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Free shipping! Keyestudio DS3231 High precision I2C real time Clock Module for Arduino

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  • Description
  • Reviews(23)

 

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Introduction

 

DS3231 is equipped with integrated TCXO and crystal, which makes it a cost-effective I2C real time clock with high precision. The device carries a battery input, so if you disconnect the main power supply, it can still maintain accurate timing. The integrated oscillator ensures the long-term accuracy of the device and reduces the number of components. DS3231 provides both commercial and industrial temperature range and supports 16 pins small-outline package (300mil). The module itself can adapt to the system of 3.3V and 5V without level switch, which is quite convenient!

 

 
Specification
  • Temperature range: -40 to +85; Timing accuracy : ± 5ppm (±0.432 seconds / day)
  • Provide battery backup for continuous timing
  • Low power consumption
  • Device package and function compatible with DS3231
  • Complete clock calendar function contains seconds and minutes, hour, week, date, month, and year timing and provides leap year compensation until 2100.
  • 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)
Sample code:
#include <Wire.h>
#include "DS3231.h"
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(2011, 11, 10, 15, 18, 0, 5);//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);
}
 
See product video: https://youtu.be/pganNMCNp2g

 

 

Average rating: 4.0 based on 23 reviews
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