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/ArduinoOSR120557060
n1LS
110.5 × 97.8 mm89 parts2LNo license0
AVR/ArduinoArray euro
ProgrammableMatter
85.7 × 157.5 mm88 parts2LNo license0
AVR/ArduinoPjcontroller
jdeguire
110.5 × 104.1 mm87 parts2LGPL-3.00
AVR/ArduinoExp60
christian-schulze
285.8 × 95.3 mm87 parts2LMIT0
AVR/ArduinoEMC-Assignment-2
mildcream
82.5 × 61.5 mm87 parts4LNo license0
AVR/ArduinoMotherboard 2023
RoanTractor
241.5 × 74.6 mm86 parts2LNo license0
AVR/ArduinoCARL-Air-Brake-Power-Supply-Hardware
Kenneth-Goveas
65 × 56 mm86 parts2LNo license0
AVR/ArduinoSangaboard
kitspace-test-repos
65 × 56.5 mm85 parts2LCustom license0
AVR/ArduinoBlinkenlights
barafael
66 × 50 mm85 parts2LMIT0
AVR/ArduinoRev2
celcius-plus-273
133.4 × 110.3 mm85 parts2LNo license0
AVR/ArduinoTito
cdrfiuba
65 × 107.5 mm85 partsNo license0
AVR/ArduinoMainboard
aperfectcypher
123.3 × 79.8 mm85 parts2LUnlicense0
AVR/ArduinoDisplayBoard2025
papurika37
121.7 × 37.4 mm85 parts2LNo license0
AVR/ArduinoWedding keepsake
ericmcdaniel
80 × 30 mm85 parts4LMIT0
AVR/ArduinoAlpha34-keyboard
bathoorn
233.4 × 57.2 mm84 parts2LNo license0
AVR/ArduinoBlinCAN
metalhead777
127.1 × 67.1 mm84 parts2LCC-BY-SA-4.00
AVR/ArduinoLine follower
rmingon
93.5 × 97.5 mm84 parts2LNo license0
AVR/ArduinoAtmega328-enclosure tamper alarm
manhoosbilli1
100 × 60 mm83 parts2LNo license0
AVR/ArduinoPatriot Companion
dmiracle
104.7 × 84.8 mm82 parts2LNo license0
AVR/ArduinoCpm vehicle
AaravG42
95 × 50 mm82 parts2LNo license0
AVR/ArduinoTheraPatch
noahalam77-code
61.3 × 61.8 mm82 parts4LMIT0
AVR/ArduinoMaze-Geocahce
dalen01
80 × 130 mm82 parts2LNo license0
AVR/ArduinoMusselGapeTracker RevH
millerlp
72.5 × 57.8 mm82 parts2LGPL-3.00
AVR/ArduinoLed Cube BaseControler 1mm wires
cepdnaclk
180.3 × 96.5 mm82 parts2LNo license0
AVR/ArduinoUDS-logger
rkhvrnen
120 × 60 mm82 parts2LMIT0
AVR/Arduino7mhz ssb trx
ngs
84.5 × 93.4 mm82 parts2LNo license0
AVR/ArduinoPiUPS
Blake-Robotics
65 × 56.5 mm82 parts2LGPL-2.00
AVR/ArduinoTalking Clock
jsyk
189.2 × 72.4 mm81 parts2LNo license0
AVR/ArduinoHome-Automation-System
0101shift
86.4 × 90.2 mm81 parts2LNo license0
AVR/ArduinoRx5808-video receiver
nykleban
80.7 × 102.7 mm81 parts4LNo license0
AVR/ArduinoUniversalRobotController
falue
223.5 × 188 mm81 parts2LNo license0
AVR/ArduinoHw arduino-128-like-2560
eugeneai
101.6 × 53.3 mm81 parts2LNo license0
AVR/ArduinoGLTKB-Back-40-ProMicro-V1
ellisgl
142.9 × 145.3 mm81 parts2LBSD-3-Clause0
AVR/ArduinoQuadCalc
Dovgalyuk
238.8 × 125.7 mm80 parts2LNo license0
AVR/ArduinoPORTABLE-ECG
jeis-aj
64.8 × 25.5 mm80 parts2LMIT0
AVR/ArduinoPower board
MST-Robotics
171.8 × 117.7 mm80 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