2,573 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.
NRF24 Breakout
AravinthPanch
31.8 × 30.5 mm3 parts2LApache-2.016
RP2040/RP2350Groundstation 2400 Hat
stanford-ssi
65 × 56.5 mm10 parts4LNo license13
BreakoutBrd
SdtElectronics
21.7 × 64.6 mm3 parts2LCERN-OHL-W-2.013
WP-2 IC-Card Programming Adapter virt
bkw777
17.8 × 49.5 mm3 parts2LCustom license13
FullProto
Architeuthis-Flux
84.5 × 57.6 mm11 parts2LMIT10
ESP32ESP32-writer
74th
31.8 × 30.6 mm18 parts2LMIT8
PCB1007-Axoloti Breakout
Believotron
160 × 48 mm20 parts2LMIT5
Breakout FLASH SOIC tiled
Squantor
65.5 × 45.2 mm7 parts2LMIT4
Fifty pin header breakout
akuker
72.5 × 81 mm7 parts2LBSD-3-Clause2
Rect 22 18
miniscope
18 × 22 mm6 parts6LCERN-OHL-S-2.02
USBC Breakoutboard
coffee-and-telesense
18.3 × 17.9 mm6 parts2LNo license2
Bb soic ssop-8
qboards
17.8 × 10.2 mm4 parts2LCC-BY-SA-4.02
Daughterboard before usb j1 net fix
BoomBoxRobotics
155 × 80.6 mm104 parts2LCC0-1.01
RP2040/RP2350Nuclone pi pico USB-c
50 × 76.2 mm20 parts2LMIT1
AGS Solenoid Breakout D9
HelloItzAlex
50.8 × 63.5 mm18 parts2LNo license1
Grove Expander
13.5 × 65 mm17 parts2LMIT1
Eth uart breakout
OJ2016
60 × 39.3 mm14 parts2LNo license1
Carvel Breakout board as M.2 Card
chipfoundry
22 × 22 mm11 parts4LNo license1
BNO BREAKOUT
robotique-udes
42 × 61.1 mm10 parts2LGPL-2.01
Shield 75
robotronik
35.6 × 21.6 mm8 parts2LNo license1
Shield 75
35.6 × 21.6 mm8 parts2LNo license1
Hornet shield
ograsdijk
58.7 × 77.5 mm7 parts2LNo license1
ConnectBox HAT-A
ConnectBox
41.6 × 79.2 mm54 parts4LNo license0
ESP32ESP DEV BOARD
hamayanShowa-ele
76 × 92 mm42 parts2LNo license0
AVR/ArduinoPCB shield
AbdELRahmanGamiel
74.8 × 60.1 mm23 parts2LNo license0
Breakout 80pin 1393476-Connector
lanjay1
144 × 58 mm21 parts2LGPL-3.00
STM32STM32F030
cristobalcuevas
30 × 31 mm14 parts2LNo license0
XDuinoRail-Breakout-DRV8874
chatelao
29.8 × 17.8 mm13 parts2LAGPL-3.00
Caravel-M.2-card-QFN
Rimal12345
22 × 22 mm11 parts4LNo license0
Sx1308 breakout
ep-infosec
30 × 30 mm11 parts2LCC-BY-4.00
ESP32ORA Arduino ESP Shield
gtrupiano
74 × 60.6 mm5 parts2LNo license0
Breakout 60pin EEC-IV
rusefi
139.7 × 62.2 mm15 parts2LGPL-3.01.2k
L0 IMU MPU9250
Luos-io
20.3 × 15.2 mm7 parts2LMIT547
ESP32ESP32-PoE Rev D
OLIMEX
28 × 75 mm116 parts2LApache-2.0407
Proto ufl pi board
PantsForBirds
19 × 8 mm5 parts2LGPL-3.0322
ESP32ESP-EVB
75.2 × 74.7 mm143 parts2LApache-2.0285
Browse boards by part
AMS1117-3.3 1287USBLC6-2SC6 1056RP2040 725W25Q128JVS 444AP2112K-3.3 408TL072 347ESP32-S3-WROOM-1 324TL074 308CH340C 290L7805 29074HC595 267USBLC6-2P6 260Pico 258LM358 237AP2112K-3.3TRG1 22474LS04 207ESP32-WROOM-32 203Arduino_Nano_v3.x 202LM7805_TO220 20174LS245 18474LS138 176SRV05-4 17674LS08 17574LS32 175