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/ArduinoLr 40
Dade3e
39 × 19 mm27 parts2LNo license0
AVR/ArduinoM128 clock
eshazen
95.8 × 81.3 mm26 parts2LNo license0
AVR/ArduinoNano every
feastorg
43.2 × 17.8 mm26 parts2LGPL-3.00
AVR/Arduino${project name}
Darshan7052006
49.2 × 33.5 mm25 parts2LNo license0
AVR/ArduinoSpar Sensor
hpvdt
40.3 × 15.8 mm25 parts2LNo license0
AVR/ArduinoKeyboard3x3
Code-Tomato
69.9 × 38.1 mm25 parts2LMIT0
AVR/ArduinoPCB ATCE
Pauloux
40.3 × 33.3 mm25 parts2LGPL-3.00
AVR/ArduinoMCU Datalogger003 4Layer
YUKESH0620
57.2 × 39.1 mm25 parts4LMIT0
AVR/ArduinoKIT
George-Emad31
87.8 × 52.1 mm24 parts2LNo license0
AVR/ArduinoTurnTimer
ihmnelson
100 × 100 mm23 parts2LNo license0
AVR/ArduinoMedalv2
VincentPeters
45 × 45 mm22 parts2LMIT0
AVR/ArduinoRGB Mood Light V1
motiforge-labs
60 × 70 mm21 parts2LNo license0
AVR/ArduinoBike oshpark
eliassjogreen
45.7 × 50.8 mm21 parts2LMIT0
AVR/ArduinoV1
MOSH-Insa-Toulouse
68.6 × 53.3 mm21 parts2LNo license0
AVR/ArduinoGMote Mini
hackdaworld
33.8 × 24.6 mm21 parts2LGPL-3.00
AVR/ArduinoDomoticata wall terminal
LoZioo
35.6 × 39.4 mm21 parts2LMIT0
AVR/ArduinoButton Box
lusmdl
49.7 × 53.1 mm20 parts2LMIT0
AVR/ArduinoUSBAsp
mekatronik-achmadi
29.6 × 33.6 mm20 parts2LNo license0
AVR/ArduinoModuleController old
dennis9819
68.3 × 90 mm20 parts2LAGPL-3.00
AVR/ArduinoSchematic start module sumo IR V0 16 v1
Alex-C-EE
10.4 × 11.4 mm20 parts2LNo license0
AVR/ArduinoFinal
cshieldsce
59.1 × 55.4 mm20 parts2LNo license0
AVR/ArduinoPrrpls406-panel
jimktrains
48 × 48 mm20 parts2LAGPL-3.00
AVR/ArduinoTest1
HACManchester
50.3 × 51.3 mm19 parts2LNo license0
AVR/ArduinoCicuit Bar
EthanSousaProjects
67.9 × 55.7 mm18 parts2LGPL-3.00
AVR/ArduinoPrrplsattiny20 kikit panel
57 × 57 mm18 parts4LNo license0
AVR/ArduinoCombat
mkhrenov
73.4 × 41.9 mm17 parts2LNo license0
AVR/ArduinoSender r3 external
p-keminer
165.5 × 125.5 mm17 parts2LMIT0
AVR/ArduinoBaBot Base THT
Hemlock-white
100 × 98.9 mm17 parts2LNo license0
AVR/ArduinoCgranja piscineElec design
Croco41
37 × 41 mm17 parts2LNo license0
AVR/ArduinoCgranja piscineElec design
37 × 41 mm17 parts2LNo license0
AVR/ArduinoAtmega328 minimal V20
rzuehlsd
35.6 × 59.2 mm17 parts2LNo license0
AVR/ArduinoPSX64 Adapter
Commodore-Bench
40.5 × 19 mm16 parts2LCC-BY-NC-4.00
AVR/ArduinoController
astra-the-boop
39.3 × 42.1 mm16 parts2LNo license0
AVR/ArduinoJ2o Board
JJaroll
82.6 × 52.5 mm16 parts2LLGPL-3.00
AVR/ArduinoCoilonplugv3
swagprincess
26.3 × 33.4 mm15 parts2LGPL-3.00
AVR/ArduinoPower board v2
ARTS-Laboratory
30.7 × 53.4 mm14 parts2LCC-BY-SA-4.00
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