2,363 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.
ESP32Astra board
verIdyia
60 × 40 mm53 parts2LNo license0
AVR/ArduinoFTUno
HackableElectronics
68.6 × 53.4 mm52 parts2LGPL-3.00
Raspberry PiCM5-Carrier-Board
AsadImranRafique
120 × 40 mm52 parts6LApache-2.00
STM32PneumaticPaddleShifting
DallasFormulaRacing
156.6 × 143.1 mm52 parts4LNo license0
RP2040/RP2350Picoarc
naorunaoru
50 × 20 mm51 parts4LMIT0
RP2040/RP2350PicoCAN
AdrianR3
21 × 51.5 mm51 parts2LNo license0
ESP32Claude ir
njdancer
92 × 44 mm51 parts2LNo license0
Nordic nRFBluBoard
cubit010
25.8 × 51.2 mm51 parts6LNo license0
AVR/ArduinoNano shield
feastorg
68 × 53 mm50 parts2LGPL-3.00
RP2040/RP2350Hybrid-Pico
shourya2007mittal-hub
21 × 51 mm50 parts2LNo license0
Tla probe sma breakout
farlepet
54 × 64 mm49 parts2LGPL-3.00
ESP32Steer32
jpt1729
29 × 62.2 mm49 parts2LNo license0
STM32Stm32c071 embedded board
ondrejjel
60 × 60 mm49 parts4LMIT0
Xinghongpai nearlink dev board
HuaqiuOpenHardware
96 × 70 mm49 parts2LCustom license0
ESP32ESP32-S3-Dev-Board
Vibhors-Tech-Hub
70.1 × 26.6 mm48 parts4LNo license0
RP2040/RP2350Raspberry pi pico development board
Srushti-D-Hebbar
39.1 × 57.5 mm48 parts2LMIT0
ESP32Adafruit QT Py ESP32-S3
gkuegler
17.8 × 20.7 mm47 parts4LNo license0
STM32VantageF401RE
AthulKrishnaGirish
80 × 60 mm47 parts2LNo license0
ESP32Esp32c3
souptik-samanta
40.8 × 20 mm47 parts4LNo license0
STM32Project tarkus
blfp1
94 × 48 mm46 parts2LNo license0
Arduino OpenTherm shield
michpro
68.6 × 53.3 mm46 parts2LCERN-OHL-P-2.00
STM32Cube SAT
barcklay
95.9 × 90.2 mm46 parts4LNo license0
RP2040/RP2350Pokemon-Devboard
sahilchess
68.6 × 53.3 mm46 parts2LNo license0
STM32Stm32f103c8t6-devboard
heimdilon
74.5 × 57.4 mm45 parts2LNo license0
RP2040/RP2350Helix
arnv15
37 × 75 mm45 parts2LNo license0
ESP32666 Marauder
DEMaxONe
78.5 × 20.1 mm45 parts2LMIT0
AT89s51-dev board
21shravan
54.5 × 90 mm44 parts2LNo license0
MFM ST506 Breakout Board
ForgottenMachines
195.6 × 87.6 mm44 parts2LNo license0
NXPObdee wan canobi
monstro-das-bolachas
230 × 115 mm44 parts2LCERN-OHL-P-2.00
Microchip SAMMcu board samd51
1ln
56.5 × 65.5 mm44 parts2LNo license0
Microchip SAMMicrochip-ATSAME54-Development-Board
Albinjm72
44.7 × 76.6 mm44 parts2LCERN-OHL-S-2.00
STM32STM32-4Layer-Wireless-CoreBoard
gorkemguven
60.6 × 26.5 mm43 parts4LMIT0
RP2040/RP2350Devboard
bobis1
39.3 × 51.7 mm43 parts2LNo license0
BB-STM32WL Dev Board
tkraf
48 × 51 mm42 parts2LNo license0
Microchip SAMCam Hat Case Study
auxren
65 × 30 mm42 parts2LMIT0
RP2040/RP2350Qx rp2040-carrier
manhoosbilli1
66.4 × 64.4 mm42 parts2LNo license0
Browse boards by part
AMS1117-3.3 1069USBLC6-2SC6 866RP2040 632W25Q128JVS 394TL072 319AP2112K-3.3 313TL074 281ESP32-S3-WROOM-1 268CH340C 249L7805 229Pico 22174HC595 218USBLC6-2P6 206LM358 20074LS04 180AP2112K-3.3TRG1 179ESP32-WROOM-32 169LM7805_TO220 167SRV05-4 165Arduino_Nano_v3.x 16474LS245 160W25Q128JVSIQ 15774LS138 15574LS32 152