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.
- schematic only · 4 partsAVR/Arduino
Atmega8
lhondareyte
4 parts2LCC-BY-4.01 
AVR/ArduinoRobust io.before tp
lusher00
160 × 100 mm259 parts4LCustom license0
AVR/ArduinoFourier right
IndianBoy42
129.2 × 80.4 mm72 parts2LNo license0
AVR/ArduinoSSRU v4.0
HKUST-Red-Bird-Racing-EVRT
95 × 78 mm68 parts2LNo license0
AVR/ArduinoVizitka
Meteopresscz
90 × 50 mm53 parts2LNo license0
AVR/ArduinoDraft PCB for Potential Partnership for E-Bike Conversion
akbar-q
162.6 × 86.4 mm44 parts2LNo license0
AVR/ArduinoImpulsgenerator
apxco
99 × 48.5 mm43 parts2LNo license0
AVR/ArduinoRelay
adarwoo
45 × 72 mm42 parts2LNo license0
AVR/ArduinoMain 2.4
eesakiii
214.9 × 206.5 mm40 parts2LNo license0
AVR/ArduinoCarte de commande d'un Oya par RS485
bpmine
90 × 85 mm37 parts2LNo license0
AVR/ArduinoJogi
Tert2
100 × 99 mm24 parts2LNo license0
AVR/ArduinoChaser Board
Paa-Kwasi-04
51.5 × 60.5 mm22 parts2LNo license0
AVR/ArduinoMppt
MadsRudolph
104 × 104 mm21 parts2LNo license0
AVR/ArduinoIR board
kapibaratomo
99.9 × 99.9 mm18 parts2LNo license0
AVR/ArduinoMain Controller PCB V0.1
danielwilczak101
75.9 × 57.4 mm12 parts2LNo license0
AVR/ArduinoArduino Nano Radio Transmitter
Krzysiek-Mistrz
41.1 × 68.8 mm10 parts2LNo license0
AVR/ArduinoAttiny416 breakout
sdp8483
25 × 41.4 mm9 parts2LMIT0
AVR/ArduinoCosmonode ext07
exostic
34.3 × 34.3 mm7 parts2LNo license0
AVR/ArduinoATtinyBoard
nick1076
29.8 × 18.8 mm6 parts2LNo license0
AVR/ArduinoOSBMS MicroMaster atmega328
Teslafly
49.5 × 49.5 mm31 parts2LNo license248
AVR/ArduinoBoson Breakout
gregdavill
45 × 78 mm35 parts4LNo license178
AVR/ArduinoMiniscope v4-VDD-PIX-FC
Aharoni-Lab
6.5 × 3.5 mm7 parts2LGPL-3.0157
AVR/ArduinoAttiny85-testboard
cnlohr
33 × 25.4 mm5 parts2LMIT105
AVR/ArduinoBlueMacro
jpconstantineau
20.3 × 48.3 mm29 parts4LBSD-3-Clause100
AVR/ArduinoGrooveboard mx atmel mu
ianklug
118.1 × 22.9 mm24 parts2LCC-BY-SA-4.058
AVR/ArduinoNfc sense coin
unsurv
23.3 × 26.4 mm15 parts4LNo license49
AVR/ArduinoNAVIGATION MODULE
CodapopKSP
28 × 28 mm41 parts2LGPL-3.037
AVR/ArduinoZ80DMA2
lynchaj
100 × 100 mm59 parts2LNo license31- schematic only · 42 partsAVR/Arduino
Ma
T3nk4I
42 parts2LGPL-2.027 
AVR/ArduinoGreaseweazle F1 3.5 Rev 2
solarmon
170.2 × 100 mm47 parts2LNo license21
AVR/ArduinoBurgerDisk-THT-SolderTypeDB19
colinleroy
93.7 × 81.5 mm14 parts2LMIT20
AVR/ArduinoBreaz blinky
AravinthPanch
89.4 × 83 mm4 parts2LApache-2.016
AVR/ArduinoSMD
hulkco
34.7 × 21.5 mm20 partsNo license15
AVR/ArduinoTelemetry Core V0
olin-electric-motorsports
76.2 × 63.5 mm57 parts2LNo license14
AVR/ArduinoMSAP-2-production source
mehrantsi
300 × 248.8 mm375 parts6LMIT13
AVR/ArduinoEVOLVER Temperature Calibration Module
FYNCH-BIO
92.7 × 82.6 mm28 parts2LNo license11
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