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LCK75

by lyso1 · ·

84 / 83 / 82 / 81 keys unibody

MX soldered ATmega32A QMK

3D render of the LCK75 circuit board
The bare PCB, drawn from LCK75.kicad_pcb. No switches or keycaps: this is the board as manufactured.

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Record 100% complete · 18 of 18 fields

a 75% through-hole keyboard designed by myself with inspiration from the CFTKB Discipline and Yiancar Gingham

Layouts

Spec

Shape

Body
unibody
Splay
no
Stagger
row-staggered
Key spacing
MX spacing · 19.05 × 19.05 mm

Switches

Switch footprint
MX
Hotswap
Mill-Max, or solder the switches in

Electronics

Controller
soldered ATmega32A
Connectivity
Wired — the soldered ATmega32A has no radio
USB port
USB-C
Firmware
QMK (lyso1/lck75)
Firmware targets
ATmega32A
Key wiring
6×16 matrix, column-to-row diodes
Room for
display, encoder
Power switch
no
Exposed components
no

Building it

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

Licensing

Hardware
MIT
Firmware
MIT
Documentation
MIT

Sources