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.
AVR/ArduinoMyIOShield
mwwhited
128.5 × 97.1 mm24 parts2LMIT1
AVR/ArduinoAtmega16m1-breakout
formicidae-tracker
46 × 33 mm22 parts2LNo license1
Led bar
chipfoundry
23.9 × 29.4 mm12 parts2LNo license1
PXIe5171 PFI breakout
ograsdijk
128.5 × 137.9 mm10 parts2LNo license1
Usbc breakout passthrough
mothenjoyer69
23.1 × 20.3 mm9 parts2LMIT1
Honyone RGB Shield
sullyjason
41.9 × 39.4 mm6 parts2LNo license1
5mm WS2812B breakout
machadoleonardo94
16 × 10 mm3 parts2LNo license1
ConnectBox HAT 8
ConnectBox
53.7 × 87 mm60 parts4LNo license0
Raspberry PiMosaicCore HAT (1)
MAHESH-THILAK-K
65 × 56.5 mm37 parts4LApache-2.00
Afe ep shield
mtguerreiro
65 × 60.1 mm36 parts2LBSD-3-Clause0
Nordic nRFBreakOutBoard
cpeniche
30 × 26.8 mm28 parts4LNo license0
ESP32ORA Arduino ESP CAN Shield Rev 1.2
gtrupiano
68.6 × 53.3 mm17 parts2LNo license0
ESP32Shield ESP32
cristobalcuevas
100 × 70 mm15 parts2LNo license0
Raspberry Pi433MHz Ground Station Board
pete4radio
95.5 × 56 mm14 parts4LNo license0
ProgramCounter
Robert-Riordan-UCD
58.6 × 38 mm13 parts2LCERN-OHL-P-2.00
Led bar
Rimal12345
23.9 × 29.4 mm12 parts2LNo license0
Retro stack debug arduino mega shield
gcoonrod
90.2 × 53.3 mm9 parts2LApache-2.00
ESP32ESP32-D1Mini-HUB75
DaveRichmond
62 × 63.8 mm5 parts2LCustom license0
L0 distance VL53L0x
Luos-io
20.3 × 15.2 mm8 parts2LMIT547
ESP32ESP32-PoE Rev E
OLIMEX
28 × 75 mm117 parts2LApache-2.0407
Proto amp bodge board
PantsForBirds
13 × 13 mm6 parts2LGPL-3.0322
ESP32ESP-EVB
75.2 × 74.7 mm143 parts2LApache-2.0285
48-pin breakout
speeduino
20.6 × 81 mm4 parts2LNo license281
RP2040/RP2350Blep hackerboard
CRImier
60.6 × 24.1 mm54 parts2LGPL-3.0253
As1115 display breakout
blakesmith
44.5 × 21.6 mm7 parts2LNo license167
Slave Design Power v1
embeddedalpha
80 × 50 mm47 parts2LMIT75
TQFP48 to DIP48 Breakout Board
vul-os
61 × 17.8 mm5 parts2LApache-2.055
Carvel Breakout board as M.2 Card
efabless
22 × 22 mm11 parts4LNo license40
FPGA2019-07-07 18:08:38 fpga hat
Wren6991
65 × 56.5 mm87 parts4LApache-2.031
STM32F767ZI LCC PNET Router
RobertPHeller
105.6 × 73.3 mm41 parts2LCC-BY-4.024
Cirque trackpad breakout board
wj-zhe
36.1 × 40 mm8 parts2LNo license24
Spi led breakout
abzman
93.7 × 43.2 mm14 parts2LUnlicense19
NQSAP-PCB RAM and MAR
TomNisbet
102 × 96 mm40 parts2LMIT18
STM32T20-l431-som
azonenberg
10.1 × 12.2 mm54 parts4LBSD-3-Clause17
MiSTeryNano MIDI Shield
MiSTle-Dev
57 × 57 mm32 parts2LNo license17
7 Segment Display Module, 5 digits
MobiFlight
60 × 12 mm3 parts2LNo license16
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