Ks0130 keyestudio EASY plug DS3231 Clock Module

EASY plug DS3231 Clock Module

Introduction

The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, and maintains accurate timekeeping when main power to the device is interrupted. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line.
Note: this module needs to be used together with EASY plug control board.

Specification

• Interface: Easy plug
• Temperature range: -40 to +85; Timing accuracy : ± 5ppm (±0.432 seconds / day)
• Device package and function compatible with DS3231
• Two calendar clock
• Output: 1Hz and 32.768kHz
• Reset output and Input Debounce of Pushbutton
• High speed (400kHz), I2C serial bus
• Supply voltage: +3.3V to +5.5V
• Digital temperature sensor with a precision of±3℃
• Working temperature: -40 ~ ℃ to +85 ~ ℃
• 16 pins Small Outline Package (300mil)
• Size: 38*20mm
• Weight: 6g

Connection Diagram

Sample Code

#include <Wire.h>   // place file “Wire.h” under the directory “libraries” of Arduino
#include "DS3231.h"  // place file “DS3231.h” under the directory “libraries” of Arduino
DS3231 RTC; //Create the DS3231 object
char weekDay[][4] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
//year, month, date, hour, min, sec and week-day(starts from 0 and goes to 6)
//writing any non-existent time-data may interfere with normal operation of the RTC.
//Take care of week-day also.
DateTime dt(2015, 12, 16, 10,25, 33, 3);//open the series port and you can check time here or make a change to the time as needed.
void setup () 
{   Serial.begin(57600);//set baud rate to 57600
    Wire.begin();
    RTC.begin();
    RTC.adjust(dt); //Adjust date-time as defined 'dt' above 
}
void loop () 
{   DateTime now = RTC.now(); //get the current date-time
    Serial.print(now.year(), DEC);
    Serial.print('/');
    Serial.print(now.month(), DEC);
    Serial.print('/');
    Serial.print(now.date(), DEC);
    Serial.print(' ');
    Serial.print(now.hour(), DEC);
    Serial.print(':');
    Serial.print(now.minute(), DEC);
    Serial.print(':');
    Serial.print(now.second(), DEC);
    Serial.println();
    Serial.print(weekDay[now.dayOfWeek()]);
    Serial.println();
    delay(1000);
}

Resources

Datasheet

http://www.keyestudio.com/files/index/download/id/1464242712/

Buy from

http://www.keyestudio.com/keyestudio-easy-plug-ds3231-clock-module-for-arduino.html