3,813 open source AVR/Arduino boards
ATmega and ATtiny microcontrollers, Arduino-compatible boards and Arduino shields. 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/ArduinoArduino UNO programmer
INTI-CMNB
63 × 35.6 mm31 parts4LNo license0
AVR/ArduinoKiCad-Claude assisted
artemmelnyk-extern
66 × 53.3 mm31 parts2LMIT0
AVR/ArduinoPTLino
PostTenebrasLab
61 × 51.3 mm31 parts2LNo license0
AVR/ArduinoAsmTest
honzakutil
137.1 × 81.1 mm31 parts2LNo license0
AVR/ArduinoAbcdefg.kicad pcb saigooner
ktoniman
48.3 × 95.3 mm31 parts4LNo license0
AVR/ArduinoNanoReflowController
hecko
100 × 60 mm31 parts2LNo license0
AVR/ArduinoACM Y2020V0.1
align-racing-uia
18 × 22.5 mm30 parts2LNo license0
AVR/ArduinoPigeon
Olin-Rocketry
30 × 40 mm30 parts2LNo license0
AVR/ArduinoA shift
lycronisxd
80 × 56 mm30 parts2LNo license0
AVR/ArduinoAtmega485V
Shaiv123
48.5 × 81.8 mm30 parts2LGPL-3.00
AVR/ArduinoAirBoxnano
danfei
44 × 21 mm30 parts2LCC-BY-SA-4.00
AVR/ArduinoVdo breakout
nagutierrez
47 × 48 mm30 parts4LCC-BY-NC-4.00
AVR/ArduinoAtmega32U4 GPS
LeaGuyon
40.5 × 35 mm30 parts2LNo license0
AVR/ArduinoLEC009002
LECTIX
69 × 32 mm30 parts2LCERN-OHL-S-2.00
AVR/ArduinoProjet gpsdo
MARWANE225
40.5 × 35 mm30 parts2LNo license0
AVR/ArduinoH9uno
c3h9dx
68.6 × 53.3 mm30 parts2LNo license0
AVR/ArduinoISA-26-TESTER-KIT-COMMUNITY
bottlecoder-raj
225.3 × 126.5 mm30 parts2LNo license0
AVR/ArduinoDekaLED
anachrocomputer
26 × 26 mm30 parts2LNo license0
AVR/ArduinoAtmega32U4 GPS
Pauloux
40.5 × 35 mm30 parts2LGPL-3.00
AVR/ArduinoMetro
maxotar
28 × 30 mm29 parts4LNo license0
AVR/ArduinoYukuyuku USBasp ProgrammerV1
zukki4123
30 × 20 mm29 parts2LNo license0
AVR/ArduinoPCB-ornament
Boogami
85 × 98 mm29 parts2LNo license0
AVR/ArduinoXmas 2018
king-jam
88.9 × 106.7 mm29 parts2LGPL-3.00
AVR/ArduinoSimon says ATtiny
ElectronPlant
62.5 × 43.7 mm29 parts2LCC-BY-SA-4.00
AVR/ArduinoATmega328PB-usb bread board
asukiaaa
60 × 60 mm29 parts2LNo license0
AVR/ArduinoDachboden badge
jadeaffenjaeger
90 × 90 mm29 parts2LNo license0
AVR/ArduinoESP8266ControllerCircuit
remyar
53.3 × 68.6 mm29 parts2LNo license0
AVR/ArduinoServo controller
rmingon
49 × 37 mm29 parts2LNo license0
AVR/ArduinoCygolite
smaroukis
56 × 16 mm29 parts2LNo license0
AVR/ArduinoPm sensor
ondras12345
49.5 × 59.7 mm29 parts2LMIT0
AVR/ArduinoSciencecamp 2019-datalogger
janisstreib
97 × 46 mm29 parts2LMIT0
AVR/ArduinoThermometer digital min max
K4LCIFER
100 × 75 mm29 parts2LGPL-3.00
AVR/ArduinoPhotogates
nathab32
92 × 67.8 mm29 parts2LNo license0
AVR/ArduinoPCB-Power-Blink
annaastrs-svg
52 × 44 mm29 parts2LNo license0
AVR/ArduinoCoglight badge-THT
hackerspace-ntnu
71 × 99.5 mm29 parts2LNo license0
AVR/ArduinoLaunchpad
martijncasteel
88.9 × 43.2 mm29 parts2LNo license0
Browse boards by part
AMS1117-3.3 1847USBLC6-2SC6 1502RP2040 1017W25Q128JVS 654AP2112K-3.3 635ESP32-S3-WROOM-1 488TL072 446L7805 43674HC595 404TL074 404CH340C 392LM358 367Pico 356USBLC6-2P6 351AP2112K-3.3TRG1 345Arduino_Nano_v3.x 317LM7805_TO220 315ProMicro 29774LS04 285ESP32-WROOM-32 285PC817 260SRV05-4 25874LS245 257TP4056 250