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.
Bb led
qboards
11 × 5 mm4 parts2LCC-BY-SA-4.02
Daughterboard before add j30 5v uart pad
BoomBoxRobotics
155 × 80.6 mm104 parts2LCC0-1.01
Hat
glovepost
108 × 115.8 mm83 parts4LMIT1
Caravel 3.3V Development Board
chipfoundry
76.2 × 73.8 mm68 parts2LNo license1
RP2040/RP2350Nuclone RP2040 WSON
Squantor
50 × 50 mm56 parts4LMIT1
74TH-G070-USB Power Adapter
74th
36 × 23 mm20 parts2LMIT1
NavIC GNSS
Chirag-Vadrali
35 × 35 mm19 parts4LNo license1
LVDS
himanshu40304
70 × 50 mm10 parts4LNo license1
Tortoise Breakout RJ-45
acwright
50 × 50 mm4 parts2LMIT1
Electrode Select Breakout
TallesSantosCUBoulder
36.3 × 46.2 mm3 parts2LMIT1
AS6C1008 RAM Unit
oberrow
32 × 50 mm3 parts2LMIT1
Rj45 breakout
coon42
15.2 × 53.8 mm3 parts2LGPL-3.01
Caravel dev v5-M.2
Rimal12345
76.2 × 73.8 mm68 parts2LNo license0
HAT ver 6.0
ConnectBox
56.6 × 71.6 mm68 parts2LNo license0
STM32Arduino can bus shield canbus custom
SamsonChau
53.3 × 56.4 mm47 parts2LNo license0
Breakout 112pin Connector
lanjay1
174 × 58 mm39 parts2LGPL-3.00
ESP32Esp wroom-2-carrier board
cpeniche
33.8 × 34.4 mm31 parts4LNo license0
ESP32ESP32 Dev Board Clone
Paa-Kwasi-04
67.5 × 78.3 mm31 parts2LNo license0
XDuinoRail-Breakout-Motor-BDR6133
chatelao
27.3 × 37.5 mm26 parts2LAGPL-3.00
ACDC switching
cristobalcuevas
108 × 48.3 mm24 parts2LNo license0
MemoryAccessRegister
Robert-Riordan-UCD
84.3 × 39.3 mm22 parts2LCERN-OHL-P-2.00
ORA Arduino ESP CAN Shield Rev 1.1
gtrupiano
68.6 × 53.3 mm18 parts2LNo license0
Qmtech sram
DaveRichmond
39 × 82.6 mm14 parts2LCustom license0
Lora nicerf hat
charlieh0tel
65 × 30.5 mm9 parts4LBSD-3-Clause0
WCH CH32/CH55xExpanders
koko69420
21.1 × 26.8 mm9 parts2LNo license0
Relay board
CrtomirJuren
180 × 120 mm8 parts2LNo license0
BM83 breakout
Scaniox
65 × 32 mm8 parts2LNo license0
Shield airpump
TrendBit
20.1 × 22 mm7 parts2LGPL-3.00
4xOLED-Rev1
mikegoelzer
62.1 × 108.1 mm5 parts2LCustom license0
134pin 7-967288-1
rusefi
139.7 × 73.7 mm38 parts2LGPL-3.01.2k
L0 Dynamixel
Luos-io
20.3 × 15.2 mm15 parts2LMIT547
ESP32ESP32-PoE Rev I
OLIMEX
28 × 75 mm122 parts4LApache-2.0407
Digital IO Breakout
nanographs
28 × 80 mm6 parts2LNo license370
Panel proto tracking comparator board
PantsForBirds
68 × 45 mm8 parts2LGPL-3.0322
ESP32ESP-EVB
75.2 × 74.7 mm145 parts2LApache-2.0285
RP2040/RP2350Simple keeb reuser
CRImier
49 × 44 mm70 parts2LGPL-3.0253
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