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.
Breakout adc
pbozeman
100 × 62 mm109 parts4LMIT5
ESP32ImogenWren
low-poly-studio
85.1 × 53.3 mm83 parts4LNo license5
Oresat mcxn947
oresat
73.1 × 69.8 mm61 parts4LNo license5
Ft2232h ice40
jkiv
34 × 22.4 mm35 parts4LCC-BY-NC-4.05
Electronic Hardware Design "Module"
joshajohnson
100 × 100 mm26 parts2LGPL-3.05
USB Daughterboard
Croktopus
28 × 25.5 mm6 parts2LGPL-3.05
AR PDM INA233 breakout
align-racing-uia
21.6 × 13.7 mm3 parts2LNo license5
Amphenol magjack
atctwo
25.7 × 22.1 mm3 parts2LNo license5
RP2040/RP2350RF HAT
Just4Stan
32 × 65 mm105 parts6LNo license4
Unoq power shield
ramalamadingdong
53.3 × 68.6 mm49 parts4LGPL-3.04
AVR/ArduinoLoraWAN Header Backwards
lostangles
111.9 × 34.6 mm29 parts2LNo license4
NXP3phase stepper driver
Squantor
56.6 × 57.6 mm29 parts2LMIT4
Pi HAT V4
danielwilczak101
71.7 × 71.3 mm24 parts2LNo license4
DotBot-LH2-Shield
DotBots
29 × 27 mm23 parts4LBSD-3-Clause4
LDC1314-Breakout
dfieschko
22.6 × 18.3 mm13 parts2LGPL-3.04
Bc250 carrier e
peterdk31
76.8 × 34.5 mm13 parts2LNo license4
AVR/ArduinoTs14-arduino shield
tropicsquare
58 × 53 mm13 parts2LCERN-OHL-P-2.04
USB HAT
marchmare
30 × 65 mm11 parts2LApache-2.04
Whitterm breakout
tuna-f1sh
37 × 30 mm7 parts2LGPL-3.04
PiCoCo-Breakout
cognitivegears
52.8 × 99 mm7 parts2LCC-BY-SA-4.04
RP2040/RP2350Cross point exp brd mini red2-sjmp
damercer
127 × 100.3 mm116 parts2LCC-BY-SA-4.03
AVR/ArduinoUno hat dev (1) (2)
Charmander542
155 × 58.1 mm99 parts2LNo license3
Cyton hat
BostonUniversitySeniorDesign
61.4 × 61.3 mm60 parts4LNo license3
ICE40-DAC
OLIMEX
30 × 50 mm39 parts2LApache-2.03
I2C multiplexer TCA9548A
SolderedElectronics
54 × 38 mm35 parts2LTAPR-OHL-1.03
Hm0360 breakout
NUBIVlab
30 × 20 mm28 parts4LMIT3
NanoProgrammer
LithosphereRocketry
29.5 × 14.2 mm23 parts2LGPL-3.03
Project
fadushin
34.6 × 30.4 mm13 parts2LNo license3
Ch55xG
SdtElectronics
16.3 × 25.3 mm11 parts2LNo license3
Lv3273 shield
erikvanzijst
16.1 × 16.6 mm4 parts2LMIT3
Raspberry PiBrain drain
dmz006
150 × 122 mm163 parts6LCustom license2
ESP32X de link
Monacrylic
64.5 × 120.5 mm114 parts2LNo license2
ESP32Robodev Signals
alexbnz-1
103 × 80.5 mm96 parts4LMIT2
Optical daq digitizer v0 4 1
miniscope
60 × 70 mm83 parts4LCERN-OHL-S-2.02
Riscduino Debug
dineshannayya
70.6 × 53.7 mm81 parts2LApache-2.02
ESP8266Fragaria extend
Zhang-JK
40 × 75 mm80 parts2LNo license2
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