HardLabs

USB-pasthrough unrouted

beattie·stm32f723-USB-demo·kicad/USB-pasthrough-unrouted.kicad_pcb

USB-pasthrough unrouted PCB layout, top view — open source STM32 board by beattie

About the USB-pasthrough unrouted PCB

USB-pasthrough unrouted is an open source STM32 PCB design by beattie, published on GitHub. It is a 4-layer board measuring 40 × 100 mm, with 77 components from 43 distinct parts.

Its main chip is the STM32F723VET6, from the STM32 family. Other key parts include the AMS1117. By type, the board carries 25 capacitors, 23 resistors, 8 connectors, 5 jumpers, 5 LEDs and 3 fuses.

It belongs with the displays & leds designs in this gallery.

From the project

A hardware and firmware demonstration platform based on the STM32F723VET6, a Cortex-M7 with an embedded USB HS PHY. Inspired by the Pastilda project, with a goal of providing robust Linux support for USB keyboard passthrough. This project was started as a vehicle to learn Rust an

A hardware and firmware demonstration platform based on the STM32F723VET6, a Cortex-M7 with an embedded USB HS PHY. Inspired by the Pastilda project, with a goal of providing robust Linux support for USB keyboard passthrough. This project was started as a vehicle to learn Rust and keep my USB up-to date as well as display my limited HW design abilities.

The board sits between a USB keyboard and a Linux host. The firmware intercepts keystrokes, allowing for key remapping, macros, and other HID transformations entirely in hardware — no kernel modules or userspace daemons required on the host.

Main components on the USB-pasthrough unrouted

STM32F723VET6AMS1117

USB-pasthrough unrouted bill of materials (BOM)

77 components, 43 distinct parts.

QtyPartRefs
1
STM32F723VET6
U1
1
AMS1117
U2
1
8 MHz
Y1
1
USB_Power
J1
1
Power_Sel
J4
1
SPI Display
J5
1
SWD
J6
1
Cortex Debug
J7
1
USB_C
J8
1
USB_A
J9
1
MicroSD
J10
3
F
F1, F2, F3
1
ID0
JP1
1
ID1
JP2
1
ID2
JP3
1
ID3
JP4
1
ID4
JP5
1
Boot0
SW1
1
Reset
SW2
1
GND
TP1
Show 23 more
QtyPartRefs
1
RED
LED1
1
BLUE
LED2
1
GREEN
LED3
1
YELLOW
LED4
1
Status
RGB_LED1
2
600@100MHz
FB1, FB2
11
100nF
C1, C3, C5, C7, C9, C11, C17, C21 +3
5
4.7uF
C2, C4, C6, C8, C10
2
27pF
C13, C14
3
2.2uF
C15, C16, C18
2
10uF
C19, C25
2
1uF
C20, C23
2
150
R1, R23
2
68
R2, R22
2
33
R3, R19
4
5.1K
R4, R5, R20, R21
1
10K
R6
6
47K
R7, R8, R12, R13, R14, R15
1
330
R9
1
12K
R10
1
100K
R11
1
220k
R16
2
100
R17, R18

USB-pasthrough unrouted design files

The KiCad project lives in the beattie/stm32f723-USB-demo repository on GitHub; these links point at the commit this page was built from.

USB-pasthrough unrouted: common questions

What microcontroller does the USB-pasthrough unrouted use?

The USB-pasthrough unrouted is built around the STM32F723VET6, from the STM32 family.

How big is the USB-pasthrough unrouted PCB?

The USB-pasthrough unrouted measures 40 × 100 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the USB-pasthrough unrouted?

77 components, from 43 distinct parts. The full bill of materials is listed on this page.

Where can I download the USB-pasthrough unrouted design files?

From the beattie/stm32f723-USB-demo repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the USB-pasthrough unrouted design in my own project?

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

Can I test firmware for the USB-pasthrough unrouted 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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