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/ArduinoLFR ATMega4808 V2
peterladur
70 × 90 mm64 parts2LNo license0
AVR/ArduinoNotemplate
au-ts
27.6 × 13.8 mm64 parts2LNo license0
AVR/ArduinoPower
Olin-Rocketry
66.1 × 84.5 mm64 parts2LNo license0
AVR/ArduinoEntrenador
FrizzyElectronics
115 × 61 mm64 parts2LCustom license0
AVR/ArduinoMillennium
kmatzen
81 × 114 mm64 parts4LMIT0
AVR/ArduinoNumpad
npwhl
76.2 × 118.8 mm63 parts2LNo license0
AVR/ArduinoInterface board 1
chipsi
107 × 54 mm63 parts2LCC-BY-SA-4.00
AVR/ArduinoInterface board 1
CHIBOY12
107 × 54 mm63 parts2LNo license0
AVR/ArduinoSSEverythingMainBoardv2
paulbuzzby
99.1 × 81.3 mm63 parts4LNo license0
AVR/ArduinoSit stand
moonfall
158.8 × 50.8 mm63 parts2LNo license0
AVR/ArduinoUsbjoystick d12 a4 r1 rev2.0
nealpalmer
43 × 58 mm63 parts2LGPL-3.00
AVR/ArduinoECE411-PracticumProject-G11
ECE411-Practicum-Group11
140 × 64.8 mm63 parts2LCC0-1.00
AVR/ArduinoStepper motor controller
abdallah-yasser
60 × 47 mm63 parts4LMIT0
AVR/ArduinoHeater controller rev a
manhoosbilli1
47.2 × 45.8 mm62 parts2LNo license0
AVR/ArduinoLuciebox v5
hyperlode
78 × 90.5 mm62 parts2LNo license0
AVR/Arduino65C02 Computer
rprouse
203.2 × 149.9 mm62 parts2LMIT0
AVR/ArduinoMultimeter
MadsRudolph
688 × 275.9 mm62 parts2LNo license0
AVR/ArduinoSlice IAQM
feastorg
70 × 100 mm62 parts2LGPL-3.00
AVR/ArduinoMinilysreklameKontroller
Lysreklamen
100 × 50 mm62 parts2LNo license0
AVR/ArduinoPlaca 2.0
LEOSProyecdodegardo
68 × 62 mm61 parts4LNo license0
AVR/ArduinoSLLed
iamjackchen
100 × 100 mm61 parts2LNo license0
AVR/ArduinoPev uvw sw
mit-pev
139.7 × 76.2 mm61 parts4LNo license0
AVR/ArduinoStrandjungs ReactionGame
JochiSt
48.6 × 80.4 mm61 parts2LGPL-3.00
AVR/ArduinoPitotBoard2026
KUBTSSAvionics
59.7 × 40.2 mm61 parts2LNo license0
AVR/ArduinoCoolgirl nes multicart
viuhimciuc
100 × 59 mm61 parts2LNo license0
AVR/ArduinoByteworker
Bytewerk
34 × 34 mm61 partsCC-BY-SA-4.00
AVR/ArduinoAutomated road marker
bytecod3
114.2 × 189.8 mm61 parts2LMIT0
AVR/ArduinoUvw switch
MIH-pi
139.7 × 76.2 mm61 parts4LMIT0
AVR/ArduinoArduino-Uno-R3-PCB-Design
daviddzekwer
68.6 × 53.3 mm60 parts2LNo license0
AVR/ArduinoEngine monitor
alexanderenrique
50.8 × 38.1 mm60 parts2LNo license0
AVR/ArduinoGain box psu
carmisergio
175 × 85 mm60 parts2LNo license0
AVR/ArduinoRilis1
mekatronik-achmadi
115.1 × 61 mm60 parts2LNo license0
AVR/ArduinoNeptuneESC
15jgme
50 × 29 mm60 parts2LLGPL-3.00
AVR/Arduino25pix
bnaucler
60 × 96 mm60 parts2LMIT0
AVR/ArduinoSoldering Fume Extractor
lizard-electronics
140 × 30 mm59 parts2LNo license0
AVR/ArduinoPcb
DMProAccelerator
119.9 × 69 mm59 parts4LNo 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