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Pcb

CoffeeBreakKeyboards·kawa·pcb/pcb.kicad_pcb

Pcb layout, top view — open source STM32 board by CoffeeBreakKeyboards

About the Pcb

Pcb is an open source STM32 PCB design by CoffeeBreakKeyboards, published on GitHub. It is a 2-layer board measuring 234.7 × 91.6 mm, with 95 components from 22 distinct parts.

Its main chip is the STM32F072CBTX, from the STM32 family. Other key parts include the MCP1700-3002E_SOT23 and SRV05-4. By type, the board carries 36 diodes, 34 switches, 11 capacitors, 7 resistors, 3 ICs and 1 transistor.

It belongs with the keyboards designs in this gallery.

From the project

A 32 key 'fixed split' keyboard heavily inspired by the Reviung keyboards by gtips.

Main components on the Pcb

STM32F072CBTXMCP1700-3002E_SOT23SRV05-4

Pcb bill of materials (BOM)

95 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F072CBTX
STM32F072CBTx
U1
1
MCP1700-3002E_SOT23
U2
1
SRV05-4
U3
1
DTC123J
Q1
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J1
1
500MA
500mA
F1
1
SW_Push
SW1
30
SW_PUSH
SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9 +22
2
SW_PUSH
SW17, SW21
1
Rotary_Encoder_Switch
SW34
1
OLED
OL1
34
SOD_123
D1, D2, D3, D4, D5, D6, D7, D8 +26
1
RB060M-60TR
D34
1
SMF9.0CA
D36
3
0.1UF
0.1uF
C1, C2, C3
2
4.7UF
4.7uF
C4, C5
3
1UF
1uF
C6, C8, C9
2
10UF
10uF
C7, C10
1
4.7NF
4.7nF
C11
3
100K
100k
R1, R2, R3
Show 2 more
QtyPartRefs
2
5K1
R4, R5
2
4.7K
4.7k
R8, R9

Pcb design files

The KiCad project lives in the CoffeeBreakKeyboards/kawa repository on GitHub; these links point at the commit this page was built from.

Pcb: common questions

What microcontroller does the Pcb use?

The Pcb is built around the STM32F072CBTX, from the STM32 family.

How big is the Pcb?

The Pcb measures 234.7 × 91.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pcb?

95 components, from 22 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 Pcb design files?

From the CoffeeBreakKeyboards/kawa repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Pcb design in my own project?

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

Can I test firmware for the Pcb 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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