RTClib — DS3231 / ChronoDot RTC Library

If you’re building anything with a DS3231 or ChronoDot real-time clock, this library gets you up and running fast. It’s a proven fork of JeeLab’s RTClib with proper DS3231 support and a full set of ChronoDot example sketches — the stuff the original library was missing.

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Quick Facts

LanguagesC++
LicenseOpen Source
HardwareDS3231 / ChronoDot RTC module
Community⭐⭐⭐⭐⭐ 26 stars · 20 forks

With 26 stars and 20 forks, this is one of the go-to DS3231 libraries in the Arduino community. If you need accurate timekeeping in your project, grab this and be running in minutes.

Key Features

  • Full DS3231 and DS1307 support — high-accuracy timekeeping out of the box
  • Complete ChronoDot example set — not just blink-an-LED demos
  • Clean DateTime class — makes time math and formatting straightforward
  • Drop-in compatible with projects already using JeeLab’s RTClib

Browse all of Red’s open-source projects on GitHub, or see the full code project archive on this site.