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lagom

by mohoyt · ·

73 / 71 / 70 / 69 keys unibody

MX Pro Micro socket QMK

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

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Record 88% complete · 15 of 17 fields

Lagom is an easy to build 65% keyboard using only through hole components. It uses a separate microcontroller (like the Pro Micro, Elite C or something RP2040 based) to enable flexibility in firmware and connectivity and to further simplify the soldering experience (no more tricksy USB ports).

Layouts

Spec

Shape

Body
unibody
Splay
— not recorded —
Stagger
— not recorded —
Key spacing
MX spacing · 19.05 × 19.05 mm

Switches

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

Electronics

Controller
Pro Micro socket
Connectivity
Wireless with a nice!nano v2 — needs a ZMK config
USB port
USB-C or micro-USB, depends on the dev board
Firmware
QMK (sthlmkb/lagom)
Firmware targets
ATmega32U4
Key wiring
5×16 matrix, column-to-row diodes
Room for
encoder
Power switch
no
Exposed components
yes

Building it

Build method
PCB
Soldering
through-hole (diode, connector, rotary encoder, other)
SMD required
no

Licensing

Hardware
CC-BY-NC-4.0
Firmware
CC-BY-NC-4.0
Documentation
CC-BY-NC-4.0

Sources