calico

calico is a 54 key (6x4+3 split) column-staggered choc-spaced split ergonomic keyboard with freehanded traces and diode sprinkles

pro micro based
reversible pcb
choc v1 hotswap only

board

v0.2

changes from v0.1

brought trrs jack all the way to the edge
brought pro micro down a bit, close gap with trrs
modify footprints for reset and trrs
use different footprint for the pro micro

to build calico, you'll need:

2x calico v0.2 pcbs
2x pro micro compatible boards
54x choc v1 switches
54x choc 1u keycaps (I used MBK profile)
54x Kailh choc hotswap sockets
54x SOD-123 diodes (I used 1N4148W)
2x TRRS PJ-320A jacks
1x TRRS cable
2x tact switch (optional, just carry a paperclip)
at least 8x rubber feet (I used 10)
1x usb-c cable

I'd also recommend socketing your pro micros:

4x BBL-112-T-E Samtec (mouser, digikey)
4x 315-43-112-41-003000 Mill-Max (mouser, digikey)

calico was inspired by

and designed with the use of