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/ArduinoTransmitter Schematics
devansh2004sharma-tech
49.5 × 78 mm14 parts2LNo license0
AVR/ArduinoRainGauge
ARTS-Laboratory
64 × 40.5 mm14 parts2LCC-BY-SA-4.00
AVR/ArduinoBNO055 circuit i2C V2
Olin-Rocketry
13.8 × 13.3 mm13 parts2LNo license0
AVR/ArduinoProgramming interface
saktheeswaranswan
53.3 × 48.3 mm12 parts2LMIT0
AVR/Arduino1 1
BooyahDev
80 × 50 mm12 parts2LUnlicense0
AVR/ArduinoArduinoShield
BioroboticsLab
55 × 53 mm12 parts2LApache-2.00
AVR/ArduinoSENSORES METEOROLOGICOS
nicolasmino
40 × 65 mm11 parts2LNo license0
AVR/ArduinoMinus main
cogip
2.5 × 2.5 mm10 parts2LNo license0
AVR/ArduinoKontroler
ari-hartawan
60 × 50 mm10 parts2LNo license0
AVR/ArduinoArduino socket
Iver-Iscariot
40.6 × 41.6 mm10 parts2LNo license0
AVR/ArduinoKiCad Tut.1
uniqueacevedo
80.9 × 53.7 mm10 parts4LMIT0
AVR/ArduinoImu board
eshazen
11.2 × 18 mm10 parts4LNo license0
AVR/ArduinoDigistump ATtiny auto router test
Hasona57
37.8 × 12 mm10 parts2LNo license0
AVR/ArduinoPromini rfm95w
13
17.8 × 60 mm9 parts2LNo license0
AVR/ArduinoRGB Par
cookiemonsternz
28 × 28 mm9 parts2LNo license0
AVR/ArduinoPcb mod arduino
miguelitoVargas
116 × 100 mm8 parts2LNo license0
AVR/ArduinoB780 CPU
chregu82
36 × 70 mm8 parts2LNo license0
AVR/ArduinoCEWB
aJax-EXE
90 × 59.5 mm8 parts2LGPL-3.00
AVR/ArduinoRN2483shield
MOSH-Insa-Toulouse
68.9 × 53.6 mm8 parts2LNo license0
AVR/ArduinoTransmitter
navneet-krishna
70 × 85 mm7 parts2LNo license0
AVR/ArduinoArduino uno sheild
kitspace-test-repos
68.6 × 53.3 mm7 parts2LApache-2.00
AVR/ArduinoController
domenipavec
90 × 30 mm7 parts2LMIT0
AVR/ArduinoOpenscex mini
gufranco
35.6 × 25.1 mm6 parts2LMIT0
AVR/ArduinoRc car receiver
rudranshgoel1
54 × 74 mm4 parts2LNo license0
AVR/ArduinoDrone bms
AMLing2
20 × 10 mm4 parts2LMIT0
AVR/ArduinoDecoupling-01
P-r-i-t-h-v-i
35 × 25 mm3 parts2LNo license0
AVR/ArduinoProgrammer
derpflanz
57.2 × 73.7 mm3 parts2LNo license0- schematic only · 253 partsAVR/Arduino
Camper van
akladnig
253 parts2LNo license0 - schematic only · 50 partsAVR/Arduino
Task2
Omkar1464
50 parts2LNo license0 - schematic only · 45 partsAVR/Arduino
Macropad
hujohn1
45 parts2LNo license0 
AVR/ArduinoMod cell 0 02 prima prova
Green-bms
62 × 42 mm33 parts2LCC-BY-SA-4.0752
AVR/ArduinoTERES-PCB5-KEYBOARD Rev.A
OLIMEX
68.5 × 34.5 mm46 parts2LApache-2.0572
AVR/ArduinoPassword
limpkin
52.1 × 30.1 mm54 parts2LNo license528
AVR/ArduinoREVIUNG34
gtips
214.8 × 107.2 mm89 parts2LMIT516
AVR/ArduinoUsb minecraft
cnlohr
12 × 16.5 mm9 parts2LNo license472
AVR/ArduinoArduino eeprom programmer
vascofazza
68.7 × 53.5 mm8 parts2LMIT314
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