m48

m48 4x12 in lego¶

this is practlically a planck style.

an ortholinear keyboard set in lego 4x12 with optional encoder and leds this is part of a bigger family of ortholinear keyboards in lego see for reference https://mlego.elena.space/

status: tested all ok!

Features:

4x12
1 encoder
led strip (optional)
5 pins
stm32f401 or 411(if you ask) from we act https://github.com/WeActTC/MiniSTM32F4x1
firmware qmk

3d render¶

pcb¶

front

back

kicad

bom¶

1xSTM32F401 we act pins
48 signal diodes 1N4148 , do 35
1 encoder
2x220Ω or 350Ω these are for leds so you may have to compute the R to match your colours and desired brightness.
1 leds
1 40 pin DIL/DIP sockets whatever you prefer
led strip 3pins, optional
5 pin MX switches 48
lego see main article, and imagination.
lego 32x16 plates for bottom, and bricks as you please see notes on m65

case¶

case information can be found here

assembly¶

this is a very rushed assembly guide but shall give you the main idea.

gerbers¶

gerbers ready to be printed at jlcpcb are available

rev 1

full kicad project if you want to generate your own or modify is available here kicad symbols/footprints are in the m65 repo

firmware¶

   git clone --recurse-submodules -b mlego https://github.com/alinelena/qmk_firmware.git qmk-alin
   cd qmk-alin

   qmk compile -kb m-lego/m48/rev1 -km default

   #or
   make m-lego/m48/rev1:default

pins¶

rev1¶

columns: "A10", "A15", "B3", "B4", "B5", "B7", "B6", "A1", "A2", "A3", "A4", "A5"
rows: "A6", "A7", "B0", "B10"

Encoders

Pad_A: A0
Pad_B: A8

Leds

Leds	Pin
NUM_LOCK	B12
CAPS_LOCK	C13
SCROLL_LOCK	B13
RBG_DI	B15