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/ArduinoCat644
carangil
101.6 × 76.2 mm46 parts2LGPL-2.011
AVR/ArduinoNoahFC
zosko
32 × 42 mm41 parts2LGPL-3.011
AVR/ArduinoHome automatics
ranseyer
149 × 127 mm37 parts2LNo license11
AVR/ArduinoRpi dbt03
bildschirmtext
64 × 56 mm36 parts2LMIT11
AVR/ArduinoEvoluent better
mon
35 × 54 mm30 parts2LMIT11
AVR/ArduinoAttach hexa
uzsito
91.3 × 25.9 mm18 parts2LGPL-3.011
AVR/ArduinoOpenkey kabuki
jwestfall69
18.3 × 51.4 mm10 parts2LUnlicense11
AVR/ArduinoCtf shittyaddon
urish
20 × 20 mm5 parts2LMIT11
AVR/ArduinoPcb arcade encoder
klein0r
56.6 × 38.7 mm3 parts2LMIT11
AVR/ArduinoMini mass prog bench
limpkin
600 × 110 mm420 parts4LMIT10
AVR/ArduinoLCK75
lyso1
317.3 × 154.8 mm201 parts2LMIT10
AVR/ArduinoKatana60
rominronin
285 × 95.1 mm180 parts2LNo license10
AVR/ArduinoHearty-LED-Necklace-Badge
niteshkadyan
66.7 × 61.7 mm173 parts2LMIT10
AVR/ArduinoELiXiVy
minibois
302.2 × 93.5 mm166 parts2LNo license10
AVR/ArduinoZuendbox v3 32
fixxl
213.6 × 127.5 mm153 parts2LNo license10
AVR/ArduinoNodu
swiftrax
285 × 94.6 mm128 parts2LCC0-1.010
AVR/ArduinoBadge
joshbressers
76.2 × 113 mm99 parts2LApache-2.010
AVR/ArduinoIQ SDR
frohro
100 × 100 mm96 parts2LNo license10
AVR/ArduinoMidi2gate
sebastianbeyer
74 × 175 mm75 parts2LNo license10
AVR/ArduinoAtmega328kb
ccadic
112 × 62 mm74 parts2LNo license10
AVR/ArduinoAntdroid board
antdroid-hexapod
99.5 × 53.7 mm58 parts2LCC-BY-SA-4.010
AVR/ArduinoStormduino
Chromico
68.6 × 53.3 mm45 parts2LMIT10
AVR/ArduinoTionO2-ZigBee
kvazimoda24
72 × 45 mm44 parts2LNo license10
AVR/ArduinoBell-Boy
BBUK
64 × 30 mm31 parts2LTAPR-OHL-1.010
AVR/ArduinoUPDI programmer
dbuchwald
67.3 × 25.4 mm29 parts2LMIT10
AVR/ArduinoBreath controller
vpatkov
66 × 25.4 mm26 parts2LNo license10
AVR/ArduinoAVR488
VE7PMC
86 × 70 mm24 parts2LGPL-3.010
AVR/ArduinoTiny85fancontrol
Colahall
25.4 × 25.4 mm11 parts2LMIT10
AVR/ArduinoPCB Design DD
Vishwakarma10036
60 × 60 mm9 parts2LNo license10
AVR/ArduinoLeeChee
Gacathon
378.4 × 156.9 mm556 parts2LNo license9
AVR/ArduinoK8split
Ckath
397.3 × 128.1 mm212 parts2LMIT9
AVR/ArduinoRvi v2x hardware
PDXostc
85 × 56 mm186 parts2LMPL-2.09
AVR/ArduinoCornel
hibiyasleep
268.5 × 110.5 mm182 parts2LNo license9
AVR/ArduinoSynth Labs 060 Hotswap RGB
0xCB-dev
285 × 95 mm176 parts2LCustom license9
AVR/ArduinoPinstripe
null-ll
323.9 × 123 mm162 parts2LGPL-2.09
AVR/ArduinoMa42
anschwa
236.7 × 74.7 mm107 parts2LMIT9
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