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.
STM32CH32V203-DevBoard
21km43
20.3 × 50.8 mm35 parts2LMIT1
Rgb matrix
1-max-1
81.3 × 76.2 mm35 parts2LNo license1
STM32ZenCore
Keyaan-07
51 × 21 mm34 parts2LMIT1
RP2040/RP2350SaxboardTM
tenorangesax
21 × 51 mm34 parts2LNo license1
RP2040/RP2350Siberian-01
luispa12
26 × 56.9 mm34 parts2LNo license1
STM32Stm32f4-dev board
alcad1us
47.6 × 37.8 mm34 parts2LNo license1
Microchip SAMAtsamd20-breakout
elevendroids
24 × 50 mm33 parts2LCC-BY-SA-4.01
ESP32Esp32s3-usb imu board
kanishqtanwar35-hub
65 × 45 mm33 parts2LNo license1
AVR/ArduinoSyzygy breakout flash-1V8XL
adamcritchley
105.6 × 76 mm33 parts4LMIT1
AVR/ArduinoHeater shield
diegodierick
68.6 × 53.3 mm33 parts2LNo license1
RP2040/RP2350Devboard
NZ-2011
21.3 × 51.2 mm33 parts2LNo license1
RP2040/RP2350ASTRADEV
anbu2203
21.1 × 51.4 mm33 parts2LNo license1
AVR/ArduinoDevelopment boards
Coolbots7
21 × 50 mm33 parts2LNo license1
RP2040/RP2350BXB Devboard
Az154za
21 × 51 mm33 parts2LNo license1
RP2040/RP2350RP2354-Micro-Devboard
0x62b
19.5 × 22.6 mm32 parts2LNo license1
STM32STM32F103 dev board
christophmeyer
50 × 57 mm32 parts4LMIT1
RP2040/RP2350RP2040-Breakout-Board
EPSILON0-dev
15.2 × 30.5 mm32 parts4LMIT1
Minew-MS88SF2-breakout
atoomnetmarc
80.7 × 51.5 mm32 parts2LApache-2.01
RP2040/RP2350RPForged
sudo-apt-install-tap
21 × 51.2 mm32 parts2LNo license1
Calcifer
lowdrant
65 × 56 mm32 parts2LGPL-3.01
Protoboard
sporniket
99.8 × 110 mm32 parts2LNo license1
ESP32ESP32-S3-VGA-ADAPTOR
cfrankb
100 × 50 mm31 parts2LNo license1
AVR/ArduinoGNSS GPS L86-M33 breakout with easyC
SolderedElectronics
54 × 38 mm31 parts2LTAPR-OHL-1.01
Accelerometer gyroscope magnetometer LSM9DS1TR
22 × 38 mm30 parts2LTAPR-OHL-1.01
FSC-BT1038B-Barebones-Breakout
fsanzeni
59.9 × 45.2 mm29 parts4LNo license1
WCH CH32/CH55xPcb ch552 devboard
50 × 50 mm29 parts2LNo license1
Carrier PCB v2
EmmardFr
102.7 × 40 mm29 parts2LMIT1
ESP32Esp32-wroom-32-usb development board
Habib-creater
51.8 × 31 mm29 parts2LCERN-OHL-S-2.01
Dual motor-H-bridge-DRV8424P-driver breakout hardware design
38 × 38 mm29 parts2LTAPR-OHL-1.01
RP2040/RP2350Wuard core v1
wuard
17.8 × 19.9 mm28 parts2LCERN-OHL-S-2.01
Nanosaur-NX-shield
rnanosaur
71.5 × 16.4 mm28 parts2LCC-BY-NC-4.01
STM32STM32F103-DevBoard
soghayarmahmoud
56.6 × 35.8 mm28 parts2LCERN-OHL-S-2.01
Glr pcb display can shield
green-lion-racing
60.4 × 98.7 mm28 parts2LGPL-3.01
Microchip SAMSAMD21E18 LilyPad Sticker: NASA
Hugoyhu
0 × 0 mm28 parts2LMIT1
Pi1551-HAT
ytmytm
65 × 56.5 mm28 parts2LNo license1
286 to bboard
hfvermeer
33.5 × 78.7 mm28 parts2LGPL-3.01
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