For the most part, the build is what you would expect: a 16×8 LED Matrix display driven by a TLC5920 LED driver, with an Arduino that uses a DS1307 RTC (real-time clock) with a coin cell battery ...

One example project from [cicciocb] is a scrolling dot matrix LED clock. The code is really simple: ' Simple program using Annex and a MAX7219 dot matrix module ' by cicciocb 2019 ...