Nice work! Did you hand-solder that, or did you get JLC to assemble it for you?
I’m wondering what first bring up is like, as I’ve never build an RP2040 board from scratch before – so long as you use the 12MHz crystal, do you just ground boot and it will come up as USB mass storage? Or do you need to manually flash a bootloader onto it?
(My first RP2040 board is over here: Thinkpad keyboard mod (super early stages)! - #24 by C_Scott_Ananian but it hasn’t come back from the fab yet.)