DS3231 Precision RTC Breakout: ID 3013 vs ChronoDot

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adavid7
 
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DS3231 Precision RTC Breakout: ID 3013 vs ChronoDot

Post by adavid7 »

Is this new RTC breakout (DS3231 Precision RTC Breakout, ID 3013) functionally equivalent to the older ChronoDot (ID 255)?

If so, it looks like a much nicer package and form factor!

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Franklin97355
 
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Re: DS3231 Precision RTC Breakout: ID 3013 vs ChronoDot

Post by Franklin97355 »

Same chip, same precision.

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sembazuru
 
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Re: DS3231 Precision RTC Breakout: ID 3013 vs ChronoDot

Post by sembazuru »

One subtle difference. The Chronodot (since v2.1 I believe) uses the **SN variant of the chip which means it is still accurate below 0°C (down to -40°C). The AdaFruit chip is the **S only guaranteed accurate down to 0°C. (See page 18 of the datasheet.) I remember seeing on the Chronodot blog the announcement of switching to the **SN variant because he had customers who wanted to deploy projects with the Chronodot outside during winter.

That said, because it is the same base chip, either AdaFruit's or Chronodot's libraries should work. So if you already have code written using the Chronodot libraries you shouldn't need to change anything to use the AdaFruit offering. And, vise-versa if you prototype with AdaFruit's board using their libraries but then find you need the accuracy below freezing, you should be able to drop in a Chronodot v2.1+ without any code changes.

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adavid7
 
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Re: DS3231 Precision RTC Breakout: ID 3013 vs ChronoDot

Post by adavid7 »

Thanks for the clarification. Very helpful.
.ad

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Programmer248
 
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Re: DS3231 Precision RTC Breakout: ID 3013 vs ChronoDot

Post by Programmer248 »

franklin97355 wrote:Same chip, same precision.
I also need help with my product where should i go to get help

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