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/ArduinoZ80Atmega128
46nori
170 × 130 mm105 parts4LGPL-3.09
AVR/ArduinoAlpha dre
AntoineAndre
243.7 × 81.8 mm105 parts2LGPL-3.09
AVR/ArduinoTX5823
ep092
54.5 × 47.6 mm94 parts2LNo license9
AVR/ArduinoPcb-RCD-SCM-clocker
4ms
39.6 × 110.9 mm84 partsNo license9
AVR/ArduinoPiBook
Wren6991
85 × 85 mm83 parts2LBSD-3-Clause9
AVR/ArduinoEliza
str-dst
259 × 88.3 mm79 parts2LNo license9
AVR/ArduinoNano Lambda
ruzki
22.2 × 47 mm70 parts2LNo license9
AVR/ArduinoRHS 3
pa-pa
51 × 61 mm66 parts2LNo license9
AVR/ArduinoSii9022a Breakout
gregdavill
45 × 35 mm65 parts4LNo license9
AVR/ArduinoNixie control board
shengwen-tw
183.8 × 59.4 mm61 parts2LMIT9
AVR/ArduinoPWM-Solar-Charge-Controller
Duckle29
58.4 × 66.7 mm51 parts2LMIT9
AVR/ArduinoFranzBoy
Franzininho
50 × 100 mm43 parts2LNo license9
AVR/ArduinoOCXO Clock
Gavin-Watkins
165.1 × 114.3 mm43 parts2LNo license9
AVR/ArduinoPentagon 128 Interface Board
proboterror
150 × 60 mm42 parts2LNo license9
AVR/ArduinoDRAM-Tester x1x4-lcd
goriponsoft
100 × 100 mm42 parts2LGPL-3.09
AVR/ArduinoPontag
hkzlab
38.1 × 85.1 mm35 parts2LGPL-3.09
AVR/ArduinoPhone test jig
kcxt
75 × 60.6 mm32 parts4LGPL-3.09
AVR/ArduinoKibot variants arduprog
INTI-CMNB
63 × 35.6 mm31 parts4LMIT9
AVR/ArduinoAtmega328p standalone board
BenRoe
47 × 88 mm29 parts2LNo license9
AVR/ArduinoArduino pro mini KiCad5
sagarHackeD
33.7 × 20.3 mm18 parts2LGPL-3.09
AVR/ArduinoArduino Battery Powered clone with extended EEPROM and clock
Ikarthikmb
42.2 × 30.5 mm17 parts2LNo license9
AVR/ArduinoPulseOximeter
Choaib-ELMADI
82 × 55 mm10 parts4LNo license9
AVR/ArduinoProject-Okapi
NorthernWidget
64.8 × 135 mm251 parts2LCC-BY-SA-4.08
AVR/ArduinoOpenHardwareExG Shield
OpenElectronicsLab
125.1 × 59.7 mm195 parts4LCERN-OHL-1.28
AVR/ArduinoHhkb
jinhwanlazy
101.9 × 285.8 mm136 parts2LNo license8
AVR/ArduinoMainboard
jypma
39.4 × 108 mm122 parts2LNo license8
AVR/ArduinoSDR Reciever
greenjacketgirl
94.9 × 72.8 mm120 parts2LNo license8
AVR/ArduinoPegasus
melonbred
242.9 × 76.2 mm109 parts2LMIT8
AVR/ArduinoVertex
247 × 78.9 mm99 parts2LNo license8
AVR/ArduinoDE10Jamma
MisterJamma
114.6 × 83.4 mm98 parts2LNo license8
AVR/ArduinoQfwfq
ASH-ART
219.1 × 95.3 mm89 parts2LGPL-3.08
AVR/ArduinoBzzt Keyboard Controller Board
SteveCooling
166 × 70 mm71 parts2LMIT8
AVR/ArduinoGelatino board
bru4bas
69 × 53.8 mm69 parts2LGPL-2.08
AVR/ArduinoGeoFence
sparkfunX
30.5 × 66 mm60 partsNo license8
AVR/ArduinoLogicModule
JanBurp
29.2 × 110.1 mm59 parts2LNo license8
AVR/ArduinoUSBcablecracker
szdiy
100 × 50 mm56 parts2LCC-BY-SA-4.08
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