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Hw toolkit

El-Guapo2024·hw-toolkit·docs/projects/can_servo/can_servo/can_servo.kicad_sch

This repository ships a schematic but no board layout.

About the Hw toolkit PCB

Hw toolkit is an open source STM32 PCB design by El-Guapo2024, published on GitHub under the MIT license. It is a board, with 19 components from 14 distinct parts.

Its main chip is the STM32G431CBUx, from the STM32 family. Other key parts include the TPS54302, C_10uF_0805, C_22uF_0805, C_100nF_0402 and L_10uH_1210. By type, the board carries 16 ICs and 3 connectors.

It belongs with the robotics & motion designs in this gallery.

From the project

EE design copilot — hw_toolkit schematic/PCB authoring + KiCad MCP servers. Claude Code plugin.

Jupyter-first Python library for hardware (KiCad) schematic design. Engineers write one notebook cell per module, declare nets as buckets, and export a finalized .kicadsch` zip ready for phase-2 hand-tune in eeschema.

- Board — the one object a notebook holds. Owns parts, nets, and the scratch dir KiCad files live in. - Module — the matplotlib-style handle returned by board.module(...). Carries math, runs checks, renders inline via .show(). - Net — a bucket of pins (SKiDL / atopile style). net += "sub.port", "sub.port" joins. Star-expands at bundle time. - Board.exportkicad("foo.zip") — the…

Main components on the Hw toolkit

TPS54302C_10uF_0805C_22uF_0805C_100nF_0402L_10uH_1210R_31.6k_0603R_10k_0603STM32G431CBUxAS5047DTCAN330GC_4.7uF_0805R_10k_0402

Hw toolkit bill of materials (BOM)

19 components, 14 distinct parts.

QtyPartRefs
1
TPS54302
U1
1
C_10uF_0805
U2
1
C_22uF_0805
U3
5
C_100nF_0402
U4, U11, U13, U14, U15
1
L_10uH_1210
U5
1
R_31.6k_0603
U6
1
R_10k_0603
U7
1
STM32G431CBUx
U8
1
AS5047D
U9
1
TCAN330G
U10
1
C_4.7uF_0805
U12
1
R_10k_0402
U16
2
Conn_01x02
J1, J2
1
Conn_01x03
J3

Hw toolkit design files

The KiCad project lives in the El-Guapo2024/hw-toolkit repository on GitHub; these links point at the commit this page was built from.

Hw toolkit: common questions

What microcontroller does the Hw toolkit use?

The Hw toolkit is built around the STM32G431CBUx, from the STM32 family.

How many components are on the Hw toolkit?

19 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the Hw toolkit design files?

From the El-Guapo2024/hw-toolkit repository on GitHub, which has the schematic and a netlist; the links under Design files point to each one.

Can I use the Hw toolkit design in my own project?

Yes, under the terms of its MIT license, which El-Guapo2024 chose for the repository.

Can I test firmware for the Hw toolkit 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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