2,409 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.
Kicad oil level sensor
CrtomirJuren
160 × 100 mm37 parts2LNo license0
Bandpass amplifier shield
SAakbarnezhad
68.6 × 53.3 mm37 parts4LCC-BY-SA-4.00
Odc cc2500
matthewgpetrin
34.4 × 26.4 mm36 parts4LNo license0
KiberovDev
ahammed-shaz
32 × 29 mm36 parts2LNo license0
PICPlaca dezvolatre pic
Adrian-71
62.1 × 72.1 mm36 parts2LMIT0
STM32Steering
AQUA-Warrior
67 × 33 mm36 parts2LNo license0
RP2040/RP2350MyDevboard
Dee-24r
21.5 × 52.2 mm36 parts2LNo license0
STM32STM32G431-Dev-Board
larshasstdas
31.3 × 60.5 mm36 parts2LMIT0
RP2040/RP2350MountPico
AaradhyaBarnwal
26.6 × 51 mm36 parts2LNo license0
RP2040/RP2350Rp2040-custom devboard
Coderbeeko
21 × 51 mm36 parts2LMIT0
RP2040/RP2350Devboard
Coder1203
21 × 51 mm35 parts2LNo license0
RP2040/RP2350HALO-0
Cocotrilito
21 × 51 mm35 parts2LMIT0
RP2040/RP2350Devboard-Rp2040-
Magnu-Shaak
21 × 51 mm35 parts2LMIT0
ESP32Esp32-s3-testboard
ktauchathuranga
50 × 50 mm35 parts4LNo license0
Kicad pcb ioexpander
fanningert
18.3 × 25.9 mm35 parts4LNo license0
Toastershield
Camuise
68.6 × 53.3 mm35 parts2LNo license0
Kicad board-2026-07-16-bluepill io carrier
SimulatedFlow
100 × 80 mm35 parts4LCustom license0
RP2040/RP2350Devboard
emilyahmad
21 × 51 mm35 parts2LNo license0
RP2040/RP2350Kashboard
kashsuks
21 × 51.1 mm35 parts2LMIT0
Ethernet module
sneakylizard123-4
50 × 21.4 mm35 parts4LNo license0
RP2040/RP2350Rp2040-usbc dev board
mattkanwisher
21 × 51 mm35 parts2LNo license0
VeryTinyPi
HynixCJR
14.4 × 14.2 mm35 parts6LGPL-3.00
ESP32Pn5180 carrier
hyiger
62.5 × 106.5 mm35 parts2LNo license0
STM32STM32F401RE-Dev-Board-Design
colonelblacc
100 × 100 mm35 parts2LNo license0
RP2040/RP2350Devboard
AYUSH-pro-grammer
21 × 51 mm34 parts2LNo license0
ESP32ESP32-DevKit-Custom
chackojose2005-zodiac
30.4 × 56.5 mm34 parts4LMIT0
RP2040/RP2350RP2040 DevBoard
luispa12
26 × 56.9 mm34 parts2LNo license0
RP2040/RP2350Cybdokey
Cybdo
12 × 46 mm34 parts2LNo license0
STM32CoreTrace-CT-F401RE
navaneeth-linh
100 × 100 mm33 parts2LNo license0
STM32STM32 JNBG
Ahmed0Sherif
52.5 × 51.5 mm33 parts2LMIT0
ESP32ESP32Sx01
mlab-modules
60.5 × 50.3 mm33 parts2LNo license0
RP2040/RP2350BoohRP2040
anshulsamudayanan
21 × 51.1 mm33 parts2LNo license0
RP2040/RP2350DevBoard
denisgrigoriev
21 × 51 mm33 parts2LNo license0
RP2040/RP2350BOB RP2040-DevBoard
AmazingWings
23.1 × 56.1 mm33 parts2LMIT0
RP2040/RP2350HackroDevX
SunritHazra
21 × 51.5 mm33 parts2LMIT0
J939-transceiver
karimf1
100 × 50 mm33 parts2LMIT0
Browse boards by part
AMS1117-3.3 1176USBLC6-2SC6 971RP2040 698W25Q128JVS 419AP2112K-3.3 372TL072 338TL074 307ESP32-S3-WROOM-1 300CH340C 273L7805 264Pico 25074HC595 248USBLC6-2P6 235LM358 223AP2112K-3.3TRG1 202Arduino_Nano_v3.x 19474LS04 193LM7805_TO220 182ESP32-WROOM-32 18174LS245 171SRV05-4 169W25Q128JVSIQ 16974LS138 16274LS32 161