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.
Raspberry PiSdfsdf
lightningspore
100 × 100 mm19 parts2LNo license11
ShinyBarnacle
Architeuthis-Flux
41.3 × 58 mm419 parts2LMIT10
RISC-VCh32v003-promicro
74th
17.8 × 33 mm24 parts2LMIT10
SoftPower breakout
dbuchwald
44.5 × 53.3 mm17 parts2LMIT10
Raspberry PiRaspberry Pi Full Stack HAT
Ikarthikmb
24 × 27.9 mm9 parts2LNo license9
AVR/ArduinoBartender arduino hat
dburnsii
21.5 × 19 mm4 parts2LGPL-2.09
AVR/ArduinoOpenHardwareExG Shield Test Board all panelled
OpenElectronicsLab
147.3 × 81.3 mm124 parts4LCERN-OHL-1.28
ESP32LAN-Module
jorticus
28.6 × 53.3 mm89 parts2LCERN-OHL-S-2.08
AVR/ArduinoLED-shield
RepRapLtd
68.6 × 53.3 mm28 parts2LGPL-3.08
ESP32ESP32-Write-CH9102F
34.3 × 19.5 mm25 parts2LMIT8
JH-18ZRGBWZYV14G45
Jana-Marie
42 × 42 mm6 parts2LCERN-OHL-S-2.08
Noname
ka6s
120.6 × 142 mm91 parts4LCustom license7
UsbCarrierMM8108
JeffersonSchostakovich
31 × 17 mm23 parts2LNo license7
AVR/ArduinoATtiny 816/1616 Minibadge Devboard
Pips801
19 × 16.8 mm12 parts2LNo license7
USB-C female connector breakout panel
SolderedElectronics
0 × 0.1 mm4 parts2LTAPR-OHL-1.07
Connector breakout
oresat
40 × 87.2 mm5 parts2LCERN-OHL-S-2.06
BRK-QFP-44-10x10-P0.8
Gekkio
39.6 × 52.5 mm5 parts2LCC-BY-4.06
FPGAVanilla ice40
pbozeman
100 × 62 mm100 parts4LMIT5
Stm32u595-breakout
73.1 × 69.8 mm61 parts4LNo license5
Hat
wang-edward
65 × 56 mm58 parts4LMIT5
Shield exp430fr2355
xtarke
78.4 × 51.2 mm47 parts2LGPL-3.05
Microchip SAMAtsamd21e18a
jkiv
15.2 × 31.8 mm25 parts4LCC-BY-NC-4.05
Magpie SAO
joshajohnson
49 × 36.6 mm7 parts2LGPL-3.05
NXPClarinoid devboard
thenfour
257 × 174 mm112 parts2LNo license4
AVR/ArduinoAT90S1200/AT90S2313 demo board
atoomnetmarc
99.1 × 99.1 mm30 parts2LApache-2.04
Module CH224K USB-C PD-sink tiled
Squantor
83.8 × 55.6 mm25 parts2LMIT4
Ts15-rpi shield
tropicsquare
56 × 65 mm11 parts2LCERN-OHL-P-2.04
74HC365 breakout
slonket
14 × 27.9 mm5 parts2LMIT4
AD7156-Breakout
dfieschko
13.2 × 15.8 mm5 parts2LGPL-3.04
PiCoCo-Cobbler
cognitivegears
62.3 × 23.5 mm3 parts2LCC-BY-SA-4.04
DotBot Shield Template
DotBots
29 × 27 mm3 parts4LBSD-3-Clause4
AVR/ArduinoUno hat dev
Charmander542
155 × 58.1 mm98 parts2LNo license3
Cross point exp brd mini red2-m2k
damercer
121.9 × 75.6 mm96 parts2LCC-BY-SA-4.03
Ch55xGpthUSB
SdtElectronics
16.3 × 25.3 mm11 parts2LNo license3
Feather LORA
M2I-HABET
100 × 100 mm10 parts2LNo license3
AVR/ArduinoRr dev board
frep
100 × 80 mm100 parts2LNo license2
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