2,519 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.
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
BRK-QFP-44-10x10-P0.8
Gekkio
39.6 × 52.5 mm5 parts2LCC-BY-4.06
Connector breakout
oresat
40 × 87.2 mm5 parts2LCERN-OHL-S-2.06
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
Microchip SAMWLMS-v0 2 1-motherboard
miniscope
14 × 9.2 mm80 parts8LCERN-OHL-S-2.02
STM32DroneController
Monacrylic
55 × 55 mm65 parts4LNo license2
Browse boards by part
AMS1117-3.3 1261USBLC6-2SC6 1030RP2040 714W25Q128JVS 441AP2112K-3.3 400TL072 342ESP32-S3-WROOM-1 314TL074 308CH340C 287L7805 28374HC595 258Pico 256USBLC6-2P6 256LM358 233AP2112K-3.3TRG1 21974LS04 204Arduino_Nano_v3.x 201ESP32-WROOM-32 199LM7805_TO220 19774LS245 17874LS138 174SRV05-4 17474LS32 171W25Q128JVSIQ 171