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/ArduinoGNSS GPS L86-M33 breakout with easyC
SolderedElectronics
54 × 38 mm31 parts2LTAPR-OHL-1.02
AVR/ArduinoRbServo
RasmusB
17.8 × 28.5 mm31 parts4LNo license2
AVR/ArduinoBIGMAX
ideometre
190.5 × 94 mm31 parts2LUnlicense2
AVR/ArduinoMainboard
Sprudlwassr
45.2 × 43.6 mm30 parts2LGPL-3.02
AVR/ArduinoMenorah
azzeloof
111.6 × 130.3 mm30 parts2LNo license2
AVR/ArduinoW6502ctrl mega
kuwatay
101.6 × 53.3 mm30 parts2LNo license2
AVR/ArduinoI protect2.0
PsVenom
49.5 × 21.6 mm30 parts4LNo license2
AVR/ArduinoUedaino
fabkominka
50 × 65 mm30 parts2LNo license2
AVR/ArduinoJeden board
Wojtekb30
62.5 × 61.5 mm29 parts2LCustom license2
AVR/ArduinoArduino-MidiDmxBridge
chrisneukam
65 × 47 mm29 parts2LApache-2.02
AVR/ArduinoMain
teostefan
65 × 30 mm28 parts2LNo license2
AVR/ArduinoNUcr
NUbots
65.4 × 66.7 mm28 parts2LNo license2
AVR/ArduinoApple ii ps2-keyboard
erikarn
63.2 × 51.3 mm27 parts2LNo license2
AVR/ArduinoButterfly hw
mignon-p
93.1 × 65.5 mm26 parts2LCC-BY-SA-4.02
AVR/ArduinoZ180 motherboard
Hyiger-Designs
112.8 × 51.7 mm26 parts2LNo license2
AVR/ArduinoATMEGA328P-AU Data-Logger
pushtiujeniya
53 × 36.2 mm25 parts2LNo license2
AVR/ArduinoAvr irremote led lamp
QuintusJoyal
61 × 51 mm25 parts2LNo license2
AVR/ArduinoDelay
mschuldt
34.3 × 77.5 mm25 parts2LNo license2
AVR/ArduinoMacr0
Clewsy
44.5 × 44.5 mm24 parts2LMIT2
AVR/ArduinoAtmega32
vedantjadhav304
66.8 × 46 mm23 parts2LNo license2
AVR/ArduinoKiCad-ATMega-Board
DoImant
92 × 48.7 mm23 parts4LCC-BY-SA-4.02
AVR/ArduinoWatch
tux2603
27.5 × 27.5 mm23 parts2LCC-BY-NC-4.02
AVR/ArduinoArcDice
VorosEgyes
70 × 70 mm22 parts2LMIT2
AVR/ArduinoRelay driver shield
njh
35.6 × 46.4 mm21 parts2LCC-BY-SA-4.02
AVR/ArduinoOrnament2022
Chris-Johnston
1.6 × 1.6 mm20 parts2LNo license2
AVR/ArduinoOven
hpvdt
54.6 × 108 mm20 parts2LNo license2
AVR/ArduinoScrambler
artichoked1
45 × 55 mm20 parts2LNo license2
AVR/ArduinoTK-80BS SD
yanataka60
142.5 × 78 mm19 parts2LMIT2
AVR/ArduinoCE-PiicoDev-Transceiver-915-MHz
CoreElectronics
25.4 × 52 mm19 parts2LMIT2
AVR/ArduinoCopperhead quiet orbit
copperheadhq
57 × 57 mm19 parts2LCustom license2
AVR/ArduinoKicad homeatic minimal
olliiiver
43 × 28 mm19 parts2LMIT2
AVR/ArduinoVoltage amplifier
Sussex-Neuroscience
111.5 × 85.1 mm19 parts2LGPL-3.02
AVR/ArduinoUSB Saturn obdev
mark-dawn
79.3 × 47.9 mm17 parts2LGPL-3.02
AVR/ArduinoADB2USBC
KlemensMaentele
33 × 48 mm17 parts2LNo license2
AVR/ArduinoDIY Mouse
aSharcc
52 × 99 mm17 parts2LMIT2
AVR/ArduinoSand-Plotter
tim-callinan
68.6 × 53.3 mm15 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