Supplino - A cheap DIY variable PSU

WARNING

This project is for Experts only since has to be considered as a “proof of concept” and I give NO support on electronics and programming. You must perfectly know how Arduino works, how to program it, how to solder and electronics basis. I'll respond here only to questions about the 3D printed enclosure (so, I repeat it again: NO questions about programming, NO questions about electronics). For questions about project itself please refer to my original project page on Hackster.io linked below: read carefully the whole project description. If you still have doubts, please read all the comments. If you still have doubts: read again the article 2 times and comments again. 

Supplino is a Quick & Dirty PSU (Power Supply Unit) made with some widely available breakout boards, an Arduino Nano (or an Arduino Nano Every) and a graphical LCD. It is a project I presented, along my friend MrLoba, on Hackster.io 3 years ago and it had lot of success. Here is the original project page:

 https://www.hackster.io/settorezero/supplino-diy-psu-2a47be

I've shared here the 3mf file for Bambulab  3D-printers. First two plates are the enclosure parts. Plate 3 contains front and back panels, with the back panel having NO hole for the optional USB B port, Plate 4 has both panels with back panel having the hole for the optional USB B port: so you must print Plate 3 or 4 depending if you want or not add an external USB port for connecting the Arduino (I bought this cable for doing this -sponsored link- : https://amzn.to/3SH7Xep)