Hello,
Which one of the clock modules is the most precise and losing the least amount of seconds by the time? Regardless of the price.
Choosing the right module
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- adafruit_support_bill
- Posts: 88099
- Joined: Sat Feb 07, 2009 10:11 am
Re: Choosing the right module
For self-contained RTC modules, the DS3231 is the most accurate and lowest drift one we carry.
There are chip-scale atomic clock modules out there. Microchip makes one that lists for about $5K.
For more reasonably priced atomic clock accuracy with no drift, you can use a GPS module - provided that you have a clear view of the sky.
WiFi is another option, since most network time servers use GPS receivers as a reference time-base.
There are chip-scale atomic clock modules out there. Microchip makes one that lists for about $5K.
For more reasonably priced atomic clock accuracy with no drift, you can use a GPS module - provided that you have a clear view of the sky.
WiFi is another option, since most network time servers use GPS receivers as a reference time-base.
- Dan_Maris
- Posts: 14
- Joined: Thu Aug 26, 2021 8:34 am
Re: Choosing the right module
Thank you! Is it more accurate then ChronoDot v2.1?adafruit_support_bill wrote:For self-contained RTC modules, the DS3231 is the most accurate and lowest drift one we carry.
Also is it better to use rechargable or non-rechargable batteries for these modules? Do they charge the battery?
- adafruit_support_bill
- Posts: 88099
- Joined: Sat Feb 07, 2009 10:11 am
Re: Choosing the right module
The Chronodot is also based on the DS3231, so the accuracy should be the same as our DS3231 breakout board.
The DS3231 does not include a charge control circuit. The battery terminals are input only.
The DS3231 does not include a charge control circuit. The battery terminals are input only.
Please be positive and constructive with your questions and comments.