With all of the Trekulator components wired and tested I turned to packaging everything into the case. I had already decided that I would create a PCB to bring some order to the wiring chaos.

I think there are a couple of I/O pins still available on the ESP32 but not many. So I got to work on the PCB. 

After struggling a bit to get the last couple of traces attached without having to create a via, I broke down and decided to just do a 4-layer board. For the cost difference in fabrication, for what is essentially a one-off, I decided it was worth it. 

As I mentioned in a previous log, this PCB is the same size as the KeyPad PCB and will be installed directly above the KeyPad.