2,438 open source boards in Dev boards & breakouts
Development boards, breakouts, shields, HATs and carrier boards. 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.
Panelized veryTinyPi
HynixCJR
49.1 × 48.6 mm35 parts6LGPL-3.00
RP2040/RP2350Pass2
lnvke
21 × 51 mm35 parts2LCERN-OHL-W-2.00
AVR/ArduinoRover motor hat
dark-Phoenix2077
54 × 24 mm34 parts4LNo license0
Subsystem SPI Breakout v4
cmsc-stageworks
85.8 × 53.3 mm33 parts2LNo license0
AVR/ArduinoATmega32u4 Development Board
CafeAsh
25.5 × 40.7 mm33 parts4LNo license0
AVR/ArduinoMie1001 daq simple
Chaospossum
68.6 × 53.3 mm31 parts2LNo license0
Uno Shield For NASA
LandryEllis
68.6 × 53.3 mm30 parts2LNo license0
RP2040/RP2350RP2040 Minimal Design Example
Ovens-Syntax
52 × 51 mm30 parts2LGPL-3.00
VS1163A-breakout
mjhagen
42.2 × 42.2 mm29 parts2LNo license0
RGB LCD RPi3 HAT
CrtomirJuren
65 × 56 mm28 parts2LNo license0
Igloo64 08 Prototyping Board
anachrocomputer
96.5 × 90.2 mm28 parts2LNo license0
I2c signal isolator production
juarendra
48 × 32.4 mm27 parts2LNo license0
Toasterboard
Camuise
64.5 × 46.5 mm27 parts2LNo license0
RP2040/RP2350Pico flicker shield
Samuel20040521
128.7 × 75.4 mm26 parts2LNo license0
Board-A-mcx
Brunner-neutrino-lab
74.8 × 125.1 mm26 parts4LNo license0
AVR/ArduinoNano every
feastorg
43.2 × 17.8 mm26 parts2LGPL-3.00
STM32 shield panel
mnk
174 × 122 mm21 parts2LNo license0
Mcr shield
alanswx
135 × 95 mm20 parts2LNo license0
4 Bit MONSTROSITY
ChetanMandloi
113.7 × 62.9 mm19 parts2LGPL-3.00
LiPo Battery Charger
itsebuka
50 × 50 mm18 parts2LMIT0
Raspberry PiDevboard
Yarnemeuris
39.4 × 52.1 mm18 parts2LNo license0
Shield
HussainAhmed11
87.7 × 82.2 mm17 parts2LBSD-2-Clause0
Breadboard Power Supply
crisramil
29.7 × 53.6 mm17 parts2LNo license0
USB UART Breakout
maumana25
39.5 × 24 mm14 parts2LMIT0
RP2040/RP2350Mcu breakout
chof747
47 × 59.5 mm13 parts2LCC0-1.00
GPIO LCD bench adapter
TensorFleet
63.5 × 32 mm12 parts4LCERN-OHL-S-2.00
Butane, LPG & Smoke sensor MQ2 breakout
Mostakim52
22 × 38 mm12 parts2LMIT0
Truss connector breakout
practable
34.3 × 99.7 mm9 parts2LAGPL-3.00
Hat circuit x1
muhaimin44
24.6 × 38.7 mm9 parts2LNo license0
AVR/ArduinoRN2483shield
MOSH-Insa-Toulouse
68.9 × 53.6 mm8 parts2LNo license0
PWM-TRANSISTOR
AugustoS97
26.4 × 23.9 mm8 parts2LGPL-3.00
Fsr pro micro shield
Chris-SG
60 × 60 mm8 parts2LNo license0
Panel
leo60228
77.1 × 94.2 mm7 parts2LNo license0
SHT30 breakout
Yadnik1
26.4 × 17.5 mm6 parts2LNo license0
H field probe 1x3mm
Jameswill-Winsock
100 × 20 mm5 parts4LGPL-3.00
Carrier 3cell
DashiellRussell
111.5 × 69.5 mm5 parts2LNo license0
Browse boards by part
AMS1117-3.3 1196USBLC6-2SC6 983RP2040 699W25Q128JVS 421AP2112K-3.3 376TL072 339TL074 307ESP32-S3-WROOM-1 304CH340C 274L7805 271Pico 25174HC595 248USBLC6-2P6 248LM358 228AP2112K-3.3TRG1 205Arduino_Nano_v3.x 19774LS04 193LM7805_TO220 185ESP32-WROOM-32 18274LS245 171SRV05-4 169W25Q128JVSIQ 16974LS138 16274LS32 161