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.
ESP32ESP32-C3-MINI-1
74th
20.3 × 46.4 mm22 parts2LMIT8
BRK-QFP-56-10x10-P0.65
Gekkio
45.6 × 57.3 mm5 parts2LCC-BY-4.06
Breakout sram-256x2
pbozeman
62 × 62 mm10 parts4LMIT5
ZX81 Expansion Breakout
BrettHallen
61.2 × 53.3 mm8 parts2LNo license5
DIM SN6505 PushPullConv tiled
Squantor
63.1 × 55.1 mm17 parts2LMIT4
DAC7678 16TSSOP wide
dfieschko
18.3 × 20.8 mm5 parts2LGPL-3.04
FPGAO2 breakout
m-okada
95 × 72 mm101 parts2LNo license3
AVR/Arduino328 3ch can devboard
HKUST-Red-Bird-Racing-EVRT
82.8 × 55 mm68 parts2LNo license3
RP2040/RP2350Cross point exp brd mini v2
damercer
127 × 100.3 mm54 parts2LCC-BY-SA-4.03
ESP32BrailleCellDevelopementBoard
Charmander542
55.5 × 34 mm47 parts4LNo license3
Osw light
Monacrylic
36.1 × 36.1 mm51 parts4LNo license2
WLMS-v0 2 9 daughterboard
miniscope
27.3 × 31.8 mm43 parts4LCERN-OHL-S-2.02
Isa breakout
miselin
109 × 79.8 mm9 parts2LCERN-OHL-P-2.02
LT3042 breakout
ljufa
10.2 × 14.6 mm7 parts2LMIT2
BB-XTAL
qboards
14.3 × 21.5 mm7 parts2LCC-BY-SA-4.02
16-pin analog / digital multiplexor breakout board
6r1d
26.3 × 42.3 mm5 parts2LMIT2
Daughterboard before u1 pin23 neckdown
BoomBoxRobotics
155 × 80.6 mm105 parts2LCC0-1.01
ESP32ESP32-WROOM-32E + CC1101 Multiband
bdini13
90 × 36 mm105 parts4LCustom license1
5V Development Board
chipfoundry
76.2 × 73.8 mm83 parts4LNo license1
Giga shield v05
ajokela
155 × 90 mm60 parts2LBSD-3-Clause1
RP2040/RP2350Nuclone RP2040 SOIC
50 × 50 mm56 parts4LMIT1
RP2040/RP2350RP2040 Template
palginpav
20.3 × 48.3 mm44 parts4LApache-2.01
Examples
mwwhited
152.2 × 265.6 mm41 parts2LMIT1
MOBO DEV BreadBoard
robotique-udes
39.4 × 98.5 mm35 parts4LGPL-2.01
ESP32WiFi KeyMouse
20 × 42.4 mm26 parts2LMIT1
Controller uno shield
ksmonkey123
54 × 53.3 mm22 parts2LMIT1
82C55 GPIO Unit
oberrow
52 × 72 mm11 parts4LMIT1
Electrode Breakout
TallesSantosCUBoulder
30.3 × 65.8 mm6 parts2LMIT1
ADC Theatre Bar Lighting Controller - Menu Buttons
jevans3142
29.2 × 35.6 mm5 parts2LNo license1
Sdprog
4ms
23.8 × 14.6 mm4 parts2LNo license1
5V Development Board
Rimal12345
76.2 × 73.8 mm83 parts4LNo license0
HAT ver 8
ConnectBox
57.4 × 71.6 mm72 parts2LNo license0
Hat
mikegoelzer
152.4 × 76.2 mm33 parts2LCustom license0
STM32LoRaPill
cristobalcuevas
50 × 50 mm32 parts2LNo license0
ClockModule
Robert-Riordan-UCD
81.5 × 52.5 mm30 parts2LCERN-OHL-P-2.00
ESP32ORA Arduino ESP CAN Shield Rev 2
gtrupiano
68.6 × 53.3 mm30 parts2LNo license0
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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