2,438 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.
MotionSense-IMU
igilarranz
35.4 × 27.5 mm12 parts2LNo license0
AVR/ArduinoD1R32InterfaceShield
mpek29
68.6 × 53.3 mm12 parts2LNo license0
AVR/ArduinoBumWatch
choicebuilds
44 × 44 mm12 parts4LNo license0
AVR/ArduinoATTiny88 Breakout Board
mail4johnv
22.9 × 48.5 mm12 parts2LMPL-2.00
ESP32Esp demo
1ln
57.5 × 31 mm12 parts2LNo license0
DhMonitor
Jodaille
58.4 × 69.9 mm11 parts2LGPL-3.00
AVR/ArduinoAudio shield
deniskokarev
52.1 × 54.6 mm11 parts2LNo license0
MAX3237-RS232-Full-Breakout-DCE
kd4cbm
31.8 × 51.4 mm11 parts2LCustom license0
Pressure transducer
benchittle
34 × 72 mm11 parts2LGPL-3.00
Rpi pico button shield
evdlabs
47.2 × 68.1 mm10 parts2LMIT0
Tja1051-breakout
11philip22
32.3 × 15.7 mm10 parts2LNo license0
Mimir breakout board
crashoveride720
45.7 × 73.7 mm10 parts2LNo license0
Wsen hids breakout
myles-parfeniuk
40 × 30 mm9 parts2LGPL-3.00
Tmp108
6mil-Labs
25.4 × 25.4 mm9 parts4LCERN-OHL-S-2.00
ESP32LoRa-Esp32 RaspbeeryPi0W Hat
joaouzeda
65.5 × 30.3 mm9 parts2LNo license0
Raspberry PiGpio-Hat-Pi
Sadrita404
38.7 × 17.8 mm9 parts2LMIT0
ESP32-C5 Dev Board
cyberknight20222022-cell
100 × 60 mm9 parts2LNo license0
AVR/ArduinoStandalone ATmega382
justfulofluck
33 × 58.4 mm9 parts2LNo license0
CFL EE FeatherDebugShield
connectedfuturelabs
33 × 61 mm9 parts2LMIT0
AVR/ArduinoSmart parking-System
ahmed-salama7
128.5 × 112 mm8 parts2LNo license0
Imuboard claude
godmar
20.3 × 10.2 mm8 parts2LNo license0
Raspberry PiRaspberry-PI-HAT
gathonjia-ndungu
28.2 × 18.8 mm8 parts2LNo license0
Fusb301-breakout
leo60228
17.8 × 25.4 mm7 parts2LNo license0
Tracffic-Lights
Ch3ema
19.5 × 30 mm7 parts2LNo license0
Raspberry PiLTI
KXR-UCF
65 × 56 mm6 parts2LNo license0
Carrier 4cell
DashiellRussell
111.5 × 88.6 mm6 parts2LNo license0
Se050-breakout
cvaldess
16.4 × 14.6 mm6 parts2LGPL-3.00
Micro sd spi breakout module
Harshavar8jdm
28 × 22 mm6 parts2LNo license0
Hdmi breakout
flaviut
35 × 29 mm6 parts4LNo license0
AVR/ArduinoDeskPet-A-well being assistant
Cherish-everything
91.5 × 59.5 mm6 parts2LNo license0
Sensirion sht35-breakout
aycaozkann
16.5 × 20 mm6 parts2LNo license0
Temp node
sslivins
35 × 21 mm6 parts2LNo license0
Kicad mcp
AbdulAzeez0001
50 × 30 mm5 parts2LNo license0
Glowducky
cybloxyz
28.5 × 28.5 mm5 parts2LNo license0
Bme280-i2c breakout
chaitya37
14.5 × 13.5 mm5 parts2LNo license0
Meshgw hat
d3athstr
65 × 56 mm5 parts2LNo license0
Browse boards by part
AMS1117-3.3 1196USBLC6-2SC6 983RP2040 699W25Q128JVS 421AP2112K-3.3 376TL072 339TL074 307ESP32-S3-WROOM-1 304CH340C 274L7805 271Pico 25174HC595 248USBLC6-2P6 248LM358 228AP2112K-3.3TRG1 205Arduino_Nano_v3.x 19774LS04 193LM7805_TO220 185ESP32-WROOM-32 18274LS245 171SRV05-4 169W25Q128JVSIQ 16974LS138 16274LS32 161