2,246 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.
ESP32Pcb
NixVegas
158.5 × 137.3 mm57 parts2LCC-BY-SA-4.03
Nordic nRFGuilty devboard xrd
askiiart
17.8 × 33.2 mm55 parts6LNo license3
CANShield
MootSeeker
70 × 59 mm50 parts4LMIT3
ESP32Mini power
hnz1102
46 × 54 mm49 parts2LNo license3
STM32Stm32f412rxt stamp
Crate3D
64.8 × 31.7 mm46 parts4LGPL-3.03
ESP32ESP32Marauder
WireSeed
78.5 × 20.1 mm45 parts2LMIT3
ESP32Marauder-X
github-anton
78.5 × 20.1 mm45 parts2LMIT3
Arduino OpenTherm shield
anway0404
68.6 × 53.3 mm45 parts2LCERN-OHL-P-2.03
Assoc board
leoheck
72 × 46.5 mm44 parts4LNo license3
AVR/ArduinoShield-A
rsedak
68.8 × 53.6 mm42 parts2LCustom license3
Raccoon HAT v1 — PoE Ethernet Tap
BenjiTrapp
65 × 56 mm41 parts2LNo license3
RP2040/RP2350RP2040-Dev-Board
abhinav937
20.6 × 54 mm41 parts4LMIT3
ICE40-DAC Rev A
OLIMEX
30 × 50 mm39 parts2LApache-2.03
ShunkoBot Shield
Phersax
87.5 × 100.5 mm37 parts2LCC-BY-NC-4.03
Nordic nRFDOOOPE
JQ-C
129.9 × 98.7 mm37 parts2LNo license3
OpenCAPI Breakout
mwrnd
50 × 71 mm36 parts4LBSD-2-Clause3
STM32STM32G030 DEVBoard
VILLO88
30 × 60 mm35 parts4LNo license3
I2C multiplexer TCA9548A
SolderedElectronics
38 × 54 mm35 parts2LTAPR-OHL-1.03
RP2040/RP2350HyprboardV2
FaizeenHoque
21 × 51 mm33 parts2LNo license3
STM32Lopill
spbnick
23 × 59.5 mm32 parts2LNo license3
TI MSP430/CCNanoDD
LithosphereRocketry
37.9 × 10.2 mm32 parts2LGPL-3.03
Under-Pressure
catalinacatalinacatalina
74 × 44.5 mm30 parts2LMIT3
ESP32Esp32lcd
cjheath
78 × 44 mm30 parts2LNo license3
Arduino LMeter shield
michpro
68.6 × 53.3 mm29 parts2LCERN-OHL-P-2.03
DRV8662-breakout
BitlinkLabs
40 × 36 mm29 parts2LNo license3
AVR/ArduinoRetroShield1802
tebl
99.7 × 53.3 mm28 parts2LLGPL-2.13
STM32Stm32-board
facens-omegabotz
66 × 26 mm27 parts2LApache-2.03
RISC-VCh32v006-dev board
rmingon
25 × 41.3 mm26 parts2LNo license3
Typepak advance
ImStuBTW
51.7 × 32 mm25 parts2LMIT3
Breadboard power supply board hardware design
54 × 29.5 mm24 parts2LTAPR-OHL-1.03
ESP32Esp32-pcb bitraf
blurpy
25.4 × 55.3 mm23 parts2LMIT3
Jennic-JN5148-001-M04-breakout
atoomnetmarc
45.7 × 55.9 mm21 parts2LApache-2.03
Cf deck carrier
tomvand
33 × 28 mm20 parts4LCC-BY-4.03
PWR
macmade
74 × 72 mm17 parts2LCERN-OHL-1.23
AVR/ArduinoArduino as-ISP-shield
57.2 × 53.3 mm17 parts2LApache-2.03
ESP32Esp32-wroom shield
fadushin
34.6 × 30.3 mm15 parts2LNo license3
Browse boards by part
AMS1117-3.3 1052USBLC6-2SC6 844RP2040 613W25Q128JVS 390TL072 317AP2112K-3.3 312TL074 280ESP32-S3-WROOM-1 267CH340C 246L7805 228Pico 21974HC595 217USBLC6-2P6 203LM358 19674LS04 177AP2112K-3.3TRG1 174ESP32-WROOM-32 168SRV05-4 165Arduino_Nano_v3.x 162LM7805_TO220 15974LS245 15874LS138 153W25Q128JVSIQ 15374LS32 149