2,233 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.
RP2040/RP2350Arctyx-Nano
Keyaan-07
51 × 21 mm63 parts4LMIT123
Pmw3610
siderakb
23.5 × 31.5 mm15 parts2LCERN-OHL-P-2.0120
Cherry MX Breakout Board (Kailh Socket)
sszczep
18.3 × 25.9 mm3 parts2LMIT113
Raspberry PiTv070wxm hat
ScandentLLC
56.5 × 65 mm44 parts4LCC0-1.0108
Gb link cable
Palmr
17 × 15 mm2 parts2LCC-BY-4.0105
STM328Q
Spooky-Manufacturing
482.5 × 711 mm157 parts2LGPL-3.0101
Universal jlink adapter
Fescron
48.3 × 30.5 mm18 parts2LCERN-OHL-1.299
Spark synth hardware
povle
261 × 18 mm17 parts2LCC-BY-NC-4.099
ESP32Whofi
jedarden-org
78.5 × 20.1 mm45 parts2LMIT98
RP2040/RP2350ESP32-Devkit-Type-C
TobleMiner
25.3 × 48.2 mm54 parts2LMIT90
RPi Zero pHat Template
mikelawrence
65 × 30.5 mm2 parts2LMIT90
DSITx
daveshah1
100 × 90 mm148 parts4LMIT89
Raspberry Pi 5 PCIe Breakout
m1geo
50 × 50 mm45 parts4LMIT87
FPGAAzukar-FPGA
maxisimonazzi
100 × 75 mm140 parts2LCERN-OHL-P-2.086
FPGAFirst fpga
mattvenn
100 × 68 mm60 parts2LNo license83- schematic only · 101 parts
Kria k26-devboard
antmicro
101 partsApache-2.083 
STM32Keycard shell
keycard-tech
95 × 130 mm134 parts4LMIT82
FPGAPergola
pergola-fpga
85 × 54 mm136 parts4LMIT81
ESP32Sra dev board 2026
SRA-VJTI
90.2 × 90 mm145 parts2LMIT80
Elec RPI Robot HAT
pollen-robotics
65 × 30.9 mm122 parts4LApache-2.080
ESP32-S2-DevBoardTFT
ccadic
41.9 × 88.9 mm24 parts2LNo license79
FPGATinyFPGA-EX
tinyfpga
17.8 × 61 mm75 parts6LCERN-OHL-1.278
STM32Panel
embeddedalpha
99.7 × 108 mm94 partsMIT75
STM32ESC-Development-Board
10x-Aero
66 × 61.8 mm82 parts4LNo license75
RP2040/RP2350Build a devboard
KaiPereira
21 × 51 mm33 parts2LNo license71
ProtoConn
Pakequis
200.7 × 185.4 mm151 parts2LCC-BY-SA-4.070
Ultra DB X51 v1
ExploreEmbedded
178 × 145 mm132 partsBSD-3-Clause70
AVR/ArduinoMPCNC-Nano-Estlcam-Shield
tnn85
160 × 100 mm92 parts2LCustom license70
Makerspace auth
google
65.5 × 57.8 mm38 partsApache-2.069
ESP32OpenDTU-BreakoutBoard
dokuhn
50 × 50 mm9 parts2LCC-BY-NC-4.066
Chipkit Shield Max32
imciner2
101.6 × 53.3 mm10 parts2LCC-BY-SA-4.065
Raspberry PiMosaicHAT
septentrio-gnss
65 × 56.5 mm37 parts4LNo license63
Raspberry PiPicoBerry
mfolejewski
70 × 20 mm35 parts2LCustom license63
Microchip SAMTiny LoRa Module v1 (TLM01)
azerimaker
14 × 16.5 mm54 partsCERN-OHL-S-2.061
ESP32ESP32-P4-DevKit Rev D
OLIMEX
30 × 72 mm154 parts4LGPL-3.059
NXPPotentiostat
iorodeo
144.8 × 88.9 mm141 parts2LCC-BY-4.057
Browse boards by part
AMS1117-3.3 1034USBLC6-2SC6 836RP2040 609W25Q128JVS 388TL072 309AP2112K-3.3 308TL074 274ESP32-S3-WROOM-1 266CH340C 242L7805 224Pico 21874HC595 213USBLC6-2P6 200LM358 19074LS04 175AP2112K-3.3TRG1 173ESP32-WROOM-32 167SRV05-4 165Arduino_Nano_v3.x 15974LS245 156LM7805_TO220 15574LS138 152W25Q128JVSIQ 15174LS32 148