Uno WiFi R4 RTC NTP sync to led matrix

Other Hardware LEDs and Multiplexing
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I want to share with you my current trials with an Arduino Uno WiFi R4 that I just received.
In Github I forked a repo from Clemens Valens (Elektor): led matrix.

I added a modified example,
see: led matrix with accents

I also added a modified example taken from the repo: RTC NTP sync

See my fork on Github:
RTC NTP sync to led matrix

Running on a power bank

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