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HiLetgo 5pcs DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module for Arduino Without Battery

4.4 4.4 out of 5 stars 208 ratings
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Brand HiLetgo
Memory Storage Capacity 32 KB
Connectivity Technology I2C
Product Dimensions 1.5"L x 0.87"W x 0.55"H

About this item

  • HiLetgo DS3231 AT24C32 Clock Module Real Time Clock Module
  • Working voltage : 3.3 -. 5 .5 V
  • Clock chip: high-precision clock chip DS3231M
  • Memory chips:. AT24C32
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HiLetgo 5pcs DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module for Arduino Without Battery
HiLetgo 5pcs DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module for Arduino Without Battery
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Price$12.99$9.88$8.49$14.99$22.10$10.99
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Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
Get it as soon as Sunday, Mar 31
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Product Description

DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module for Arduino
Parameters:
1. Dimension: 38mm* 22mm * 14mm
2. Weight:. 8g
3. Working voltage : 3.3 -. 5 .5 V
4. Clock chip: high-precision clock chip DS3231
5. Clock accuracy within range :0-40 ¡æ, accuracy 2ppm, about 1 minute in error
6. Programmable square-wave output
7. Real-time clock, it can generate seconds, minutes, hours, day, date, month and year, and provide time until 2100, and with leap year compensation.
8. Internal chip temperature sensor comes with an accuracy of ¡À 3 ¡æ
9. Memory chips:. AT24C32 (storage capacity of 32K)
10. IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
11. IIC other devices can be cascaded, 24C32 address can be modified by a short circuit A0/A1/A2, the default address is 0x57

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HiLetgo 5pcs DS3231 AT24C32 Clock Module Real Time Clock Module IIC RTC Module for Arduino Without Battery


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Customer reviews

4.4 out of 5 stars
4.4 out of 5
208 global ratings

Customers say

Customers like the ease of use, quality, performance, accuracy, and value of the single board computer. For example, they mention that it's easy to get up and running, works well with Arduino and Raspberry Pi projects, and keeps the time very accurately. That said, opinions are mixed on battery life.

AI-generated from the text of customer reviews

8 customers mention6 positive2 negative

Customers like the accuracy of the single board computer. They mention it's easy to set up and runs, and keeps the time very accurately. Some say the clock itself is wonderful and exceptionally accurate.

"the clock itself is wonderful, and exceptionally accurate. be careful with the batteries though...." Read more

"...Accuracy is very good as one would expect from a temperature-compensated crystal oscillator (which is internal to the IC)...." Read more

"...The issue is keeping the time once set...." Read more

"...one of these modules in my smart car project and it is keeping the time very accurately even under the Texas Sun, stored under the dash!..." Read more

6 customers mention6 positive0 negative

Customers find the single board computer easy to use. They mention it's easy to get up and running, and the hookup is simple. They also appreciate the ease of library changes and the fact that the i2c protocol is simple to use on any Arduino.

"...No issues and very easy to use. These are a great value and highly recommend." Read more

"Easy to get up and running. Good accuracy." Read more

"...Hookup is EASY - i2c is a simple protocol to use on any Arduino (just look up the pins on your model) and RTClib will connect and use the unit very..." Read more

"These modules are easy to use and a real value at $1 per module...." Read more

4 customers mention4 positive0 negative

Customers are satisfied with the performance of the single board computer. They mention that it works well, has no issues, and is easy to use. Some say that the clock modules work well with Arduino and Raspberry Pi projects.

"These worked very well when adding real time clocks (RTC) to my projects. No issues and very easy to use...." Read more

"These clock modules work well with Arduino or Raspberry Pi projects, there are readily-available open source libraries for both...." Read more

"So far these work well using the I2C link to program/read these clock modules and no problem with time keeping...." Read more

"These RTC work nicely for custom built logging device using an Arduino microprocessor...." Read more

4 customers mention4 positive0 negative

Customers are satisfied with the quality of the product. They mention it's an excellent product, and a great clock module.

"...Reordered for new projects. These RTCs are great especially being able to adjust the drift..." Read more

"Great clock module. Be careful with battery...." Read more

"Good product..." Read more

"Excellent product...." Read more

4 customers mention4 positive0 negative

Customers appreciate the value of the single board computer. They say it has a real value at $1 per module and is very cheap compared to name brands.

"...No issues and very easy to use. These are a great value and highly recommend." Read more

"...Good value!" Read more

"These modules are easy to use and a real value at $1 per module...." Read more

"...After a few days, it shows no sign of drifting. Very cheap to compared to "name brands"." Read more

5 customers mention2 positive3 negative

Customers are mixed about the battery life of the single board computer. Some mention that it works well and has no problems with time or battery, while others say that it uses a ton of power and slowly kills the battery.

"...using the I2C link to program/read these clock modules and no problem with time keeping. So far no problems with the battery either...." Read more

"...This means there's really no point to that huge battery - the unit would do better using network time that would be adjusted every so often during..." Read more

"...multiple parts and carefully inserted my battery, it keeps time reasonably well and doesn't slowly destroy whatever battery I put in it...." Read more

"All five of these modules I received are bad, none will save the time on power down they all communicate over i2c but their main purpose is to save..." Read more

3 customers mention0 positive3 negative

Customers are dissatisfied with the modules of the single board computer. They mention that they are defective and not reliable.

"These are not reliable modules, but if you get lucky you will find one that keeps time reasonably well...." Read more

"...Not really happy with getting two defective modules but it's too late to go back to the seller." Read more

"...so I doubt that it is just my luck that 80 percent of the modules I received were faulty...." Read more

Last batch is garbage
1 Star
Last batch is garbage
Update Feb 2024: This last batch is ABSOLUTE GARBAGE.The clock outputs from 32,698 to 32,785Hz depending on unit, that is from -187s/day to +45s/day. The adjustment register can only do +/-12.5ppm or so, which translates to barely 1s/day.Checked two from a previous batch and they are spot on. I should have checked them when I got them...------------------Reordered for new projects. These RTCs are great especially being able to adjust the drift (not all libraries support, but the chip can do it, easy library change).
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Reviewed in the United States on September 22, 2019
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Top reviews from other countries

Translate all reviews to English
Client d'Amazon
4.0 out of 5 stars Excellent
Reviewed in France on July 31, 2017
DaveP
5.0 out of 5 stars useful clock module
Reviewed in the United Kingdom on August 1, 2016
Richard A Whetton
5.0 out of 5 stars Five Stars
Reviewed in the United Kingdom on May 17, 2017