Nixie Tube Clock
https://github.com/nsafran1217/arduino-nixie-clock
Custom Nixie tube clock using in-12 tubes
This was the first project I've completed with professionally made boards. I used JLCPCB, since they were cheap.
This was also the first time I used a EDA tool. I use Eagle since there were a lot of tutorials available.
I made some mistakes related to spacing of the traces. I used one spacing for all the signal, and I think the HV traces are still to close.
The code is messy, but it works well for what it is. I did have to make one change to the board to bring 5v out to the connector for the rotary encoder, but that was a simple bodge wire to add.