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/ArduinoDoorbot
makeitlabs
65 × 56.5 mm75 parts2LNo license2
AVR/ArduinoATV-Control
mikelawrence
48.3 × 35.6 mm74 parts2LMIT2
AVR/ArduinoDmf relay board
esyywar
100 × 96.1 mm74 parts4LNo license2
AVR/ArduinoMain PS Board
zachrjt
85 × 94.5 mm73 parts2LNo license2
AVR/ArduinoKassenautomat.mdb interface
fau-fablab
100 × 100 mm69 parts2LNo license2
AVR/ArduinoMDE22
ZeniteSolar
144 × 59.5 mm69 parts2LNo license2
AVR/ArduinoSimplemaker
acassis
120.4 × 140.2 mm68 parts2LGPL-2.02
AVR/Arduino260321
McbeEringi
48 × 73 mm66 parts2LMIT2
AVR/ArduinoFireKey Hardware
FrederikWolter
99.7 × 99.1 mm65 parts2LNo license2
AVR/ArduinoEtera uart bridge
Lenart12
100 × 100 mm63 parts2LNo license2
AVR/ArduinoLed controller
astoeckel
88.9 × 97.8 mm62 parts2LCERN-OHL-1.22
AVR/ArduinoElectronic load
ondras12345
48.3 × 50.8 mm60 parts2LMIT2
AVR/ArduinoAtmega32u2-blender keypad
soramimi
81.3 × 115.6 mm60 parts2LNo license2
AVR/ArduinoGioia r 02
Green-bms
30 × 30 mm59 parts2LNo license2
AVR/ArduinoZxkbd
jtsiomb
148.3 × 48 mm59 parts2LGPL-3.02
AVR/ArduinoSalp board
aeiou642
64.8 × 58.7 mm57 parts4LNo license2
AVR/ArduinoDasduino-CORE-hardware design
SolderedElectronics
63 × 25.9 mm57 parts2LTAPR-OHL-1.02
AVR/ArduinoRollerShutterControlPanel
Mickyleitor
110.6 × 50 mm55 parts2LCERN-OHL-1.22
AVR/ArduinoAls311-clock
ugolnikovE
100 × 70 mm55 parts2LMIT2
AVR/ArduinoStreamBuddy
harshitgoel96
76.4 × 104.6 mm55 parts2LGPL-3.02
AVR/ArduinoVypaluvach
Wladymyr1996
190 × 70 mm54 parts2LGPL-3.02
AVR/ArduinoSynchroniser
jimmerricks
19.2 × 106 mm54 parts2LNo license2
AVR/ArduinoRenewableRegulator MPPT PCB 2017
re-innovation
102 × 72 mm54 partsMIT2
AVR/ArduinoBivalveBit
millerlp
89.9 × 17.8 mm53 parts2LGPL-3.02
AVR/ArduinoPiano Key Driver
bmgxyz
118 × 58.3 mm53 parts2LNo license2
AVR/ArduinoSubSequence
marangisto
80.3 × 100 mm52 parts2LMIT2
AVR/ArduinoArdui89 Cinque Uno
Cyrillinux
89.7 × 53.5 mm52 parts2LNo license2
AVR/ArduinoMacropad
vlee6
58.5 × 80.9 mm52 parts2LNo license2
AVR/ArduinoFlipdot Controller
Qeteshpony
100 × 100 mm51 parts2LBSD-2-Clause2
AVR/ArduinoBasicsensormodule
121.3 × 52.1 mm50 parts2LGPL-3.02
AVR/ArduinoNespole
coddingtonbear
87.9 × 54.9 mm50 parts2LNo license2
AVR/ArduinoFLIGHT CONTROLLER REV 2
justraven
78.7 × 99.1 mm50 parts2LMIT2
AVR/ArduinoAwreflow3
kelogs
100 × 100 mm49 parts2LMIT2
AVR/ArduinoArduino-Compatible-Board
ercanersoy
68.6 × 53.3 mm48 partsCC-BY-SA-4.02
AVR/ArduinoMentor
F6ITU
50 × 100 mm48 parts2LNo license2
AVR/ArduinoFlashProgrammer
jdisanti
61 × 38.1 mm47 parts2LApache-2.02
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