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/Arduino${project name}
Poojaa-Rangaiah
50.3 × 32 mm25 parts4LNo license0
AVR/ArduinoCosmonode ext 04
exostic
25.4 × 34.3 mm25 parts2LNo license0
AVR/ArduinoPOV PCBv1
Aitthikit
100 × 100 mm24 parts2LNo license0
AVR/ArduinoATCE
LeaGuyon
32 × 35 mm24 parts2LNo license0
AVR/ArduinoUnicorn
HaCraFu
78.4 × 81 mm22 parts2LCC-BY-NC-4.00
AVR/ArduinoPRODIGY-ATMEGA2560
mark69163
55 × 40 mm22 parts4LNo license0
AVR/ArduinoSRAM Programming
PhysicsUofRAUI
109.2 × 57.2 mm20 parts2LMIT0
AVR/ArduinoISP Programmer
dmiracle
35 × 29 mm20 parts2LNo license0
AVR/ArduinoCANBOARD REV3
RoanTractor
85 × 65 mm19 parts2LNo license0
AVR/ArduinoBase shield
railroad-editor
99.1 × 53.3 mm18 parts2LNo license0
AVR/ArduinoShield
rjacoby00
94 × 91.4 mm17 parts4LNo license0
AVR/ArduinoTutorial02
D76X
39.3 × 55 mm17 parts2LNo license0
AVR/ArduinoBaBot Base THT 4067 Module
Hemlock-white
100 × 99.3 mm16 parts4LNo license0
AVR/ArduinoPlaca J20 - Adaptador VGA iMac G3 DV (traduccion al espanol)
JJaroll
82.6 × 52.5 mm16 parts2LLGPL-3.00
AVR/ArduinoMemory board
edatki
124 × 70 mm15 parts2LNo license0
AVR/ArduinoESP32 OLED Weather Display
motiforge-labs
50 × 90 mm14 parts2LNo license0
AVR/ArduinoScheda Test Arduino
ErPeris
80 × 58 mm14 parts2LNo license0
AVR/ArduinoBNO055 circuit i2C version 3
Olin-Rocketry
13.8 × 13.3 mm13 parts2LNo license0
AVR/ArduinoUSB
NaraenderHardware
40 × 12.2 mm12 parts2LMIT0
AVR/ArduinoAttiny85 USB
lehaihv
54.2 × 12.2 mm12 parts2LNo license0
AVR/ArduinoRain Gauge v0.6.2
ARTS-Laboratory
36.1 × 54.3 mm11 parts2LCC-BY-SA-4.00
AVR/ArduinoOvencontroller
remus4444
66 × 69 mm11 parts2LNo license0
AVR/ArduinoMotorDriver3
aliaafee
50 × 50 mm11 parts2LNo license0
AVR/ArduinoPower
30.5 × 53.3 mm11 parts2LCC-BY-SA-4.00
AVR/ArduinoATmega32-16P
kinsy3015
80 × 90.9 mm10 parts2LNo license0
AVR/ArduinoBroadcastnode
aneeshlingala
36 × 34.8 mm8 parts2LNo license0
AVR/ArduinoForwardCEWB
aJax-EXE
81 × 58.2 mm8 parts2LGPL-3.00
AVR/ArduinoArduino
Abdenry
35 × 65 mm8 parts2LNo license0
AVR/ArduinoArduino eeprom programmer
saktheeswaranswan
68.7 × 53.5 mm8 parts2LMIT0
AVR/ArduinoBlinder
cookiemonsternz
35 × 15 mm7 parts2LNo license0
AVR/ArduinoNeoPixI2C
chirimen-oh
36.8 × 17.8 mm6 parts2LNo license0
AVR/ArduinoFerris sweep ec bottom plate
zwang695
114 × 97.8 mm6 parts2LNo license0
AVR/ArduinoCircuit Pulse Count
EthanSousaProjects
61 × 54.7 mm5 parts2LGPL-3.00
AVR/ArduinoSimple i2c controller
marvec
45.7 × 43.2 mm4 parts2LApache-2.00
AVR/ArduinoOpenscex bare
gufranco
35.6 × 21.6 mm3 parts2LMIT0- schematic only · 22 partsAVR/Arduino
Load cell amplifier
dodotronix
22 parts2LNo 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