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Real Time Clock Module (DS1307) V1.1 (SKU:DFR0151)
Contents
1 Introduction
2 Specification
3 Application
4 Tutorial
4.1 Connection diagram
4.2 Sample Code
4.3 Result
5 Trouble shooting
Introduction
The DS1307 Real Time Clock developed by one of our designers: Waiman. The module comes fully
assembled and pre-programmed with the current time (ok, so it's our current time - MST). The
included Lithium coin cell battery (CR1225 41mAh) will run the module for a minimum of 9 years (17
years typical) without external 5V power. The DS1307 is accessed via the I2C protocol.
Except the DS1307 real time clock, the module also integrate the I2C EEPROM chip(24C32) and the
DS18B20 sensor interface. The I2C EEPROM makes it possible to save the sensor data easily
without spending too much microcontroller source. And the DS18B20 interface with the pull-up
resistor embeded will be helpful to extend temperature monitoring feature for your project.
Specification
Working voltage: 5v
Two wire I2C interface
Hour : Minutes : Seconds AM/PM
Arrow.com.
Downloaded from
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Summary of Contents for DFRobot DS1307
- Page 1 5 Trouble shooting Introduction The DS1307 Real Time Clock developed by one of our designers: Waiman. The module comes fully assembled and pre-programmed with the current time (ok, so it's our current time - MST). The included Lithium coin cell battery (CR1225 41mAh) will run the module for a minimum of 9 years (17 years typical) without external 5V power.
- Page 2 Dimensions: 28mm x 25mm x 8mm Application Real time monitoring system Timer Tutorial Connection diagram Wiring instruction GND——GND VCC——5V SDA——A4 SCL——A5 DS——D2 Sample Code Please download and install the Arduino library first. how to install libary http://www.dfrobot.com/image/data/DFR0151/V1.1/Arduino%20library.zip https://www.arduino.cc/en/Guide/Libraries#.UxU8mdzF9H0 Arrow.com. Arrow.com. Downloaded from Downloaded from...
- Page 3 #include <Wire.h> #include <DS1307.h> about set time: format: year,month,day,week,hour,min,sec example: 14,03,25,02,13,55,10 2014.03.25 tuesday 13:55:10 String comdata = ""; int mark=0; //store the current time data int rtc[7]; //store the set time data byte rr[7]; //light pin int ledPin = //initial light void setup() DDRC |= _BV(2) | _BV(3);...
- Page 4 RTC.set(DS1307_DATE, 12); RTC.set(DS1307_MTH, 2); RTC.set(DS1307_YR, 12); //start rtc time RTC.start(); //RTC.SetOutput(LOW); //RTC.SetOutput(HIGH); //RTC.SetOutput(DS1307_SQW1HZ); //RTC.SetOutput(DS1307_SQW4KHZ); //RTC.SetOutput(DS1307_SQW8KHZ); RTC.SetOutput(DS1307_SQW32KHZ); void loop() int i; //get current time RTC.get(rtc, true); //print current time format : year month day week hour min sec for (i = 0; i < 7; i++) Serial.print(rtc[i]);...
- Page 5 while (Serial.available() > 0) comdata += char(Serial.read()); delay(2); mark = 1; //if data is all collected,then parse it if (mark == 1) Serial.println(comdata); Serial.println(comdata.length()); //parse data for (int i = 0; i < comdata.length() ; i++) //if the byte is ',' jump it,and parse next value if (comdata[i] == ',') j++;...
- Page 6 = 0; Result Trouble shooting Thank the guy to share this great way to update DS1307 clock through computer, in this way, you could get the precise time. Guide Link http://www.lucadentella.it/en/2013/11/27/rtcsetup/ Download library https://github.com/adafruit/RTClib Download sketch & pc_software https://github.com/lucadentella/RTCSetup More question and cool idea,visit DFRobot Forum ...
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