open-source

DS3231 Precision Clock

A temperature-compensated real-time clock with coin-cell backup. Keep timestamps through a host power outage.

Remix this board → View source on GitHub ↗

License: CC BY-SA 3.0
Source revision: Original CR1220 breakout
Last mirror: Sep 10, 2026
Git commit: 1d60495b54bd

About DS3231 Precision Clock

A temperature-compensated real-time clock with coin-cell backup. Keep timestamps through a host power outage. Original two-layer design for adaptation to ViaGrid; rerouting and testing are required.

Published design files

Sensors & measurement · two copper layers
Open source (CC BY-SA 3.0) · Limor Fried / Adafruit Industries
Mirrored at 1d60495b54bd

Canonical source stays in the upstream git repository (and in WalGit after a successful mirror push). Generated renders and 3D models use artifacts/viagrid/ds3231-rtc/1d60495b54bd6ff8fa4d5acca7a6e1c1a317cfe1/a093b7ae9bbd899a on the artifact CDN and are not checked into git.