DS3231 AT24C32 Precision RTC I2C Module with CR2032 Battery

Name: DS3231 AT24C32 Precision RTC I2C Module with CR2032 Battery
Brand: ShillehTek
SKU: NA041
Price: 5.99 USD
Availability: InStock

SKU NA041

$5.99 USD Shipping & tax calculated at checkout

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DS3231 AT24C32 precision RTC I2C module keeps accurate time/date with battery-backed real-time clock and EEPROM for Arduino, Raspberry Pi, ESP32, data logging, alarms, and home automation.

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Overview

Product Overview

The DS3231 AT24C32 Precision RTC I2C Module is a battery-backed real-time clock module that keeps accurate time and date for Arduino, Raspberry Pi, ESP32, and other microcontroller projects over the I2C interface. Built around the DS3231 RTC chip and paired with AT24C32 EEPROM, it provides reliable timekeeping even when main power is removed, with the included CR2032 battery maintaining the clock. Use this board for data loggers, alarms, clocks, timers, home automation, and IoT prototypes that need persistent timestamps and simple I2C integration.

Questions & answers

Frequently asked questions

Does this RTC module work with Raspberry Pi?

Yes. It communicates over the standard I2C interface, so it can be used with Raspberry Pi, Arduino, ESP32, and other microcontrollers that provide I2C support and compatible software libraries.

Is the RTC module ready to wire and use?

The module is sold ready for prototyping, with pre-soldered headers and an included CR2032 battery. Connect power, ground, SDA, and SCL, then use a DS3231-compatible RTC library to set and read the time.

What interface does the DS3231 AT24C32 module use?

It uses I2C for communication, sharing the bus between the DS3231 real-time clock and the AT24C32 EEPROM. In a typical hookup, the host connects to SDA and SCL plus power and ground.

Can this RTC module timestamp data logger readings?

Yes. The battery-backed DS3231 keeps date and time when main power is removed, making it useful for data loggers that need persistent timestamps across resets, outages, or battery swaps.

Why is the RTC module losing time?

If the clock resets or loses time, first check that the CR2032 battery is installed correctly and not depleted. Also verify I2C wiring, power, ground, and that the software initializes the DS3231 before reading it.

Have other questions?

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What's included