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/ArduinoCurrentverification
wlatif-cmyk
41.7 × 49.9 mm6 parts2LNo license8
AVR/ArduinoProject3 4layer
AronAyub
57.1 × 33.9 mm17 parts4LNo license6
AVR/ArduinoSystemmodul25.2
stonedDiscord
61 × 116.8 mm28 parts2LBSD-2-Clause4
AVR/ArduinoKeyboard
Haxerflaxer
109.2 × 106.7 mm23 parts2LGPL-3.04
AVR/ArduinoMySensors FilPilote RFM69
LudovicLemarinel
47.5 × 49 mm14 parts2LNo license4
AVR/ArduinoWeather sensors
pypilot
75.1 × 50 mm42 parts2LNo license3
AVR/ArduinoLayoutManagerX
bask185
80 × 56.5 mm35 parts2LNo license3
AVR/ArduinoLattepanda breakout
oats-center
39.4 × 76.2 mm26 parts4LNo license3
AVR/ArduinoTx04-mx09
McbeEringi
99.1 × 96.5 mm17 parts2LMIT2
AVR/ArduinoWater Quality Sensor
ARTS-Laboratory
44 × 58.5 mm8 parts2LCC-BY-SA-4.02
AVR/ArduinoElevator altimeter
reivax-boucoi
100 × 55 mm40 parts2LNo license1
AVR/ArduinoMyIOShield
mwwhited
128.5 × 97.1 mm24 parts2LMIT1
AVR/ArduinoAtmega16m1-breakout
formicidae-tracker
46 × 33 mm22 parts2LNo license1
AVR/ArduinoRobust io.before xtalgnd
lusher00
160 × 100 mm259 parts4LCustom license0
AVR/ArduinoFourier left
IndianBoy42
124.4 × 80.4 mm68 parts2LNo license0
AVR/ArduinoMain
rhinocerose
30 × 110.5 mm49 parts2LNo license0
AVR/ArduinoArduino delay
gridbugs
55.1 × 151.8 mm47 parts2LMIT0
AVR/ArduinoGen 6 ts indicator v1.0
HKUST-Red-Bird-Racing-EVRT
66.8 × 60 mm46 parts2LNo license0
AVR/ArduinoCarte de commande d'un OYA - Esclave RS485
bpmine
79.2 × 30 mm37 parts2LNo license0
AVR/ArduinoMP Board
roberto314
100 × 100 mm34 parts2LBSD-2-Clause0
AVR/ArduinoEncoders-LCD
jvegaf
100 × 76 mm24 parts2LNo license0
AVR/ArduinoSensor and Display Module
Paa-Kwasi-04
64.3 × 88.9 mm21 parts2LNo license0
AVR/ArduinoMppt buck
MadsRudolph
104 × 104 mm20 parts2LNo license0
AVR/ArduinoTiny13fan button
minamonra
30 × 35 mm20 parts2LNo license0
AVR/ArduinoIRboard5.0
kapibaratomo
99.1 × 99.1 mm18 parts2LNo license0
AVR/ArduinoATMEGA328P
Tert2
36 × 37.5 mm17 parts4LNo license0
AVR/ArduinoCodeurV2
ARIG-Robotique
54.4 × 54.1 mm11 parts2LNo license0
AVR/ArduinoGeminiArduinoMez
paulbuzzby
62.6 × 81.3 mm9 parts2LNo license0
AVR/Arduino22001
marian-scientific
78.7 × 52.8 mm8 parts2LNo license0
AVR/ArduinoDrum trigger adapter
adeboni
58 × 20 mm7 parts2LNo license0
AVR/ArduinoControl Panel Mega Shield
Enthusela
98.1 × 55.9 mm6 parts2LNo license0
AVR/ArduinoTau2 Breakout
gregdavill
45 × 78 mm32 parts4LNo license178
AVR/ArduinoDrift
QuinnFreedman
18 × 100 mm34 parts2LNo license114
AVR/ArduinoEnv
bread-modular
30.5 × 68.6 mm29 parts2LMIT65
AVR/ArduinoATtiny85 Charlieplex LED Grid
rjwalters
50 × 55 mm19 parts2LMIT63
AVR/ArduinoPocket knife sense
unsurv
14.8 × 38.8 mm15 parts4LNo license49
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