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/ArduinoFlashProgrammer
jdisanti
61 × 38.1 mm47 parts2LApache-2.02
AVR/ArduinoPov led clock
qb-creates
176.4 × 21.4 mm47 parts2LMIT2
AVR/ArduinoAuto dimmer
ilyushkin
51 × 70 mm46 parts2LGPL-3.02
AVR/ArduinoSolar lora
mattvenn
60 × 60 mm45 parts2LNo license2
AVR/ArduinoTHW-Badge
lugsaar
84.9 × 82.9 mm44 parts2LCC-BY-NC-4.02
AVR/ArduinoFLT/ART/CU-1 ROM reader
trwgQ26xxx
94 × 57.5 mm44 parts2LCC-BY-NC-4.02
AVR/ArduinoMain board 8P3
Adept666
114.3 × 86.4 mm43 parts2LGPL-3.02
AVR/ArduinoOnyks atxmega256-devboard
knonyks
55 × 102 mm43 parts4LMIT2
AVR/ArduinoPossu2
Elektroniikkakerho
48.9 × 67.3 mm43 parts2LGPL-3.02
AVR/ArduinoWindSensor
curiouselectric
44.9 × 44.9 mm42 parts2LNo license2
AVR/ArduinoTSRCT-PT100-SSR-PID-Temperature-Controller
hefinn-lab
90 × 80 mm42 parts2LCustom license2
AVR/ArduinoArduinoMICRACK
seismicindustries
19 × 108 mm41 parts2LNo license2
AVR/ArduinoPCB Christmas Tree
KNEAGHUST
100 × 98.6 mm41 parts2LMIT2
AVR/ArduinoBetaBoard
BetaWall
144.8 × 204.5 mm40 parts2LAGPL-3.02
AVR/ArduinoCIWS-MWM-Logger
UCHIC
110 × 60 mm40 parts2LBSD-3-Clause2
AVR/ArduinoPlanEt SMD
WorldWilderLab
53.3 × 68.6 mm40 parts2LNo license2
AVR/ArduinoMoriduino
akita11
68.6 × 53.3 mm40 parts2LMIT2
AVR/ArduinoProximity Sensor Mother Board
eigenpi
33 × 88.9 mm40 parts2LNo license2
AVR/ArduinoMercury 2021
ksurct
100 × 100 mm40 parts2LApache-2.02
AVR/ArduinoShiny avr
tibordp
54.4 × 20.3 mm39 parts4LBSD-2-Clause2
AVR/ArduinoContinuity tester
vpatkov
52.1 × 65.4 mm37 parts2LNo license2
AVR/ArduinoChaos papagali
Pakequis
49.4 × 43.7 mm36 parts2LMIT2
AVR/ArduinoSbc6502a1
tkhshmsy
95 × 100 mm36 parts2LMIT2
AVR/ArduinoScheda livello serbatoio
giorossi91
83 × 72 mm35 parts2LGPL-3.02
AVR/ArduinoDIYduino
szdiy
68.6 × 53.3 mm35 parts2LCC-BY-SA-4.02
AVR/ArduinoOmamori
felixmark
25 × 35 mm34 parts2LNo license2
AVR/ArduinoReiyyeesr
frgrw
40 × 54 mm34 parts2LTAPR-OHL-1.02
AVR/ArduinoSpeedRadar
jwchang418
47 × 40 mm34 parts2LNo license2
AVR/ArduinoKFDToolSW NET4.0
gatekeep
68.6 × 53.3 mm34 parts2LMIT2
AVR/ArduinoArduino Nano
RudraKumar1218
46.2 × 22.4 mm33 parts4LNo license2
AVR/ArduinoSmartPlant
aleksul
48 × 75.3 mm32 parts2LMIT2
AVR/ArduinoTms5220-atmega
madworx
74.9 × 48.3 mm32 parts2LNo license2
AVR/ArduinoPin check
htpkbs
76.2 × 53.3 mm32 parts2LBSD-2-Clause2
AVR/ArduinoSyzygy breakout flash-LVL
adamcritchley
44.6 × 90 mm32 parts4LMIT2
AVR/ArduinoLisa-Twiggy-Breakout-Board
DosFox1
198.1 × 50.8 mm32 parts2LGPL-3.02
AVR/ArduinoHM-LC-Bl1-FM-DC
stan23
53.1 × 26.9 mm32 parts2LNo license2
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