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Board gpio

kt-21·board-gpio

Board gpio layout, top view — open source STM32 board by kt-21

About the Board gpio

Board gpio is an open source STM32 PCB design by kt-21, published on GitHub. It is a 2-layer board measuring 65.1 × 42.7 mm, with 57 components from 22 distinct parts.

Its main chip is the STM32G474RETx, from the STM32 family. By type, the board carries 21 diodes, 14 resistors, 9 capacitors, 4 transistors, 2 connectors and 1 IC.

From the project

GTSR GPIO Board

Main components on the Board gpio

STM32G474RETx

Board gpio bill of materials (BOM)

57 components, 22 distinct parts.

QtyPartRefs
1
STM32G474RETx
U8
4
2N7002
Q5, Q6, Q7, Q8
1
Conn_01x02_Socket
J2
1
Tag-Connect
J11
1
NCS3S1205SC
DC1
1
R-78C5.0-1.0
DC2
1
LM3671
DC3
2
MICRO-FIT_3.0_6POS_2ROW
I2C1, SPI1
4
D_TVS
D1, D2, D3, D4
2
CUS520
D5, D6
13
MMBZ27VALT1
D9, D10, D11, D14, D15, D16, D27, D28 +5
1
ESD12VD3B
D12
1
Green
D13
1
2.2UH
L1
2
0.1u
C1, C2
4
10uF
C25, C28, C30, C31
2
2.2uF
C26, C27
1
0.1uF
C29
2
120
R1, R16
2
10k
R6, R7
Show 2 more
QtyPartRefs
2
4.7k
R8, R9
8
150 ohms
R17, R18, R19, R20, R21, R22, R26, R31

Board gpio design files

The KiCad project lives in the kt-21/board-gpio repository on GitHub; these links point at the commit this page was built from.

Board gpio: common questions

What microcontroller does the Board gpio use?

The Board gpio is built around the STM32G474RETx, from the STM32 family.

How big is the Board gpio?

The Board gpio measures 65.1 × 42.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Board gpio?

57 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Board gpio design files?

From the kt-21/board-gpio repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Board gpio design in my own project?

The repository has no license, so all rights stay with kt-21. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Board gpio 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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