HardLabs

ScottoModules (STM32F072CBT6)

eyalbirger·random-ass-keyboard·pcb/random ass keyboard.kicad_pcb

ScottoModules (STM32F072CBT6) PCB layout, top view — open source STM32 board by eyalbirger

About the ScottoModules (STM32F072CBT6) PCB

ScottoModules (STM32F072CBT6) is an open source STM32 PCB design by eyalbirger, published on GitHub. It is a 4-layer board measuring 119.1 × 108.6 mm, with 77 components from 21 distinct parts.

Its main chip is the STM32F072CBT6, from the STM32 family. Other key parts include the XC6206 and USBLC6-2SC6. By type, the board carries 34 diodes, 22 switches, 12 capacitors, 4 resistors, 3 ICs and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

this is my first entery into the stm32 world... im building a stm32 numpad +4keys + knob + under glow hot swap build. i will be using zmk and jlcPCBA service.

to use this you will need to program it via qmk, and solder the pcb yourself. you will also need hardware to assemble it.

this should cost about 150$ this is the board. you should have the pcb seperated from the plate and back. you should assemble them with m2 screws and then put the switches in. qmk firmware will be coming shortly

ScottoModules (STM32F072CBT6), from the project README
From the project README

Main components on the ScottoModules (STM32F072CBT6)

STM32F072CBT6XC6206USBLC6-2SC6

ScottoModules (STM32F072CBT6) bill of materials (BOM)

77 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F072CBT6
U1
1
XC6206
U3
1
USBLC6-2SC6
U4
1
C165948
USB_C
J1
1
500MA
500mA
F1
1
Keyswitch
S1
17
CPG151101S11-16
Keyswitch
S2, S3, S4, S5, S6, S7, S9, S10 +9
3
CPG151101S11-16
Keyswitch
S12, S16, S17
1
SW_Push
SW1
22
C2128
Diode
D1, D2, D3, D4, D5, D6, D7, D9 +14
12
LED_WS2812B
D8, D18, D20, D21, D26, D27, D28, D29 +4
1
C16133
100µF 10V
C1
1
100NF
100nF
C7
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
1
10K
10k
R1
2
5.1K
5.1k
R2, R3
Show 1 more
QtyPartRefs
1
330R
R4

ScottoModules (STM32F072CBT6) design files

The KiCad project lives in the eyalbirger/random-ass-keyboard repository on GitHub; these links point at the commit this page was built from.

ScottoModules (STM32F072CBT6): common questions

What microcontroller does the ScottoModules (STM32F072CBT6) use?

The ScottoModules (STM32F072CBT6) is built around the STM32F072CBT6, from the STM32 family.

How big is the ScottoModules (STM32F072CBT6) PCB?

The ScottoModules (STM32F072CBT6) measures 119.1 × 108.6 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the ScottoModules (STM32F072CBT6)?

77 components, from 21 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 ScottoModules (STM32F072CBT6) design files?

From the eyalbirger/random-ass-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 ScottoModules (STM32F072CBT6) design in my own project?

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

Can I test firmware for the ScottoModules (STM32F072CBT6) 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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