2,573 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.
Demod breakout
loxodes
30.8 × 50.5 mm67 parts4LNo license206
Mags
ElectronicCats
66 × 73.1 mm10 parts2LNo license130
Display hat
FOSDEM
31 × 65 mm9 parts2LNo license114
Backup
embeddedalpha
34.8 × 30 mm54 parts2LMIT75
TQFP44 to DIP44 Breakout Board
vul-os
55.9 × 20.3 mm6 parts2LApache-2.055
Caravel 3.3V Development Board
efabless
76.2 × 73.8 mm68 parts2LNo license40
Hat template
bitfieldlabs
64.4 × 81 mm4 parts2LNo license32
FPGA2019-07-07 17:33:20 fpga hat
Wren6991
65 × 56.5 mm87 parts4LApache-2.031
Breadboard supply adapter
rabidaudio
24.6 × 45.7 mm8 parts2LMIT31
ADC-15-4 Dev Board
joshajohnson
48 × 48 mm9 parts4LGPL-3.025
PocketBeaglePWMHalfSiding+ABSSlave
RobertPHeller
149.9 × 128.3 mm75 parts2LCC-BY-4.024
Nuclone devboard medium 2 layer USB-C PD
Squantor
50 × 76.2 mm34 parts2LMIT24
AVR/ArduinoNQSAP Loader / Debugger and Clock
TomNisbet
102 × 96 mm42 parts2LMIT18
Tigard la breakout
Matir
32.2 × 28.2 mm3 parts2LBSD-2-Clause18
Ltc3374-test
azonenberg
74 × 58 mm71 parts4LBSD-3-Clause17
Teensy4 Shield
Aightech
19 × 36.5 mm3 parts4LGPL-3.017
Dimmer board
MobiFlight
38.7 × 50.8 mm12 parts2LNo license16
LCD 64x32 Breakout
bitbank2
24 × 15 mm3 parts2LApache-2.016
16PinSocketAPC
michaelshiloh
53.6 × 40.4 mm3 parts2LAGPL-3.014
XPT2046
SdtElectronics
20.5 × 14.7 mm8 parts2LCERN-OHL-W-2.013
Nanopi neo air
immortalserg
49.8 × 47 mm4 parts2LNo license12
WCH CH32/CH55xCh32x035-promicro usb pd
74th
17.8 × 31.8 mm17 parts2LMIT10
WigBase
Architeuthis-Flux
78.8 × 69 mm17 parts2LMIT10
ESP32ESP32-WROOM-32
25.4 × 34.3 mm21 parts2LMIT8
BRK-TSSOP-20-4.4x6.5-P0.65
Gekkio
18.9 × 37.8 mm3 parts2LCC-BY-4.06
BreakOutBoard
crempp
156.2 × 45.6 mm12 parts2LNo license4
Breakout EEPROM SOIC tiled
55.4 × 45.2 mm11 parts2LMIT4
Pi HAT V5 Simple
danielwilczak101
78.1 × 71.3 mm8 parts2LNo license4
Digitabulum Test Harness
Manuvr
24.8 × 33.1 mm4 parts4LNo license4
Breakout Board for Commodore Serial Port
BrettHallen
56.4 × 23.8 mm3 parts2LNo license4
AVR/ArduinoLCD LOCONET SHIELD
bask185
80.5 × 80 mm38 parts2LNo license3
ESP32ESP32-Feather-6B6L-SMD
61 × 78.7 mm37 parts2LCC-BY-4.03
ACS72x-Breakout v11
humancomputerintegration
26 × 26 mm11 parts2LGPL-3.03
DMM Feather Specific
oihdesigns
68.5 × 53.3 mm57 parts4LNo license2
134pin 7-967288-1
rusefi
139.7 × 73.7 mm38 parts2LNo license2
134pin 7-967288-1
rusefillc
139.7 × 73.7 mm38 parts2LGPL-3.02
Browse boards by part
AMS1117-3.3 1287USBLC6-2SC6 1056RP2040 725W25Q128JVS 444AP2112K-3.3 408TL072 347ESP32-S3-WROOM-1 324TL074 308CH340C 290L7805 29074HC595 267USBLC6-2P6 260Pico 258LM358 237AP2112K-3.3TRG1 22474LS04 207ESP32-WROOM-32 203Arduino_Nano_v3.x 202LM7805_TO220 20174LS245 18474LS138 176SRV05-4 17674LS08 17574LS32 175