2,363 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.
ESP32Upet wifi
fachat
56.4 × 25.4 mm19 parts2LNo license1
ESP32The-Sax32TM
tenorangesax
27.9 × 51 mm19 parts2LNo license1
Esp breadboard expander
Atomicbeast101
88.3 × 50.9 mm18 parts4LMIT1
ESP32Esp32-dev board
rhammell
47.2 × 29 mm18 parts2LGPL-3.01
Rpi mipi dsi display
chrispyy87
60 × 80 mm17 parts4LNo license1
AVR/ArduinoMicrocontroller Open Source Hardware
JulienChvt
68.6 × 53.3 mm17 parts2LNo license1
Pcb alimentation prototypage
cegep-electronique-programmable
58.4 × 71.1 mm17 parts2LNo license1
Ttgo tbeam sensor shield
teaalltr
31.4 × 100.3 mm16 partsNo license1
RS-232-Transceiver breakout hardware design
SolderedElectronics
38 × 38 mm16 parts2LTAPR-OHL-1.01
MicroSD-breakout hardware design
22 × 38 mm16 parts2LTAPR-OHL-1.01
PowerCB
MartinWeigel
54 × 17.1 mm16 parts2LNo license1
Boardoza MS5611 Barometric Pressure Sensor Breakout Board
Boardoza
20 × 20 mm16 parts2LCC-BY-SA-4.01
AVR/ArduinoDebugWireProgrammerSchield
joustava
57.7 × 20.1 mm16 parts2LNo license1
AVR/ArduinoSlider potentiometer breakout qwiic hardware design
86 × 22 mm15 parts2LTAPR-OHL-1.01
AVR/ArduinoSlider potentiometer breakout with easyC-hardware design
86 × 22 mm15 parts2LTAPR-OHL-1.01
MonoDeck
IronMan1405
72.5 × 54.8 mm14 parts2LMIT1
Canfdshield
feaser
53.9 × 53.3 mm14 parts4LMIT1
Host usb pmod
sparkengineering
40 × 20 mm14 parts4LCERN-OHL-P-2.01
LSM6DS3TR-C-Breakout
HackableElectronics
16.5 × 20.3 mm14 parts2LGPL-3.01
LIN-Transceiver-NCV7329-SLAVE-breakout hardware design
22 × 38 mm14 parts2LTAPR-OHL-1.01
Raspberry PiRaspiCherryMXKeysHat
asukiaaa
56.6 × 65.5 mm13 parts2LNo license1
BMI270-Breakout
16.5 × 20.3 mm13 parts2LLGPL-2.11
Dakboard-HDMI-dimmer-HW
DotaPie
30 × 65 mm13 parts2LEUPL-1.21
Boardoza TH09C Temperature Humidity Sensor Breakout Board
20 × 20 mm13 parts2LCC-BY-SA-4.01
BeagleBoneLoRaAdapter
VioletEternity
33.1 × 61.2 mm13 parts4LCERN-OHL-P-2.01
Midibox
lmdsp
256 × 29 mm13 parts2LCC-BY-NC-4.01
Butane--LPG---Smoke sensor-MQ2-breakout hardware design
22 × 38 mm12 parts2LTAPR-OHL-1.01
Serial breadboard adapter
mh21
10.2 × 12.7 mm12 parts2LCC-BY-4.01
Ammonia sensor-MQ137-breakout hardware design
22 × 38 mm12 parts2LTAPR-OHL-1.01
AVR/ArduinoHall effect sensor easyC
22 × 22 mm12 parts2LTAPR-OHL-1.01
Pca9634-breakout
elevendroids
40 × 25 mm12 parts2LCC-BY-SA-4.01
AVR/ArduinoHall effect sensor easyC
22 × 22 mm12 parts2LTAPR-OHL-1.01
CO--flammable gasses sensor-MQ9-breakout hardware design
22 × 38 mm12 parts2LTAPR-OHL-1.01
WCH CH32/CH55xX35
cyao1234
15.2 × 27.9 mm12 parts2LNo license1
Memory game
siddhipatel911
82.6 × 62.2 mm11 parts2LMIT1
LS018B7DH02-breakout
rroels
48 × 24.3 mm10 parts2LMIT1
Browse boards by part
AMS1117-3.3 1069USBLC6-2SC6 866RP2040 632W25Q128JVS 394TL072 319AP2112K-3.3 313TL074 281ESP32-S3-WROOM-1 268CH340C 249L7805 229Pico 22174HC595 218USBLC6-2P6 206LM358 20074LS04 180AP2112K-3.3TRG1 179ESP32-WROOM-32 169LM7805_TO220 167SRV05-4 165Arduino_Nano_v3.x 16474LS245 160W25Q128JVSIQ 15774LS138 15574LS32 152