m60 (5×12 Ortho)

5×12 Ortho 60 Keys STM32F401 / RP2040 QMK
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m60 — 5×12 LEGO Ortholinear Keyboard

Status: Rev 1 & Rev 2 Tested 5×12 Ortho (60 Keys) STM32F401 / RP2040 Pico Rotary Encoder + OLED (Rev 2) QMK (UF2)

M60 5x12 rev 1 M60 5x12 rev 2

A Preonic-inspired 5×12 ortholinear mechanical keyboard mounted in a modular LEGO case, featuring an optional rotary encoder, RGB underglow strip, and I²C OLED support (Rev 2, thanks to @yyhazy).

Status: Rev 1 & Rev 2 Tested 

* [x] Gerbers designed
* [x] Firmware
* [x] Breadboard tested
* [x] Gerbers printed
* [x] Board tested

Features

  • Layout: 5×12 ortholinear (60 keys, 5-pin PCB-mount MX switches)
  • Controller:
  • Peripherals: Optional EC11 rotary encoder, 3-pin addressable LED strip, and I²C OLED display (Rev 2)
  • Firmware: QMK with UF2 drag-and-drop flashing by default

3D Render & PCBs

Rev 2 3D Render

M60 5x12 rev 2 3D render

Rev 1 PCB

M60 5x12 PCB

BOM

Rev 2 (RP2040 Pico)
  • 1× Raspberry Pi Pico (RP2040) or compatible pinout module
  • 60× 1N4148 signal diodes (DO-35 through-hole)
  • 60× 5-pin Cherry MX–compatible switches
  • 1× EC11 rotary encoder (optional)
  • 1× I²C OLED module (optional)
  • 2× 220 Ω or 350 Ω LED resistors (select value for your LED color and brightness)
  • 2× status indicator LEDs
  • 1× 40-pin DIL/DIP socket (or two 20-pin female headers)
  • 3-pin RGB LED strip (optional)
  • LEGO 16×32 baseplate and perimeter plates/bricks
Rev 1 (STM32F401)
  • 1× WeAct STM32F401 BlackPill
  • 60× 1N4148 signal diodes (DO-35 through-hole)
  • 60× 5-pin Cherry MX–compatible switches
  • 1× EC11 rotary encoder (optional)
  • 2× 220 Ω or 350 Ω LED resistors
  • 2× status indicator LEDs
  • 1× 40-pin DIL/DIP socket
  • 3-pin RGB LED strip (optional)
  • LEGO 16×32 baseplate and perimeter plates/bricks

Case & Assembly

Gerbers & KiCad

Production-ready Gerbers for JLCPCB:

Full KiCad project files are available in the m-lego/m60 GitLab repository, using shared symbols and footprints from m-lego/m65.

Firmware

Rev 2 (`RP2040`)

Download prebuilt UF2: mlego_m60_rev1_default.uf2 or compile from source:

git clone --recurse-submodules -b mlego https://github.com/alinelena/qmk_firmware.git qmk-alin
cd qmk-alin
qmk compile -kb mlego/m60/rev2 -km default

# or using make:
make mlego/m60/rev2:default
Rev 1 (`STM32F401`)

Download prebuilt UF2: mlego_m60_rev1_default.uf2 (requires TinyUF2 bootloader installed on the STM32F401):

git clone --recurse-submodules -b mlego https://github.com/alinelena/qmk_firmware.git qmk-alin
cd qmk-alin
qmk compile -kb mlego/m60/rev1 -km default

# or using make:
make mlego/m60/rev1:default

Pinout Reference

Rev 2 (`RP2040`)
  • Columns (C0–C11): GP1, GP6, GP7, GP8, GP9, GP15, GP14, GP13, GP12, GP11, GP10, GP21
  • Rows (R0–R4): GP19, GP16, GP17, GP18, GP20
  • Encoder: Pad_A = GP4, Pad_B = GP5
  • OLED (I²C): SDA = GP2, SCL = GP3
Indicator / RGB Pin
NUM_LOCK GP22
CAPS_LOCK GP25
SCROLL_LOCK GP27
RGB_DI GP0
Rev 1 (`STM32F401`)
  • Columns (C0–C11): A10, A15, B3, B4, B5, B7, B6, A1, A2, A3, A4, A5
  • Rows (R0–R4): A6, A7, B0, B1, B10
  • Encoder: Pad_A = A0, Pad_B = A8
Indicator / RGB Pin
NUM_LOCK B12
CAPS_LOCK C13
SCROLL_LOCK B13
RGB_DI B15

Additional Photos

M60 5x12 build

Previous m65 (5×13 Ortho)
Next m60 Split (5×12 Split)
m60 (5×12 Ortho)

Quick Specs

  • Layout: 5×12 Ortho
  • Keys: 60
  • MCU: STM32F401 / RP2040
  • Firmware: QMK

Preonic-inspired 60-key 5×12 layout in a LEGO case with rotary encoder, RGB strip, and OLED support.

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