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.
XIAO LCD
bitbank2
40.1 × 31.7 mm7 parts2LApache-2.016
STM32F407VET6 Hat Pin Header Adapter
gianlucarenzi
72.4 × 85.2 mm18 parts2LGPL-3.014
Mesp240 irmaster
hwreverse
76.2 × 69.4 mm27 parts2LMIT13
MiniBLDCpwr
SdtElectronics
31.6 × 31.6 mm21 parts2LCERN-OHL-W-2.013
WP-2 IC-Card ROM
bkw777
54 × 54 mm6 parts2LCustom license13
Raspberry PiBabana pi zero
immortalserg
60.3 × 71.4 mm8 parts2LNo license12
WaferSpaceCOB
Architeuthis-Flux
82.6 × 50 mm28 parts4LMIT10
RISC-VCH32V006-full
74th
20.3 × 47 mm19 parts2LMIT10
AVRISP breakout
dbuchwald
17.8 × 17.8 mm3 parts2LMIT10
ESP32ESP32-C6-WROOM-1 Dev Board
25.4 × 36.8 mm22 parts2LMIT8
EV-BA33Dxx
Gekkio
20 × 29 mm5 parts2LCC-BY-4.06
Breakout sram
pbozeman
62 × 62 mm6 parts4LMIT5
DRV BREAKOUT BOARD
bismarx-v1
18.8 × 21.4 mm3 parts2LNo license5
DIM VPS8505 PushPullConv tiled
Squantor
73.3 × 55.1 mm17 parts2LMIT4
Pi HAT Simple V3
danielwilczak101
68.8 × 71.3 mm11 parts2LNo license4
LevelShifter
Manuvr
14.9 × 37.7 mm7 parts4LNo license4
FDC1004Q-Breakout
dfieschko
14.6 × 12.3 mm4 parts2LGPL-3.04
RP2040/RP2350Cross point exp brd mini smd
damercer
127 × 100.3 mm51 parts2LCC-BY-SA-4.03
Lightboard
Charmander542
13 × 33.9 mm14 parts2LNo license3
X osw light
Monacrylic
36.1 × 36.1 mm51 parts4LNo license2
Timer usb board v0 2
miniscope
40 × 40 mm29 parts4LCERN-OHL-S-2.02
STM32Stm8 breakout board
akuker
21.8 × 26.9 mm23 parts2LBSD-3-Clause2
AVR/ArduinoArduino Shield
IllinoisRoboticsInSpace
115 × 75 mm21 parts2LNo license2
Adl5606-breakout
MTalon63
36.6 × 13.9 mm18 parts6LCustom license2
Compe6502 SD Breakout
rjhelms
50.8 × 31.8 mm9 parts2LNo license2
Bb tqfp qfn-32
qboards
20.3 × 40.6 mm6 parts2LCC-BY-SA-4.02
Daughterboard before 3v3 logic branch
BoomBoxRobotics
155 × 80.6 mm104 parts2LCC0-1.01
ESP32ESP32-WROOM-32E + CC1101 Multiband
bdini13
90 × 36 mm91 parts4LCustom license1
Caravel
chipfoundry
54.5 × 52.1 mm72 parts2LNo license1
Microchip SAMSAMD51 dev board
BrownSpaceEngineering
98.9 × 130 mm58 parts4LNo license1
RP2040/RP2350Nuclone RP2040 SON
50 × 50 mm56 parts4LMIT1
AlexJ bz ArduinoGigaShield
ajokela
155 × 90 mm55 parts2LBSD-3-Clause1
NXPMicro Breakout
ryos17
123.5 × 83 mm48 parts2LNo license1
Regulator7913-1
mwwhited
127.5 × 100 mm34 parts2LMIT1
ESP8266ESP8266
Chirag-Vadrali
63 × 61.2 mm29 parts2LNo license1
STLoRa Carrier Board
collins-emasi
96 × 45.7 mm22 parts4LNo license1
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