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/ArduinoRobust io.before fix3
lusher00
160 × 100 mm259 parts4LCustom license0
AVR/ArduinoRetro-001
githubgilhad
100 × 100 mm241 parts2LGPL-3.00
AVR/ArduinoBDUCU
HKUST-Red-Bird-Racing-EVRT
140 × 60 mm169 parts2LNo license0
AVR/ArduinoSystem.refined
MadsRudolph
203.1 × 152.4 mm131 parts2LNo license0
AVR/ArduinoConnectBox HAT using RPi CM4
ConnectBox
105 × 78 mm130 parts4LNo license0
AVR/Arduino7SEG 3
AbdELRahmanGamiel
166.2 × 95.6 mm130 parts2LNo license0
AVR/ArduinoUT47.2
IndianBoy42
238.1 × 76.2 mm128 parts2LNo license0
AVR/ArduinoAsymRight
esouthren
290.2 × 126.1 mm115 parts2LGPL-3.00
AVR/ArduinoMega Controller
prasad73
285 × 174.6 mm113 parts2LNo license0
AVR/ArduinoSCU rig control
OisinS13
265.5 × 150 mm110 parts2LGPL-3.00
AVR/ArduinoSensor board
nEDM-TUM
65 × 137 mm97 parts2LNo license0
AVR/ArduinoLed matrix board right
arkonique
117 × 58.5 mm95 parts4LNo license0
AVR/ArduinoDispensador Garrafones V2.0
EmersonEE
200 × 90 mm87 parts2LNo license0
AVR/ArduinoMss cascade basic
IowaScaledEngineering
82.6 × 76.2 mm85 parts2LNo license0
AVR/ArduinoController
kuellenberg
213 × 24 mm82 parts2LNo license0
AVR/ArduinoKeeb v1
celcius-plus-273
152.4 × 114.3 mm79 parts2LNo license0
AVR/ArduinoAdafruit Circuit Playground
Human-Computer-Integration-Lab
61 × 60 mm78 parts16LNo license0
AVR/ArduinoVizitka usb Michal
Meteopresscz
90 × 50 mm78 parts2LNo license0
AVR/ArduinoNO2C
MIsfitMatty
99.4 × 53.7 mm78 parts2LGPL-2.00
AVR/ArduinoRMK-right
KarlPeter5039
182.9 × 127 mm76 parts2LNo license0
AVR/ArduinoAnzeige-Modul
yannickbock
137 × 102 mm68 parts2LNo license0
AVR/ArduinoMotor-Board
martinfantini
225.5 × 186 mm66 parts2LNo license0
AVR/ArduinoLaser-Guided Tracking Servo Breadboard
MVaugn
182.9 × 114.3 mm66 parts2LNo license0
AVR/ArduinoORA Control Board Rev 2
oaklandrobotics
100 × 52.5 mm61 parts2LNo license0
AVR/ArduinoARGB Board
Enthusela
75.2 × 53.6 mm61 parts2LNo license0
AVR/ArduinoControl
Jonny999999
82 × 124 mm61 parts2LNo license0
AVR/ArduinoORA Control Board Rev 2
gtrupiano
100 × 52.5 mm61 parts2LNo license0
AVR/ArduinoMotor
marc-cr1810
149.9 × 137.1 mm58 parts2LNo license0
AVR/ArduinoCarte testeur d'Oya
bpmine
99 × 99 mm58 parts2LNo license0
AVR/ArduinoValhalla UFH Sensor (SMT)
csdexter
99.6 × 64.3 mm53 parts2LGPL-3.00
AVR/Arduino1dofcopter
ieee-cas-unmsm
94.9 × 88.4 mm52 parts2LNo license0
AVR/ArduinoFinal Board v3-triple transformer
Petros-Kapetanios
79.3 × 87.5 mm52 parts2LNo license0
AVR/ArduinoPowerMeter2025
papurika37
101.3 × 23.1 mm52 parts2LNo license0
AVR/ArduinoBalloon Sat Tracker
LeemanGeophysicalLLC
78.7 × 57.2 mm52 parts4LNo license0
AVR/ArduinoBMS
magwas
260 × 18 mm52 parts2LNo license0
AVR/ArduinoMini-Keyboard MKII
hsaito18
79 × 102.5 mm51 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