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.
ESP32Marauder csi StickC Plus2
devedale
78.5 × 20.1 mm45 parts2LMIT1
ESP32Esp32-Code
osmnabyram
78.5 × 20.1 mm45 parts2LNo license1
PS-8051-EVB
PrajyotDaphal
154.2 × 110.8 mm44 parts2LMIT1
Nordic nRFNrf52 rev a2
xil-se
48.3 × 48.3 mm44 parts2LNo license1
AVR/ArduinoShield-B
rsedak
69.1 × 53.9 mm44 parts2LCustom license1
Breakout
akashihi
100 × 100 mm43 parts4LNo license1
RP2040/RP2350Macro microcontroller-2
Nicholas1023
96.5 × 35.6 mm43 parts2LCERN-OHL-W-2.01
ESP32O-hareAir
Will946
53.1 × 57.7 mm43 parts2LMIT1
RP2040/RP2350Pico-Devboard
lekangji
21 × 51 mm42 parts2LNo license1
STM32Shield stm2025
Rami-Troudi
83.6 × 107.3 mm42 parts2LNo license1
ESP32CUSTOM-ESP32-C3-MINI
sasukeop108
25.2 × 50.8 mm42 parts2LMIT1
Raspberry Pi2026-FE-The-Rdacted
Spaceflakes
65 × 56 mm42 parts4LNo license1
FPGANorthernStudios-FPGA-Dev-Board
uzzambutt
27.2 × 64.8 mm42 parts6LMIT1
AT86RF215-Breakout-Board
udayVsSharda
75 × 50 mm42 parts4LCERN-OHL-P-2.01
AVR/ArduinoShield-A V2.0.1
68.8 × 53.6 mm42 parts2LCustom license1
Esp32-shield v1
ANTzacalie
150 × 80 mm41 parts2LCERN-OHL-P-2.01
RP2040/RP2350Fredboard
Thebucket-ops
51 × 21 mm41 parts2LMIT1
ModbusRTU-Test-Shield
CMB27
68.6 × 53.3 mm40 parts2LCERN-OHL-P-2.01
Nordic nRFNrf52board
dimka-rs
27.9 × 59.7 mm40 parts2LNo license1
STM32STM32F103RCT6-Dev-Board
TylerJulian
44.5 × 63.5 mm40 parts2LNo license1
AVR/Arduino2019 USBasp
uwezi
53.3 × 34.3 mm39 parts2LGPL-3.01
STM32Stm32f103c8t6-qwiic
petrovgp
58.4 × 22.7 mm39 parts2LCC0-1.01
NXPTeenG5
septentrio-gnss
62.8 × 27 mm39 parts4LNo license1
TJA1055-3-Breakout-Board
korni92
44.5 × 53.5 mm38 parts2LNo license1
AVR/ArduinoAtMega Dev Boards
adsehgal
100 × 100 mm38 parts2LNo license1
STM32STM32F407-Development-Board
sagpariyavishnu991
101.8 × 80.6 mm38 parts4LNo license1
RP2040/RP2350DevBoard-202
ThongNQ867
30 × 51 mm38 parts2LNo license1
BLDC
paulmikael02
90 × 42 mm38 parts2LNo license1
Rpi power hat
KPI-Rover
65 × 56.5 mm38 parts2LNo license1
RP2040/RP2350Moonboard
newtontriumphant
22.3 × 52.2 mm37 parts2LNo license1
RP2040/RP2350No shorts
pashutk
21 × 51 mm37 parts2LNo license1
RP2040/RP2350Devboard
kaileh57
21 × 51 mm37 parts2LMIT1
RP2040/RP2350Krackboard
kusuta012
21 × 51 mm37 parts2LMIT1
ESP32ESP32-Mini-Dev-Board
divyansh404-sudo
67 × 58 mm36 parts2LMIT1
RP2040/RP2350Blu board
fajr-lilypad
21 × 51 mm36 parts2LNo license1
Shield-A V2.0
68.8 × 53.6 mm36 parts2LCustom license1
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