It runs on an Arduino Pro Mini knockoff and an RTC module for the sake of simplicity. [Lee] chained NeoPixel strips together in five rows of eight, which allowed him to use a 3×5 font to display ...

(Original link to the project in Spanish.) The heart of the project is an Arduino Pro Mini, which is especially suited for this project because of its size.

The creator of the Arduino RF Pro Mini open source development board Etienne, explains a little more about the inspiration behind the project. “ I’ve loved Arduino for years.

Unlock New Possibilities with Arduino Pro Connectivity Solutions The combination of the Arduino Portenta Mid Carrier and the Arduino Pro 4G Module opens up a world of possibilities for your projects.