I made a few changes to the excellent Arduino based digital clock version by Stork15. First, I wanted the ability to change the "on" and "off" servo positions of each of the segments, so I added a SETUP button. When you go in to setup mode, it cycles through the on and off positions for each segment of the clock and you use the + and - buttons to set the correct positions. When you are done, the values are stored in the Arduino's EEPROM so they are there each time the clock is plugged in.

I added my code here. It's not the world's greatest or cleanest coding job ever!! I added a picture of the way I wired my buttons together. If you use the standard size buttons, you can print the face plate and case they go in. I soldered everything together on the back of the PLA circuit board. Shockingly, it worked and didn't melt the print.

This is the web site I used to figure out how to wire all the buttons to a single analog pin on the Arduino.

https://www.the-diy-life.com/multiple-push-buttons-on-one-arduino-input/

This is a remix from https://www.thingiverse.com/thing:3375870