After a 3-week wait, the PCBs have finally arrived. They look really good, though I don't know if they do anything else

On a related note, as a follow-up on my lesson about surface mount chips, today I learned the difference between metric and imperial case codes.

This confusion led to what some people might call a small problem.

Anyway, I have to order more, larger components before I can test the PCB. At least I can look at how nice and sophisticated it is while I wait for yet another shipment.