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.
Servo Voltage Stepdown
innate-inc
19.7 × 28.4 mm10 parts2LCERN-OHL-S-2.01
DAQ-GPS Breakout-V1.0
IlyaasAitSimmou
42 × 70 mm7 parts4LNo license1
Icarus drive shield
nnarain
34.8 × 34.8 mm5 parts4LNo license1
Tps709-breadboard adapter
mh21
7 × 8.6 mm4 parts2LCC-BY-4.01
XC6206 Breakout
ZDBioHazard
8.1 × 6.6 mm4 parts2LNo license1
ESP32 HUZZAH BREAKOUT
jonasbjurel
50.8 × 22.9 mm4 parts2LCustom license1
Breakout PA1010D
Finomnis
20.3 × 12.7 mm3 parts2LMIT1
10 Conductor Ribbon Cable Breakout Board
BrentSeidel
36.8 × 24.1 mm3 parts2LGPL-3.01
Forge launcher
ericpearson1313
109 × 115 mm218 parts6LNo license0
Multi channel cremat amplifier
Brunner-neutrino-lab
225 × 235 mm216 parts4LNo license0
ESP32EEG-CAR-01 carrier board -- Rev C, UNROUTED
stepvda
150 × 130 mm186 parts4LNo license0
Core evb - Copy
itead
140 × 90 mm181 parts2LNo license0
FPGANovaFPGA Dev Board
MAHESH-THILAK-K
89 × 72 mm165 parts4LApache-2.00
AVR/ArduinoHAT CM4 DRC 1
ConnectBox
105.6 × 86.1 mm147 parts6LNo license0
STM32Pi3 hat
Jayanth-M0625
56.5 × 65 mm135 parts4LNo license0
PICBBB SHIELD V2
vic-simkus
89.3 × 102.1 mm117 parts4LCERN-OHL-1.20
ESP32Dev board r2
family-mruby
90 × 70 mm109 parts4LCERN-OHL-S-2.00
FPGAICEBreaker bitsy
frohro
38.1 × 17.8 mm98 parts4LNo license0
MiniKeyboard
DaveRichmond
135.9 × 106.7 mm96 parts2LCustom license0
Cpy Freq Reference
molendijk
85 × 115 mm91 parts2LNo license0
Caravel Nucleo
Rimal12345
68.1 × 92.5 mm89 parts2LNo license0
AVR/ArduinoShield
apmarshall3
83.2 × 69.2 mm82 parts2LNo license0
Pantilt controller
AMOVFC
52.3 × 93.2 mm81 parts4LNo license0
Isolated Multi-Rail Power Supply Monitor Arduino Shield Board
capotosto
106 × 80 mm74 parts4LNo license0
STM32Matrix + Multiplex
livid05
3.6 × 3.3 mm73 parts2LNo license0
Extended shield v4 4
maurer-lbb
151.5 × 120 mm72 parts2LCC-BY-SA-4.00
AVR/ArduinoDigiPot Evaluation Board
mar0x
114.3 × 163.2 mm71 parts2LNo license0
AVR/ArduinoLab 8 Breadboard
MVaugn
167.6 × 114.3 mm67 parts2LNo license0
AVR/Arduino6502 DebugBoard
DomAtTheShack
199.6 × 114.2 mm64 parts2LNo license0
Comm Board
cristobalcuevas
100 × 100 mm64 parts4LNo license0
Caravel pcb v3 FTDI flexy
pohantw
76.2 × 73.8 mm63 parts2LNo license0
Microchip SAMSAMD21 Dev Board
4project-co-il
55.4 × 87.4 mm60 parts2LMIT0
Shield Arduino
Mateuszworo97
69.6 × 53.3 mm44 parts2LNo license0
STM32Flying byte v1
PanBabinicz
52 × 25 mm43 parts4LNo license0
ESP322ESP Breakout
617quan
134.6 × 124.5 mm39 parts2LNo license0
WCH CH32/CH55xHomeBus Gateway Node Development Board
koko69420
130 × 60 mm38 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