Serial.begin(9600);
  display.clear();
  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  if (! rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
  }
}

void loop () {
    display.setBrightness(6);
    DateTime now = rtc.now();
    Serial.print(now.year(), DEC);
    Serial.print('/');
    Serial.print(now.month(), DEC);
    Serial.print('/');
    Serial.print(now.day(), DEC);
    Serial.print(' ');
    Serial.print(now.hour(), DEC);
    Serial.print(':');
    Serial.print(now.minute(), DEC);
    Serial.print(':');
    Serial.print(now.second(), DEC);
    Serial.println();
    int displaytime = (now.hour() * 100) + now.minute ();
    display.showNumberDecEx (displaytime, 0b11100000, true);
    for(int i=0; i<now.hour(); i++){
    pixels.setPixelColor(i, pixels.Color(255, 0, 0));
    pixels.show();
  }
 if (now.hour()==0){
    for(int r=0; r<24; r++){
    pixels.setPixelColor(r, pixels.Color(0, 0, 0));
    pixels.show();
    }
  }
}

Thank you in advance.

2

What was the printout from this?:

  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  if (! rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
  }