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Dekatron Clock

May 5, 2026

Description Comments Tags

Description

A 3D Printed ESP32 NTP based clock using 80mm "Dekatron" style displays to display 24 hour time down to 1/100th of a second.
Once initial code setup for your network and timezone is completed the clock is switched on and sets itself.

If you want to display DST there is a switch to turn this on and off.

Displays are driven off modified MAX2719 dot matrix modules.

The project is built into an A3 photoframe and a wooden back box.

Full build details and code can be found on my Dekatron Clock page here https://www.brettoliver.org.uk/Dekatron_Clock/Dekatron_Clock.htm

License:

CC BY-SA - Attribution - Share alike

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