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

• Lily58 by kata0510
• Peter Blasser's Ciat-Lonbarde PCBs
• bugs by jimmerricks
• Swoop MX by jimmerricks
• Sweep Half Swept by David Barr
• keyboards by mindhatch
• Sofle by Joseph Adamčík
• TOTEM by GEIGEIGEIST

and designed with the use of

• ergogen
• kicad-kbplacer

and licensed under

CERN-OHL-W-2.0 overall. calico uses footprints, modified and unmodified, under different licenses. see ATTRIBUTIONS.md.