111 open source STM32 boards
STMicroelectronics' Arm Cortex-M family, from the STM32F0 to the H7, plus STM8. Every board here is a public GitHub project with its KiCad files, read for size, layers and parts. Pick one close to your design and simulate its firmware on HardLabs before you build it.
STM32AxxSolder
AxxAxx
39 × 82.5 mm122 parts2LGPL-3.01.7k
STM32Twonkie
dojoe
25.4 × 25.4 mm56 parts4LNo license415
STM32EEZ DIB MCU r1B2
eez-open
139 × 70 mm191 partsTAPR-OHL-1.0391
STM32${DOC TYPE} Document
EPFLXplore
69.7 × 76.7 mm253 parts6LApache-2.0345
STM32Ovc
osrf
230 × 56 mm379 parts6LApache-2.0208
STM32Multistepper
eddyem
113.5 × 105.5 mm234 parts4LNo license206
STM32Maxwell main
azonenberg
280 × 195 mm987 parts8LBSD-3-Clause193
STM32FreeEEG32-beta shorting minuses
neuroidss
70 × 70 mm224 parts4LAGPL-3.0164
STM32EPS
rgw3d
85 × 85 mm629 parts4LGPL-3.0155
STM32Module17
M17-Project
100 × 83 mm186 parts4LCERN-OHL-W-2.0129
STM32DingoPDM
corygrant
72.4 × 95.3 mm151 parts4LMIT123
STM32Mainboard
Cluradev
120 × 90 mm162 parts4LNo license119
STM32Mun
RGBKB
154 × 105.1 mm436 parts2LGPL-3.0113
STM32PER|FORMER eurorack sequencer
westlicht
171.5 × 106.7 mm304 parts2LCC-BY-NC-4.0109
STM32MicroRusEFI
rusefi
80.6 × 93.7 mm238 parts2LNo license97
STM32Nitrokey Pro
Nitrokey
21.8 × 16.3 mm26 parts2LNo license89
STM32Delta
Scottapotamas
199.9 × 69.3 mm231 parts4LNo license51
STM32LMS8001 App
myriadrf
60 × 60 mm282 partsNo license50
STM32Oscar components
dchwebb
71 × 100 mm63 parts4LUnlicense38
STM32LMS8001-Companion
75.9 × 96 mm350 partsNo license36
STM32Shirley-FC-Dev-Board
Bare-Metal-Foundry
56 × 46 mm110 parts4LNo license29
STM32Mist
modern-hobbyist
372.1 × 141.2 mm445 parts2LMIT25
STM32FreeEEG32-alpha1.5
70 × 70 mm192 parts4LAGPL-3.023
STM32BigBoy
transistorfet
160 × 100 mm120 parts4LMIT17
STM32CanardBoard
waterloo-rocketry
100 × 70 mm244 parts6LGPL-3.014
STM32ChibiESC
joewa
143.5 × 14 mm187 parts4LGPL-3.010
STM32Quantum control
embeddedos-org
280 × 200 mm740 parts16LMIT8
STM32Hdmilight v3
esar
100 × 100 mm249 parts2LGPL-2.08
STM32Fipper Zero
aaakum4
126 × 70 mm70 parts4LGPL-3.08
STM32Main
wgbowley
60 × 40 mm59 parts2LMIT8- schematic only · 9 partsSTM32
MetaForge
FidelOdok
9 partsCustom license8 
STM32Stm32mp1-custom devboard
voloviq
120 × 80.6 mm194 parts4LNo license7
STM32DC26
dodgymike
129.1 × 142.3 mm678 parts2LNo license6
STM32Muirgen Main Control Unit
Tuskar-Marine
280 × 200 mm381 parts4LNo license6
STM32Usb fm radio
anttikes
58.8 × 29.5 mm36 parts4LCC-BY-NC-4.06
STM32Knox-Key
Kingdragoncat
31.2 × 17.1 mm29 parts2LGPL-3.05
Open source STM32 boards at a glance
The gallery holds 111 open source STM32 boards from 44 GitHub repositories; a typical one measures about 99.1 × 80 mm and carries around 185 components.
57% use four copper layers or more, and 62% carry an open source license.
The most starred is AxxSolder by AxxAxx.
Parts most used on STM32 boards
What STM32 boards are built for
Open source STM32 boards: common questions
Where can I find open source STM32 boards?
This page lists 111, each read from its KiCad files on GitHub: board size, layers, the full parts list and a render of the PCB, with links to the original repository.
What parts are most common on STM32 boards?
The USBLC6-2SC6, 74HC4051, ADUM1402BRWZ, ADuM3160 and AMS1117-3.3 appear in the most repositories here.
How big is a typical STM32 board?
The median is 99.1 × 80 mm, and 43% are two-layer designs.
What is the most popular open source STM32 board?
By GitHub stars, AxxSolder by AxxAxx, with 1,687 stars.
Can I simulate one of these STM32 boards before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.