1,909 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.
STM32Adapter blackpill
Bastardkb
93.5 × 67.4 mm24 parts2LCERN-OHL-W-2.016
STM32TRNXSDR-carrier
acruxcz
91.8 × 139.8 mm702 parts6LCERN-OHL-S-2.015
STM32Radar v2
TonyStark2007
90.2 × 40 mm264 parts4LGPL-3.015
STM32Allcolours
microresearch
101.3 × 106.2 mm246 partsNo license15
STM32ControlBoard
OpenVVVF
260 × 45 mm239 parts8LCERN-OHL-W-2.015
STM32Aarebot - Eurorack DSP Module
95lux
46 × 110 mm141 parts4LGPL-3.015
STM32Rii-518bt usb qmk
tangles-0
102.5 × 53 mm125 parts4LNo license15
STM32Ethernetcnc
pekkaroi
73 × 100 mm94 parts2LGPL-2.015
STM32Tiny-Dimply-Qazy
ASH-ART
200 × 76.2 mm90 parts2LGPL-3.015
STM32SmartReflow
walclu
43 × 89 mm88 parts4LNo license15
STM32Main Board
Terrapin-Rocket-Team
71 × 66 mm87 parts4LNo license15
STM32HenryFlops
hmerrett
111.6 × 59.4 mm77 parts2LCustom license15
STM32STLinkForm
grumat
73.7 × 38.1 mm65 parts2LGPL-2.015
STM32Braids through hole V1.1 BRAIN
sebastianbeyer
78.7 × 81 mm63 partsNo license15
STM32STM32F Audio Codec
Netrona
61.2 × 44.1 mm58 parts4LNo license15
STM32Stm32-pocket console
sini6a
70 × 97 mm52 parts2LNo license15
STM32Stm32h750-dev board
Essenceia
51.3 × 73 mm48 parts2LNo license15
STM32Vectrex cart
rattboi
48 × 65.5 mm47 parts2LGPL-3.015
STM32SPIN
owntech-foundation
21 × 51 mm34 parts4LNo license15
STM32RT-STACK
fupsrl
150 × 150 mm472 parts6LCC-BY-NC-4.014
STM32Custom keyboard (f303)
howardt12345
395.3 × 138.1 mm421 parts2LCC-BY-NC-4.014
STM32CanardBoard
waterloo-rocketry
100 × 70 mm244 parts6LGPL-3.014
STM32FlexiBMS hardware
SimosMCmuffin
65 × 35 mm204 parts4LCC-BY-NC-4.014
STM32Ruuvitracker hw
ruuvi
38.9 × 33.4 mm135 partsNo license14
STM32Reflow Hot Plate Control Board
ikajdan
80 × 80 mm95 parts2LMIT14
STM32PCB-reflow solder table
DerSpatz
100 × 100 mm77 parts2LMIT14
STM32Bms hardware
jsphuebner
64.5 × 85.1 mm68 parts4LGPL-3.014
STM32Green Pill
IsmaelLopesSilva
51.2 × 70.5 mm29 parts2LNo license14
STM32RSTM32F030C8T6 ProMiniPlus
r-pv
25.9 × 56.4 mm27 parts2LGPL-3.014- schematic only · 99 partsSTM32
Midimagic
herculesxe5
99 partsLGPL-3.014 
STM32STMP1-OLinuXino
OLIMEX
84 × 59.6 mm387 parts8LGPL-3.013
STM32Oro Link
oro-os
153.7 × 88.9 mm341 parts8LMIT13
STM32I8080-sbc
quasiengineer
100 × 100 mm111 parts2LNo license13
STM32Fsk energymeter
luftaquila
90 × 74 mm79 parts2LCustom license13
STM321016-Breadboard-Power-Supply
wilsondr9999
52.3 × 50.3 mm61 parts2LAGPL-3.013
STM32DCServo
Alex-C-EE
40 × 40 mm57 parts4LNo license13