XL 7-segments Digital Clock/Thermometer

Arduino Nano + DS3231(ZS-042) + 30xAPA104-LED-Strip based digital clock/thermometer

The numbers are 195mm (7.8") height, so that one digit fits right into most Printers,
the HH:MM Version is 580mm (23") wide.

The clock is modularized, it is easy possible to just create a HH:MM:SS version configurable in the code.

There are 3 case parts: the last digit + cap(1x), a normal digit connectable to the next right(3x or 5x), and a dot-case(1 or 2x).
Additionaly are 4 types diffusor-inlets: A (top/bottom), B (upleft/downright), C(upright/downleft) and D(center) and one for the dots.
The last digit case contains space for the two boards (Arduino Nano and ZS-042)
As strip can be used all WS2811, APA104 or Neopixel kinds. I would prefer the 3-wire solutions, since soldering 30(or 46) interlinks is awefull lot of work.

The digit cases can be screwed against a large beam with M3 screws directly driven in the back to give everything a better strength.

Wiring Instructions:
1. Inter