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45

by lighteningab · ·

46 keys unibody

MX soldered ATmega32U4 QMK

3D render of the 45 circuit board
The bare PCB, drawn from 45_keyboard.kicad_pcb. No switches or keycaps: this is the board as manufactured.

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Record 94% complete · 17 of 18 fields

No summary recorded.

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 ATmega32U4
Connectivity
Wired — the soldered ATmega32U4 has no radio
USB port
on a separate USB daughterboard
Firmware
QMK (handwired/ic45_v2)
Firmware targets
ATmega32U4
Key wiring
4×13 matrix, column-to-row diodes
Room for
— not recorded —
Power switch
no
Exposed components
no

Building it

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

Licensing

Hardware
MIT
Firmware
MIT
Documentation
MIT

Sources