DS1307RTC Clock Module

  DS1307 is an I2C real-time clock chip (RTC), it is a low-power, full BCD code clock calendar real-time clock chip with 56 bytes of non-destructive RAM, the address and data are transmitted through a two-wire bidirectional serial bus, the chip can provide seconds, minutes, hours and other information, and the number of days in a month can be automatically adjusted, and there is leap year compensation. The AM/PM flag bit determines whether the clock operates in 24-hour or 12-hour mode, and the chip has a built-in power-sensing circuit with power-down detection and battery switching.

Module Source

Purchase Link:
https://item.taobao.com/item.htm?spm=a1z10.3-c-s.w4002-24706531953.10.2b4a6a4bH7IysA&id=522553351753
Baidu Netdisk Download Link: https://pan.baidu.com/s/1BcLbfV5bCjKdAS4PL3BRnA
Password: 6uq7

Specifications

Operating Voltage:4.5-5.5V
Operating Current:1.5mA
Module Size: 27mm28mm8.4mm
Control Method:IIC
Number of Pins:4 Pin (2.54mm pitch)
Description:with battery, with power failure detection and battery switching function

Hardware Connection

• VCC connects to the 5V of the development board.
• GND connects to the GND of the development board.
• SDA (Serial Data Line) connects to A4 (or SDA port) of the development board.
• SCL (Serial Clock Line) connects to A5 (or SCL port) of the development board.

Usage Method

Install Library

Open the Arduino IDE, go to Tools -> Manage Libraries, search forRTClib, and then install it. This will allow you to easily work with the DS1307 RTC module.

Enter the code:

/******************************************************************************
  * Test Hardware: LCSC ColorEasyDuino Development Board
  * Version Number: V1.0
  * Modified By: www.lckfb.com
  * Modification Date: April 11, 2024
  * Function Overview:
  *****************************************************************************
  * Open-source development board hardware and software information and related projects hardware and software information on official website
  * Development board official website: www.lckfb.com
  * Technical support resident forum, any technical problems are welcome at any time to exchange learning
  * LCSC Forum: club.szlcsc.com
  * Follow our Bilibili account: [立创开发板], stay toned to our latest news!
  * We focus on cultivating Chinese engineers rather than profiting from board sales.
******************************************************************************/
#include <Wire.h>
#include "RTClib.h"

RTC_DS1307 rtc;

void setup() {
  // 开始串口通讯以便调试
  Serial.begin(9600);

  // 检查Wire库是否启动而且DS1307是否在运行
  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    while (1);
  }

  // 检查DS1307是否正在运行
  if (!rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    // 设置日期和时间。以下日期/时间是编译这个草稿的时间
    // 注意rtc.adjust接收一个DateTime对象，可以按一下方式指定日期:
    // DateTime(year, month, day, hour, min, sec)
    rtc.adjust(DateTime(__DATE__, __TIME__));
  }
}

void loop() {
  DateTime now = rtc.now(); // 获取当前的日期及时间

  // 打印日期及时间
  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();

  // 打印结束符以便数据以合适的方式显示
  Serial.println();

  // 延时一些时间，以便阅读
  delay(1000);
}

Usage Testing