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Koca58

by hardware7253 · ·

58 keys split

MX soldered STM32F103 QMK

3D render of the Koca58 circuit board
The bare PCB, drawn from Koca58.kicad_pcb. No switches or keycaps: this is the board as manufactured.

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Record 100% complete · 18 of 18 fields

A Lily58 variant featuring SMT components, RJ45 interconnect and STM32F103 MCU.

Layouts

Spec

Shape

Body
split, 2 halves
Split link
Ethernet cable
Splay
no
Stagger
column-staggered
Key spacing
MX spacing · 19.05 × 19.05 mm

Switches

Switch footprint
MX
Hotswap
Kailh socket, Gateron socket

Electronics

Controller
soldered STM32F103
Connectivity
Wired — the soldered STM32F103 has no radio
USB port
USB-C
Firmware
QMK (koca58)
Firmware targets
STM32F103
Key wiring
29 direct pins per half
Room for
— not recorded —
Power switch
no
Exposed components
— not recorded —

Building it

Build method
PCB
Soldering
SMD, fine-pitch (USB, passive, IC)
SMD required
yes

Licensing

Hardware
MIT
Firmware
MIT
Documentation
MIT

Sources