2,438 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.
NE8FDV Breakout
karlcswanson
26 × 31 mm5 parts2LMIT14
MorphESP240 to Sharp PC-G850* Interface
hwreverse
87.6 × 71.1 mm45 parts2LMIT13
Ch224base
SdtElectronics
50.9 × 18.5 mm35 parts2LCERN-OHL-W-2.013
WP-2 IC-Card MRAM 512K shielded
bkw777
54 × 54 mm27 parts2LCustom license13
Ass shield (2-я копия)
immortalserg
80 × 80 mm193 parts2LNo license12
ESP32SparkFun Thing Plus ESP32-S3 panelized
sparkfun
106.6 × 205.2 mm59 parts4LMIT12
MounT WP2 Feather
50.8 × 22.9 mm10 parts2LGPL-3.012
SparkFun GNSS UM980 panelized
121.9 × 115.8 mm76 parts4LMIT11
ESP32Adafruit ESP32-S3 8MB No PSRAM
cgallizzi
50.8 × 22.9 mm44 parts2LMIT11
WideWiig
Architeuthis-Flux
78.7 × 63.5 mm502 parts4LMIT10
AVR/ArduinoECP5U85-BSE-USB Test Board
open-ephys
150 × 150 mm91 parts4LCustom license10
RISC-VCH32V203-ProMicro-Like
74th
17.8 × 33 mm27 parts2LMIT10
USB power serial breakout
dbuchwald
53.3 × 26.7 mm20 parts2LMIT10
1 CH 4-20 mA to voltage converter board
Fescron
32.4 × 24.8 mm8 parts2LNo license10
Ecp dac8
jboone
45 × 25 mm20 parts2LNo license9
Bread board power supply
Ikarthikmb
30 × 52.8 mm14 parts2LNo license9
Raspberry PiBartender pi hat
dburnsii
16.8 × 55 mm7 parts2LGPL-2.09
Keyboard connector breakout
bluepylons
26 × 54 mm4 parts2LNo license9
AVR/ArduinoOpenHardwareExG Shield Test Board
OpenElectronicsLab
147.3 × 81.3 mm124 parts4LCERN-OHL-1.28
ESP32LAN-Module-PoE
jorticus
25.3 × 61 mm100 parts2LCERN-OHL-S-2.08
ESP32ESP32-Writer
54.6 × 31.1 mm29 parts2LMIT8
Luxeon c
Jana-Marie
42 × 42 mm26 parts2LCERN-OHL-S-2.08
STM32Teensy SFOC
wgbowley
100 × 80 mm19 parts2LMIT8
SmartLED Shield Breakout
coelacant1
45.8 × 38 mm18 parts2LGPL-3.08
ESP32Smart plants breakout ws board rev2
vektorious
48 × 70 mm17 parts2LMIT8
Jst breakout
cyberboy666
20 × 29.9 mm3 parts2LGPL-3.08
Rp adapter
ka6s
120.6 × 142 mm92 parts4LCustom license7
Raspberry PiLamoka1-DEV-board
bearjhartjen
70 × 30 mm48 parts2LCERN-OHL-W-2.07
UsbaCarrierMM8108 revC
JeffersonSchostakovich
31 × 17 mm23 parts2LNo license7
A10 OLinuXino Lime Rev-B SHIELD TEMPLATE
videobrick
53.2 × 59.6 mm5 parts2LNo license7
USB-C female connector breakout
SolderedElectronics
22 × 22 mm4 parts2LTAPR-OHL-1.07
Mariner 1-A
BroncoSpace-Lab
100 × 100 mm235 parts6LNo license6
Mcp25625-breakout ssop28
asukiaaa
27.9 × 14 mm10 parts2LNo license6
MIDI IN Breakout Board
TuDo-Makerspace
20.3 × 62 mm9 parts2LNo license6
Adafruit USB Type C Downstream Breakout rev B
Makerville
20.3 × 14 mm6 parts2LCERN-OHL-P-2.06
BRK-QFP-32-7x7-P0.8
Gekkio
39.6 × 52.5 mm5 parts2LCC-BY-4.06
Browse boards by part
AMS1117-3.3 1196USBLC6-2SC6 983RP2040 699W25Q128JVS 421AP2112K-3.3 376TL072 339TL074 307ESP32-S3-WROOM-1 304CH340C 274L7805 271Pico 25174HC595 248USBLC6-2P6 248LM358 228AP2112K-3.3TRG1 205Arduino_Nano_v3.x 19774LS04 193LM7805_TO220 185ESP32-WROOM-32 18274LS245 171SRV05-4 169W25Q128JVSIQ 16974LS138 16274LS32 161