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MacOS-Keyboard

CalamityCow·MacOS-Keyboard·MacOS Keyboard/STM32F072CBT6/ScottoModules.kicad_pcb

MacOS-Keyboard PCB layout, top view — open source STM32 board by CalamityCow
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About the MacOS-Keyboard PCB

MacOS-Keyboard is an open source STM32 PCB design by CalamityCow, published on GitHub. It is a 2-layer board measuring 432.2 × 143 mm, with 440 components from 23 distinct parts.

Its main chip is the STM32F072CBTX, from the STM32 family. Other key parts include the 74AHCT125, XC6206 and USBLC6-2SC6. By type, the board carries 121 capacitors, 104 LEDs, 103 switches, 101 diodes, 5 resistors and 4 ICs.

It belongs with the keyboards designs in this gallery.

From the project

Two modules based on the STM32F072CBT6 to make integrated MCU PCBs simpler. They're designed to sit between 2 switches on an ortholinear or row-staggered keyboard, column-staggered will require some manual moving to get them to fit correctly.

Two modules based on the STM32F072CBT6 to make integrated MCU PCBs simpler. They're designed to sit between 2 switches on an ortholinear or row-staggered keyboard, column-staggered will require some manual moving to get them to fit correctly.

1. The project is setup as a Kicad template, first open Kicad and select "New Project from Template..." from the file menu.

MacOS-Keyboard, from the project README
From the project README

Main components on the MacOS-Keyboard

STM32F072CBTX74AHCT125XC6206USBLC6-2SC6

MacOS-Keyboard bill of materials (BOM)

440 components, 23 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F072CBTX
STM32F072CBTx
U1
1
74AHCT125
U2
1
XC6206
U3
1
USBLC6-2SC6
U4
1
C165948
USB_C
J1
1
500MA
500mA
F1
101
Keyswitch
S1, S2, S3, S4, S5, S6, S7, S8 +93
1
SW_Push
SW1
1
RotaryEncoder
SW2
3
SK6812MINI
DisplayLED1, DisplayLED2, DisplayLED3
101
SK6812MINI
LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +93
101
Diode
D1, D2, D3, D4, D5, D6, D7, D8 +93
102
100NF
100nF
C7, LEDCAP1, LEDCAP2, LEDCAP3, LEDCAP4, LEDCAP5, LEDCAP6, LEDCAP7 +94
2
1UF
1uF
C8, C9
4
CL05B104KB54PNC
100nF
C10, C11, C13, C16
2
CL05A475MP5NRNC
4.7uF
C12, C17
1
CL05B103KB5NNNC
10nF
C14
1
CL05A105KA5NQNC
1uF
C15
3
100nF
DisplayLEDCAP1, DisplayLEDCAP2, DisplayLEDCAP3
6
100UF
100uF
LEDBULKCAP1, LEDBULKCAP2, LEDBULKCAP3, LEDBULKCAP4, LEDBULKCAP5, LEDBULKCAP6
Show 3 more
QtyPartRefs
1
10K
10k
R1
2
5.1K
5.1k
R2, R3
2
500R
R4, R5

MacOS-Keyboard design files

The KiCad project lives in the CalamityCow/MacOS-Keyboard repository on GitHub; these links point at the commit this page was built from.

MacOS-Keyboard: common questions

What microcontroller does the MacOS-Keyboard use?

The MacOS-Keyboard is built around the STM32F072CBTX, from the STM32 family.

How big is the MacOS-Keyboard PCB?

The MacOS-Keyboard measures 432.2 × 143 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MacOS-Keyboard?

440 components, from 23 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the MacOS-Keyboard design files?

From the CalamityCow/MacOS-Keyboard repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the MacOS-Keyboard design in my own project?

The repository has no license, so all rights stay with CalamityCow. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the MacOS-Keyboard without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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