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/ArduinoRescueAVRAdapter
felias-fogg
68.6 × 53.3 mm8 parts2LNo license56
AVR/ArduinoBemini atmel au
ianklug
199 × 65 mm43 parts2LCC-BY-SA-4.055
AVR/ArduinoProgrammer
benanderman
99.6 × 59.9 mm106 parts2LMIT54
AVR/ArduinoSmartportsd nano shield
djtersteegc
69.9 × 55.9 mm17 parts2LMIT54
AVR/ArduinoRosaline
peej
285.4 × 94.9 mm137 parts2LMIT52
AVR/ArduinoArduino NMR 5.2
SoukeyCircuits
100 × 75 mm76 parts4LGPL-3.052
AVR/ArduinoAmiga Drawbridge
tebl
90 × 94 mm18 parts2LNo license51
AVR/ArduinoBreadControlV2-rounded 3
Architeuthis-Flux
82.6 × 53.3 mm58 parts2LGPL-3.050
AVR/ArduinoKeyboard
danwerner21
282.7 × 108.3 mm57 parts2LNo license50
AVR/ArduinoPocket knife sense display
unsurv
14.8 × 38.8 mm29 parts4LNo license49
AVR/ArduinoQuefrency left macro
keebio
181 × 99.4 mm93 parts2LMIT45
AVR/ArduinoRow driver
CarlRaymond
100 × 100 mm80 parts2LNo license44
AVR/ArduinoParadox
odeliy
38 × 110 mm114 parts2LNo license37
AVR/ArduinoCONTROL SYSTEMS MODULE
CodapopKSP
13 × 14 mm94 parts2LGPL-3.037
AVR/ArduinoReference
doughnut923
339.1 × 118.7 mm183 parts2LMIT36
AVR/ArduinoHex
thebiguno
49.5 × 49.5 mm54 parts2LNo license36
AVR/ArduinoRailroad keyboard pcb only
nopunin10did
448.5 × 103.1 mm217 parts2LCC-BY-SA-4.035
AVR/ArduinoThundervolt lite
mackieks
46.9 × 54.8 mm46 parts4LNo license35
AVR/ArduinoVault35 ortho rounded
galvy0
209.7 × 76.4 mm131 parts2LUnlicense33
AVR/ArduinoIolite
jtsiomb
149 × 100 mm47 parts2LCC-BY-SA-4.032
AVR/ArduinoMixer
rabidaudio
30.5 × 128.5 mm91 parts4LMIT31
AVR/ArduinoUkiha
e3w2q
200 × 88 mm125 parts2LMIT29
AVR/ArduinoSD2IEC Pluggable
hackup
100 × 98.7 mm44 parts2LNo license29
AVR/ArduinoC64 Joykey
99.7 × 74.9 mm61 parts2LCERN-OHL-1.227
AVR/ArduinoTenn
T3nk4I
86 × 25 mm30 parts2LGPL-2.027
AVR/ArduinoUsbcounter
swharden
91.4 × 60.9 mm45 parts2LMIT25
AVR/Arduino40pin AVRMCU
ExploreEmbedded
40 × 75 mm20 parts2LNo license25
AVR/ArduinoLyra beta
PiKeeb
322.3 × 82.1 mm165 parts2LCustom license24
AVR/ArduinoDisplaywriter usb
BASLQC
119.8 × 32.5 mm38 parts2LGPL-3.024
AVR/ArduinoUnison Plate Mid
jpskenn
285 × 95.1 mm281 parts2LMIT23
AVR/ArduinoBlinkySWR-0.1
bubnikv
50.5 × 28.5 mm44 parts2LGPL-2.023
AVR/ArduinoArduino Uno Rev3-02-TH
bobc
68.6 × 53.3 mm57 partsNo license22
AVR/ArduinoRetroZ-disk
formix
76.2 × 73.7 mm22 parts2LApache-2.022
AVR/ArduinoGreaseweazle F1 Plus 3.5
solarmon
170.2 × 100 mm85 parts2LNo license21
AVR/ArduinoAVLO68
johnplanow
356.5 × 105.4 mm112 parts2LMIT20
AVR/ArduinoLeft
csun
190.5 × 125.7 mm72 parts2LCustom license20
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