I the original plan was to make a whole bunch of boxes. I didn’t want to use an Arduino in every box, so I was going to use an ATmega328P. I couldn’t even get the Arduino bootloader onto the chip, so that did not work out at all. Also, none of the perfboard circuits I built worked either. I couldn’t find the weak or broken connection on the board, so I ended up just using the breadboard.
I also tried building Arduino shields. They didn’t work either. Making multiples of this project failed big time. It was very annoying.