This morning I was very excited to see DHL arrive a day early with the PCB! After a quick visual inspection where I determined that indeed it looked like a PCB, I started soldering. After getting a few of the switches on and the Pi Pico W soldered onto its headers I really wanted to test to see if the thing was working. 

I tried to repurpose some code from the CartBoard and realized it was far too complex for basic testing. @Steph  to the rescue with a relevant Adafruit article on Keypad and Matrix Scanning in CircuitPython, and in minutes I had a basic test program. 

So, did it work? 

It absolutely did! All the switches are registering and all the routing seems right thus far! It's now back to soldering to get all the rest of the switches on, and then it's time for keycaps and programming. I'm over the moon that my first PCB came back functional, and that all my soldering is working. It's almost like this hobby gets easier the more I do it.