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/ArduinoPanel
ZeniteSolar
52.1 × 121.3 mm50 parts2LGPL-3.02
AVR/ArduinoDual mentor
F6ITU
100 × 100 mm48 parts2LNo license2
AVR/ArduinoGioia rgb 01
Green-bms
30 × 30 mm46 parts2LNo license2
AVR/ArduinoFLIGHT CONTROLLER
justraven
82.9 × 83.1 mm45 parts2LMIT2
AVR/ArduinoMain board 8S2
Adept666
114.3 × 86.4 mm43 parts2LGPL-3.02
AVR/ArduinoOptiem
Elektroniikkakerho
60.2 × 54.1 mm42 parts2LGPL-3.02
AVR/ArduinoArdui89 UNO
Cyrillinux
68.8 × 53.5 mm41 parts2LNo license2
AVR/ArduinoPwm5940if uno mini
botanicfields
68.6 × 53.3 mm40 parts2LCC0-1.02
AVR/ArduinoArm board
elkel53930
39 × 31 mm39 parts2LMIT2
AVR/ArduinoCounter pneumatic v1
jekhor
91.4 × 116.2 mm38 parts2LNo license2
AVR/ArduinoPower board
ksurct
99.1 × 99.1 mm37 parts2LApache-2.02
AVR/ArduinoOBD to AHU
joshajohnson
69.5 × 68.6 mm35 parts2LCERN-OHL-S-2.02
AVR/ArduinoEmuprom
agkaminski
61.5 × 87.6 mm33 parts2LCC0-1.02
AVR/ArduinoLaser Stripe Sensor
lindamao-waterloop
68.6 × 53.3 mm33 parts2LNo license2
AVR/ArduinoGNSS GPS L86-M33 breakout with easyC panel
SolderedElectronics
162 × 164 mm31 parts2LTAPR-OHL-1.02
AVR/ArduinoPCB1 Mainboard
Andreas-Wahl
78.7 × 38.1 mm28 parts2LCC-BY-NC-4.02
AVR/ArduinoNewshield
love481
81.9 × 104.8 mm27 parts2LApache-2.02
AVR/ArduinoW6502ctrl mega routed
kuwatay
101.6 × 53.3 mm27 parts2LNo license2
AVR/ArduinoPluralsight Drumkit
jzkmath
101.6 × 53.3 mm24 parts2LGPL-3.02
AVR/ArduinoTemp
vedantjadhav304
59 × 35.1 mm23 parts2LNo license2
AVR/ArduinoApple ii cassette adapter
erikarn
103.9 × 87.1 mm22 parts2LNo license2
AVR/ArduinoRun
mschuldt
34.3 × 77.5 mm22 parts2LNo license2
AVR/ArduinoUSB Saturn obdev flat USB
mark-dawn
72.6 × 47.2 mm17 parts2LGPL-3.02
AVR/ArduinoQC Hack wPins
Fab-Lab-Island
26.1 × 31.4 mm15 parts2LNo license2
AVR/ArduinoI-PROTECT3
PsVenom
49.5 × 21.6 mm13 parts4LNo license2
AVR/ArduinoNrfShield
douglaslyon
68.6 × 53.3 mm10 parts2LGPL-3.02
AVR/ArduinoCoil Winder
bmgxyz
48 × 48 mm7 parts2LNo license2
AVR/ArduinoMithril
sanfeps
269.8 × 158.8 mm211 parts4LNo license1
AVR/ArduinoSlim style
Neil-de-grass-eating-Bisson
386 × 101.5 mm194 parts2LNo license1
AVR/ArduinoLine V7 ATmega2560
Gamu2124
120.9 × 152.5 mm188 parts4LNo license1
AVR/ArduinoKeyboard
ManoShu
298.5 × 127 mm170 parts2LMIT1
AVR/ArduinoCross river gorilla
KingMalur
295.3 × 110.3 mm150 parts2LNo license1
AVR/ArduinoSwing
lucanastasio
50 × 50 mm146 parts4LNo license1
AVR/ArduinoJust Split
semicontinuity
128.2 × 112.4 mm127 parts2LNo license1
AVR/ArduinoMain panel control
137.2 × 103.5 mm120 parts2LGPL-3.01
AVR/ArduinoBoard
ak1211
160 × 100 mm118 parts2LMIT1
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