2,545 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.
ESP32ESP32-S3-WROOM-2 Dev Board
CafeAsh
28.6 × 48.5 mm29 parts4LNo license0
TUSS4470 shield
kelu124
69 × 53.8 mm29 parts2LNo license0
AVR/ArduinoNano original
feastorg
43.2 × 18 mm26 parts2LGPL-3.00
Board-B-sma
Brunner-neutrino-lab
74.8 × 149.1 mm25 parts4LNo license0
MAPS-010164-TR0500 Eval Board
yilmaz-kaan
48.5 × 38.8 mm23 parts2LNo license0
5v PSU
DomAtTheShack
132 × 104.5 mm21 parts2LNo license0
Jetson AGX Orin CAN Adapter
Mouse-GYM
63 × 23.5 mm18 parts2LNo license0
BreadboardPowerSupply
Darshan7052006
29.7 × 53.6 mm17 parts2LNo license0
AVR/ArduinoShield
rjacoby00
94 × 91.4 mm17 parts4LNo license0
ESP32Main Board B2023 Shield
Falcon-Mauricio
77.6 × 55 mm14 parts2LNo license0
TPA6111A2-breakout
mjhagen
37 × 24.5 mm14 parts2LNo license0
Sensor
micthiesen
18 × 64 mm14 parts4LNo license0
Breadboard Power Supply
CrtomirJuren
30.5 × 52.1 mm12 parts2LNo license0
Fab-Drawing caravel-M.2-card-QFN
nic0villegasc
22 × 22 mm11 parts4LNo license0
Shield Adruino MEGA2560 Rev3
NadjB
101.6 × 53.3 mm10 parts2LNo license0
LM555 Testboard
itsebuka
50 × 40 mm10 parts2LMIT0
Lumenier Carrier Board
CabrilloRoboticsClub
50 × 64 mm7 parts2LMIT0
PCA9548A Breakout
chuahengli
66 × 76.2 mm7 parts2LNo license0
Meshgw hat routed
d3athstr
65 × 56 mm5 parts2LNo license0
RP2040/RP2350DS18B20-Breakout-Board
enolf
25 × 14 mm3 parts2LNo license0
Microstrip
Jameswill-Winsock
100 × 40 mm3 parts2LGPL-3.00
Breakout 10TSSOP
piercehowell
21.6 × 19.1 mm3 parts2LMIT0
Tiwi breakout
jekhor
38.7 × 55.9 mm3 parts2LNo license0
Daughterboard
Ovens-Syntax
27.9 × 45.4 mm3 parts2LGPL-3.00
Usb c intercept
leo60228
27.9 × 62.2 mm3 parts2LNo license0
Carrier 2cell
DashiellRussell
111.5 × 47.8 mm3 parts2LNo license0
DRV8825-breakoutBoard
louisbabeschneider
19 × 36.6 mm3 parts2LNo license0
88 Pin Vag Breakout
rusefi
142 × 58 mm91 parts2LGPL-3.01.2k
AVR/ArduinoEasyduino Atmega Nano
Hanqaqa
43.4 × 18 mm30 parts4LCERN-OHL-P-2.0746
Hat
pa3gsb
65 × 56 mm81 parts2LNo license675
ESP32L0 ESP32
Luos-io
20.3 × 34.8 mm23 parts2LMIT547
ESP8266RatGDO-OpenSource-D1Mini-ESP8266
Kaldek
47.8 × 63.3 mm12 parts2LMIT506
ESP32
Chrismettal
66.4 × 48.1 mm20 parts2LCC-BY-SA-4.0446
ESP32ESP32-PoE Rev M2
OLIMEX
28 × 80 mm131 parts4LApache-2.0407
Panel proto data slicer board
PantsForBirds
56 × 37.5 mm13 parts2LGPL-3.0322
ESP32ESP32-EVB
75.2 × 74.7 mm157 parts2LApache-2.0285
Browse boards by part
AMS1117-3.3 1261USBLC6-2SC6 1030RP2040 714W25Q128JVS 441AP2112K-3.3 400TL072 342ESP32-S3-WROOM-1 314TL074 308CH340C 287L7805 28374HC595 258Pico 256USBLC6-2P6 256LM358 233AP2112K-3.3TRG1 21974LS04 204Arduino_Nano_v3.x 201ESP32-WROOM-32 199LM7805_TO220 19774LS245 17874LS138 174SRV05-4 17474LS32 171W25Q128JVSIQ 171