Pica40 — what fits
Controller
1 wireless option — drops straight into the socket, but needs ZMK firmware nobody has recorded for this design
- Seeed XIAO nRF52840 (XIAO BLE) — drops in; needs the firmware config
2 more wired options
Switches
These compare footprints only: we haven't recorded how this board senses a keypress.
- ✓ MX
- ✓ Choc v1
- ✗ Choc v2 — this design's own footprint is Choc v1, MX, not this
- ✗ Alps — this design's own footprint is Choc v1, MX, not this
Keycaps
Which keycaps fit depends on which switch you fit — this board takes Choc v1 or MX.