Transform your home into your own boxing gym with this Matrix Portal M4 Boxing Interval Timer. This guide will show you how to assemble and program your own Boxing Interval Timer using CircuitPython.

This features the Matrix Portal M4, which easily drives a 64 x 32 RGB Matrix display with over 200 colorful LEDs to display the timer with excellent visibility - even for the largest gyms!

The timer uses an IBM Plex mono typeface, using a neon green hue for the first minute and thirty seconds for workout time. The text color changes to a yellowish-amber color for the cooldown portion of the time and red for the resting time.


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This guide was first published on Feb 28, 2023. It was last updated on Jun 22, 2024.

This page (Overview) was last updated on Mar 08, 2024.

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