2,519 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.
LED Bar - 8P
michaelkamprath
12.1 × 23.4 mm10 parts2LCC0-1.01
PS5 Thumbstick Breakout Board
oxy-2
25.4 × 31.8 mm6 parts2LMIT1
GPIB Breadboard Breakout
Elemecca
15.8 × 95.3 mm3 parts2LNo license1
IN12 Carrier Board
drewsum
200 × 50 mm195 parts4LNo license0
ESP32DSP-Regulator-HAT-RevC
Phil-CIA
100 × 102.6 mm158 parts2LNo license0
AVR/ArduinoConnectBox HAT using RPi CM4
ConnectBox
105 × 78 mm130 parts4LNo license0
Adau1701-breakout
zOnlyKroks
80 × 40.3 mm92 parts2LCC0-1.00
Clear dev v1
Rimal12345
76.2 × 73.8 mm84 parts2LNo license0
UrchinCam 01
nickraymond
31.5 × 65 mm70 parts4LNo license0
AVR/ArduinoLaser-Guided Tracking Servo Breadboard
MVaugn
182.9 × 114.3 mm66 parts2LNo license0
Console Breakout
adarwoo
66 × 107 mm64 parts2LNo license0
XDuinoRail-Breakout-RailcomDetect
chatelao
49.5 × 49.5 mm47 parts2LAGPL-3.00
Channel
Brunner-neutrino-lab
138 × 52 mm45 parts4LNo license0
AVR/ArduinoArduino
cristobalcuevas
68.6 × 53.3 mm45 parts2LNo license0
Sun-KBD-Interface
DaveRichmond
88.9 × 57.2 mm40 parts2LCustom license0
STM32STM32H755ZI breakout board
LiU-SeeGoals
70 × 95 mm38 parts4LNo license0
Caravel pcb v3 MCP
pohantw
85.9 × 74.2 mm38 parts2LNo license0
Qcpu eval board
AvalonSemiconductors
82 × 56.1 mm33 parts4LApache-2.00
STM32Capstone Keyboard Design
livid05
25.8 × 72.1 mm31 parts4LNo license0
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
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
AVR/ArduinoShield
rjacoby00
94 × 91.4 mm17 parts4LNo license0
BreadboardPowerSupply
Darshan7052006
29.7 × 53.6 mm17 parts2LNo license0
TPA6111A2-breakout
mjhagen
37 × 24.5 mm14 parts2LNo license0
Sensor
micthiesen
18 × 64 mm14 parts4LNo license0
ESP32Main Board B2023 Shield
Falcon-Mauricio
77.6 × 55 mm14 parts2LNo 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
PCA9548A Breakout
chuahengli
66 × 76.2 mm7 parts2LNo license0
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