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A racing lap timer and data logger for karting

A DIY lap timer and viewer for karting and autocross.

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Earliest dated source: 12 Aug 2026

The full story

Started a few years ago for amateur four-stroke karting, this DIY lap timer and data logger has grown into a small ecosystem that works for almost any motorsport. It handles circuits and point-to-point sprints and deals with many edge cases that the basic public code the author found couldn't, with a viewer for the data.

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Sources

From a short post by the maker, so the details are as they tell them.

  • Arduino forum: Racing laptimer/datalogger (karting / autocross)Forum threadforum.arduino.cc
    Published 12 Aug 2026

    The forum thread with screenshots and details.

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