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Adafruit DS3231 Precision RTC Breakout

SKU: ADA3013

$23.50 AUD, inc GST
$21.36 AUD, exc GST

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Adafruit DS3231 Precision RTC Breakout
23.5 AUD

SKU: ADA3013

$23.50 AUD, inc GST
$21.36 AUD, exc GST
3 reviews 0 5 5
In stock, ships today if ordered before 2PM
Delivered by Tue, 24th of Oct

The datasheet for the DS3231 explains that this part is an "Extremely Accurate I²C-Integrated RTC/TCXO/Crystal". And, hey, it does exactly what it says on the tin! This Real Time Clock (RTC) is the most precise you can get in a small, low power package.

Most RTCs use an external 32kHz timing crystal that is used to keep time with low current draw. And that's all well and good, but those crystals have slight drift, particularly when the temperature changes (the temperature changes the oscillation frequency very very very slightly but it does add up!) This RTC is in a beefy package because the crystal is inside the chip! And right next to the integrated crystal is a temperature sensor. That sensor compensates for the frequency changes by adding or removing clock ticks so that the timekeeping stays on schedule.

This is the finest RTC you can get, and now Adafruit have it in a compact, breadboard-friendly breakout. With a coin cell plugged into the back, you can get years of precision timekeeping, even when main power is lost. Great for datalogging and clocks, or anything where you need to really know the time.

Comes as a fully assembled and tested breakout plus a small piece of header. You can solder header in to plug it into a breadboard, or solder wires directly.

A coin cell is required to use the battery-backup capabilities! Adafruit don't include one by default, to make shipping easier for those abroad, but we do stock them so pick one up or use any CR1220 you have handy.

Check out Adafruit's detailed tutorial for pinouts, assembly, wiring & testing, and more!

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Product Comments


Customer Reviews

  1. Review by Stefan verified purchaser
    Rating
    100

    If you are after a precision RTC for your microcontroller or Raspberry Pi this is the way to go. (Posted on 14/08/2017)

  2. Review by Graham verified purchaser
    Rating
    100

    Time keeping is accurate. Very easy to use with Adafruit libraries and tutorial. (Posted on 20/07/2017)

  3. Review by Greg verified purchaser
    Rating
    100

    Good quality and easy to get going on my arduino mega (Posted on 19/08/2016)

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