<![CDATA[Different reset behaviour of Atom Matrix and Atom S3 Lite?]]>Why do those two Atom devices behave differently when being reset?

When I reset the Atom Matrix, the USB serial connection is kept, I see the full console output.

When I reset the Atom S3 Lite, the USB serial connection is always terminated and I need to re-connect, missing parts of the console output.

]]>https://community.m5stack.com/topic/8090/different-reset-behaviour-of-atom-matrix-and-atom-s3-liteRSS for NodeTue, 28 Apr 2026 23:05:34 GMTThu, 19 Feb 2026 14:31:33 GMT60<![CDATA[Reply to Different reset behaviour of Atom Matrix and Atom S3 Lite? on Thu, 19 Feb 2026 21:20:07 GMT]]>Hello @mb

M5Atom Matrix has a dedicated USB-Serial chip which is not affected by the ESP32 reset and thus is keeping the serial connection alive.

In contrast the ESP32S3 inside M5AtomS3 Lite has USB built-in (and doesn't need a dedicated USB-Serial chip). The 'downside' being what you observe - resetting ESP32S3 also resets the USB connection.

Thanks
Felix

]]>https://community.m5stack.com/post/30657https://community.m5stack.com/post/30657Thu, 19 Feb 2026 21:20:07 GMT