---
product_id: 133609009
title: "Youmile 5 Pack DIY DS3231 Precision RTC Clock Memory Module for Arduino Raspberry Pi"
brand: "youmile"
price: "C$123"
currency: NIO
in_stock: false
reviews_count: 9
url: https://www.desertcart.ni/products/133609009-youmile-5-pack-diy-ds3231-precision-rtc-clock-memory-module
store_origin: NI
region: Nicaragua
---

# No Batteries Needed Precision Timing Wide Temp Range Youmile 5 Pack DIY DS3231 Precision RTC Clock Memory Module for Arduino Raspberry Pi

**Brand:** youmile
**Price:** C$123
**Availability:** ❌ Out of Stock

## Summary

> ⏰ Time is on your side with Youmile!

## Quick Answers

- **What is this?** Youmile 5 Pack DIY DS3231 Precision RTC Clock Memory Module for Arduino Raspberry Pi by youmile
- **How much does it cost?** C$123 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/133609009-youmile-5-pack-diy-ds3231-precision-rtc-clock-memory-module)

## Best For

- youmile enthusiasts

## Why This Product

- Trusted youmile brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Precision:** Maintain ± 5ppm accuracy for flawless timekeeping.
- • **Lightweight & Compact:** Weighs only 60g, perfect for any DIY project.
- • **Versatile Compatibility:** Seamlessly integrates with both 3.3V and 5V systems.
- • **All-in-One Clock Functions:** Track seconds, minutes, hours, and more until 2100.
- • **Robust Temperature Resilience:** Operates flawlessly from -40°C to +85°C.

## Overview

The Youmile 5 Pack DIY DS3231 Precision RTC Clock Memory Module is a versatile and reliable timing solution for Arduino and Raspberry Pi enthusiasts. With a temperature range of -40°C to +85°C and an accuracy of ± 5ppm, this module ensures precise timekeeping for all your projects, without the need for batteries.

## Description

Feature:  1. Within -40 ° C to +85 ° C temperature range, timing accuracy is maintained at ± 5ppm (± 0.432 sec / day). 2. Provide battery backup for continuous timing. 3. Low-power. 4. Device package and function compatible with the DS3231. 5. Complete clock functions include seconds, minutes, hours, day, date, month and year timing, and provide valid to 2100. 6. Two calendar alarm. 7. 1Hz and 32.768kHz output. 8. Reset button and button input. 9. High-speed (400kHz) I2C serial bus. 10. +2.3 V to +5.5 V supply voltage. 11. ±3°C accuracy digital temperature sensor. 12. -40°C to +85°C operating temperature range. 13. 16-pin SO (300mil) package  Package included:  5 x DS3231 Clock Module

## Features

- This board can be used with Arduino board
- Module itself can adapt 3.3V and 5V systems without level conversion.
- Within -40 ° C to +85 ° C temperature range, timing accuracy is maintained at ± 5ppm (± 0.432 sec / day).
- Device package and function compatible with the DS3231.
- Complete clock functions include seconds, minutes, hours, day, date, month and year timing, and provide valid to 2100.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Youmile |
| Part number | BG-YM-938038 |
| Item Weight | 60 g |
| Package Dimensions | 9 x 6.8 x 1.5 cm; 60 Grams |
| Item model number | BG-YM-938038 |
| Batteries included? | No |
| Batteries Required? | No |

## Images

![Youmile 5 Pack DIY DS3231 Precision RTC Clock Memory Module for Arduino Raspberry Pi - Image 1](https://m.media-amazon.com/images/I/61siyryEhcL.jpg)
![Youmile 5 Pack DIY DS3231 Precision RTC Clock Memory Module for Arduino Raspberry Pi - Image 2](https://m.media-amazon.com/images/I/614-HPQfkmL.jpg)
![Youmile 5 Pack DIY DS3231 Precision RTC Clock Memory Module for Arduino Raspberry Pi - Image 3](https://m.media-amazon.com/images/I/61uMsK36n1L.jpg)
![Youmile 5 Pack DIY DS3231 Precision RTC Clock Memory Module for Arduino Raspberry Pi - Image 4](https://m.media-amazon.com/images/I/61HejDbBnDL.jpg)
![Youmile 5 Pack DIY DS3231 Precision RTC Clock Memory Module for Arduino Raspberry Pi - Image 5](https://m.media-amazon.com/images/I/61oIh0VAFHL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Take a while to arrive but perfect for the job.
  

*by G***S on Reviewed in the United Kingdom on 18 July 2020*

Does what it says on the tin, minimal footprint and the five pack wasn't much more than a single one sourced elsewhere.One problem - not specific to this type - is that they interfere with the internal fan on many of the actively cooled cases available for the Pi 4. A short ribbon cable e.g. five-conductor Dupont male/female gets around this provided its attached firmly elsewhere in the case to avoid shorts.Getting Raspian to use the thing is a different matter, especially given all the bad advice online.[slightly revised instructions 2020-11-08]FYI On Buster, 1) use raspi-config to enable the I2C bus, 2) add the line "dtoverlay=i2c-rtc,ds3231" to the "[all]" section at the end of "/boot/config.txt", 3) comment out the exit on check for systemd from "/lib/udev/hwclock-set".1 & 2 add the RTC to the device-tree causing the 'rtc_ds1307' module to be loaded automatically which creates "/dev/rtc0" and "/dev/rtc". Raspian will now do everything other than read it at start-up which is done by 3. Item 3 isn't a quality solution as it doesn't run early enough in the boot process so you need to keep the 'fake-hwclock' apt package installed to ensure the clock is sane early enough to prevent time-consuming filesystem checks and spurious timestamps. I've yet to find the 'correct' way of getting this done from the RTC hardware.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Very impressive!
  

*by P***N on Reviewed in the United Kingdom on 27 August 2019*

These are some of the best RTC modules I have come across.  They come complete with backup battery, are very small and neat and five out of five worked first time out of the bag.  Although intended for RasPi, they work perfectly with ESP modules and, presumably, with Arduino boards.  Excellent value.  I will buy more.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great little RTC modules
  

*by D***Y on Reviewed in the United Kingdom on 6 September 2019*

I bought these for use with Arduino and they are perfect!  They come with a built in backup battery.  The temperature sensor does seem accurate.  They are tiny and seem to be well made.

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-01-23*