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JY-MCU mini_RTCpro DS3231 Arduino Compatible Precision Clock Module w/ Temperature AT24CXX 32K I2C EEPROM memory / for AVR PIC 51 ARM ↓ details & specifications
$3.62
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$3.34
$3.22
Electronic Components
Architecture Arduino
PCB Size 34 * 15 mm
Signaling Type I2C
Power & Batteries
Batteries Included Yes
Battery Form Factor CR927
Package
Package Type OEM
Dimensions us | metric
Depth 2 mm
Height 34 mm
Width 15 mm
Product Weight 3.2 g
FastTech
SKU 1174102
DATE LISTED 1/1/2013
Details:
  • To use DS3231 high-precision real-time clock chip (IIC interface rate 400KHz)
  • Set aside AT24Cxx IIC interface EEPROM memory interface, such as the need to own welding
  • Chip integrated internal precision 32.768KHz TCXO error within the range of 0 ° C to 40 ° C 2ppm, the annual error of about 1 minute
  • Chip internal temperature sensor accuracy 3 ° C, resolution of 0.5 ° C to measure the ambient temperature
  • Welding CR927 non-rechargeable 3V battery
  • The power supply terminal to join the anti-reverse diode reverse power burn circuit is not energized
  • Set the power indicator
  • Leads SQW / INT and 32KHz square wave output interface, can output different frequency square wave output alarm interrupt
  • Can be cascaded to other the IIC devices, welding 6P bend the pins
Commonly Asked Questions:

Q1. Why are these called "Arduino Compatible"?
A1. The Arduino group demanded us to remove their logos and rename these products so that they do not lead customers to believe they are the same units sold by Arduino.
 
Q2. Are these real Arduino's, then?
A2. We cannot answer that question without starting a war :(. Officially, the answer is we do not know.
 
Q3. Are these 100% compatible with the "normal" Arudino's?
A3. Yes, they really are completely compatible with "normal" Arduino's. Build quality looks the same and everything (studio, library, tools, etc) just works. Just read the reviews here, here, here, and here.
 
Q4. What if I'm still concerned about the missing logos and about this being named as "Arduino Compatible"?
A4. If you're still in doubt, please buy from Arduino's official dealers. Yes they are more expensive, but if you're still worried we'd rather not take your order. We do not make these afterall and we are providing all the information we know. Don't kill the messenger.
Questions?

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This item is covered by FastTech's Standard Return Policy:
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Return for refund within: 45 days (details)
Return for replacement within: 6 months (details)

No restocking fee. Shipping charges may apply if returns are not results of FastTech's error.

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DmitryL
Member

VERIFIED OWNER
  • JoinedSep 2014
  • Posts 33
  • Reviews 30
  • Kudos8
Overall
› Quality
› Value
PROS
Great module
I use it for accurate external interrupts.
Reviewed on 3/4/2015 Was this review helpful to you? Yes / No

more_hawk
Member

VERIFIED OWNER
  • JoinedJan 2014
  • Posts 7
  • Reviews 17
  • Kudos0
Overall
› Quality
› Value
PROS
found libraries easily online small size communicates easily with arduino compensates for temp
CONS
none
it just works, seems to keep accurate time, would recommend
Reviewed on 2/11/2015 Was this review helpful to you? Yes / No

ptjaPL
Member

VERIFIED OWNER
  • JoinedFeb 2013
  • Posts 13
  • Reviews 3
  • Kudos0
Overall
› Quality
› Value
1 of 1 people found the following review helpful
PROS
Works as expected. It also can measure temperature.
CONS
None so far.
I bought https://www.fasttech.com/p/1012004 first, but it was wasting the money. This one is much better. Library is easy to find (I used GPL DS3231RTC library by Michael Margolis and Wagner Sartori ... (read full review)
Reviewed on 9/30/2014 Was this review helpful to you? Yes / No

wyvern
Member

VERIFIED OWNER
  • JoinedFeb 2013
  • Posts 5
  • Reviews 107
  • Kudos2
Overall
› Quality
› Value
Module very accurate clocks. Use temperature correction for precise course of time. There is a library for working with Arduino. good for DIY.
Reviewed on 4/3/2014 Was this review helpful to you? Yes / No
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