DS3231 Precision RTC Real Time Clock Memory Module For Arduino new original – KSH 300 at HIMASTORES Mombasa – best electronics in Kenya
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DS3231 Precision RTC Real Time Clock Memory Module For Arduino new original

SKU: HMJ773 Category: Modules
KSH 300.00
Out of Stock

Product Description

DS3231 Precision RTC Real Time Clock Memory Module

New Original High-Accuracy I2C RTC for Arduino

The DS3231 is the most accurate RTC module available, featuring a builtin temperaturecompensated crystal oscillator (TCXO). It maintains ±2ppm accuracy, keeping precise time across temperature changes for Arduino projects.

Extreme Accuracy ±2ppm over 40°C to +85°C range
Builtin TCXO Temperature compensation for stable timekeeping
Operating voltage is 2.3V to 5.5V - works with both 3.3V and 5V systems
Use standard RTClib library for easy integration
Do not exceed 5.5V on any pin

Technical Specifications

ParameterValue
Supply Voltage2.3V to 5.5V
Accuracy±2ppm (max)
Temperature Range-40°C to +85°C
I2C Interface2-Wire (400kHz max)
Memory256 Bytes EEPROM
Alarms2 programmable
Temperature Sensor±3°C accuracy
Time Format12/24 Hour

= Key Features =

+Extreme Accuracy - ±2ppm over full temperature range

+Builtin TCXO No external crystal needed

+Two Alarm Interrupts - Programmable for events

+Digital Temperature Sensor - Integrated sensing

+32.768kHz Output - Square wave for other devices

+Battery Backup - Maintains time during power loss

= Applications =

  1. High-precision data logging
  2. Professional time-stamping
  3. HVAC control systems
  4. Medical monitoring equipment
  5. GPS time synchronization
  6. Industrial automation
Most Accurate RTC - Beats DS1307 and PCF8563 significantly
No Temperature Drift - Stable across all environments

√ CR2032 battery holder included

√ I2C pull-up resistors onboard

√ Temperature sensing built-in

Connection Guide

Module to Arduino:

  • VCC: 3.3V or 5V
  • GND: Ground
  • SDA: A4 (Uno/Nano) / SDA pin
  • SCL: A5 (Uno/Nano) / SCL pin

Other boards:

  • Mega: SDAD20, SCLD21
  • ESP32: GPIO21 (SDA), GPIO22 (SCL)
  • 32.768kHz output: SQW pin
Use 4.7kΩ pull-up resistors on I2C lines
Connect 32kHz output for clock signals
32kHz output is 3.3V - use level shifting for 5V

Programming Instructions

Install RTClib library via Arduino IDE Library Manager:

Basic functions:

  • rtc.begin() - Initialize module
  • rtc.adjust() - Set time/date
  • rtc.now() - Read current time
  • rtc.setAlarm1() - Set alarm
  • rtc.setAlarm2() - Set second alarm

Time format:

  • DateTime(year, month, day, hour, min, sec)
  • Reading returns all date/time fields

Easy Integration - RTClib supports DS3231 fully

Precise Timekeeping - Always accurate

Loses only seconds per month
Used in professional equipment

Troubleshooting

Module not responding:

  • Check I2C connections
  • Verify power supply
  • Avoid loose wiring

Time drift:

  • Verify temperature compensation
  • Check battery voltage
  • Avoid extreme temperatures