2,292 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/ArduinoRedox keyboard
mattdibi
162.2 × 126.5 mm77 parts2LMIT2.0k
AVR/ArduinoDiscipline
coseyfannitutti
304.9 × 122.8 mm170 parts2LCC-BY-NC-4.01.0k
AVR/ArduinoMegadesk
gcormier
41.7 × 32.2 mm23 parts2LGPL-3.0818
AVR/ArduinoUsbGpib
xyphro
54 × 15 mm21 parts2LMIT683
AVR/ArduinoMysterium
347.7 × 146.6 mm206 parts2LGPL-3.0543
AVR/ArduinoREVIUNG61
gtips
285.5 × 95 mm142 parts2LMIT516
AVR/ArduinoLumberjack
peej
284.7 × 94.2 mm149 parts2LMIT402
AVR/ArduinoSU120 Yakitori Keyboard
e3w2q
98.8 × 98 mm133 parts2LMIT393
AVR/ArduinoHub16
joshajohnson
89 × 100 mm121 parts2LCERN-OHL-1.2387
AVR/ArduinoChirp v2.4
Miceuz
140.8 × 16 mm19 partsNo license367
AVR/ArduinoMouse
biomurph
50 × 90 mm47 parts2LMIT362
AVR/Arduino8bit computer
vascofazza
297.2 × 180.3 mm327 parts2LMIT314
AVR/ArduinoPheromone keyboard
luantty2
304 × 99 mm146 parts2LNo license286
AVR/ArduinoArisu
FateNozomi
339.1 × 118.7 mm156 parts2LMIT282
AVR/ArduinoI2c moist sensor
18 × 149 mm22 parts4LApache-2.0258
AVR/ArduinoM8SBC-486
maniekx86
150 × 150 mm123 parts4LNo license253
AVR/ArduinoOpenThereminV4
GaudiLabs
50.5 × 128.5 mm97 parts2LGPL-3.0238
AVR/ArduinoPlain60-c
evyd13
284.7 × 94.2 mm175 parts2LCC-BY-SA-4.0229
AVR/ArduinoRFBitBangSMT
profdc9
152 × 88 mm263 parts2LNo license221
AVR/ArduinoGoldfish
staticintlucas
17.8 × 33 mm26 parts2LNo license219
AVR/ArduinoLinHT
M17-Project
45.5 × 96 mm202 parts6LCC-BY-NC-4.0218
AVR/ArduinoBMEKv3
Bemeier
353.8 × 116.1 mm188 partsNo license211
AVR/ArduinoInfidel sensor
drspangle
50 × 20 mm16 partsCC0-1.0207
AVR/ArduinoSmu main 1
jaromir-sukuba
130 × 80 mm206 parts2LNo license188
AVR/ArduinoSplitFlapDriverATtiny1616V4.kicad
adamgmakes
30 × 60 mm25 parts2LNo license182
AVR/ArduinoTorn Keyboard - Left
EanNewton
140.8 × 115.7 mm68 parts2LMIT178
AVR/ArduinoPCB-reflow solder heat plate
DerSpatz
100 × 100 mm47 parts2LMIT177
AVR/Arduino65C02 Computer
dbuchwald
203.2 × 149.9 mm62 parts2LMIT176
AVR/ArduinoSuper Sixteen v1
matthewcieplak
111.3 × 106.4 mm141 parts2LNo license172
AVR/ArduinoEV Charger
fotherja
118 × 103.5 mm53 parts2LMIT166
AVR/Arduino1002 EPROM EMU NG 2.2d
Kris-Sekula
99.1 × 88.9 mm42 parts2LApache-2.0161
AVR/ArduinoMiniscope v4-Rigid-Flex
Aharoni-Lab
30 × 57.3 mm109 parts6LGPL-3.0157
AVR/ArduinoZ-probe on smd resistors-2512
IvDm
15.3 × 19.3 mm17 parts2LGPL-3.0150
AVR/ArduinoSnopf
snopf
14 × 17.3 mm16 parts2LGPL-2.0145
AVR/ArduinoLagom
mohoyt
305.6 × 121.8 mm167 parts2LCC-BY-NC-4.0143
AVR/ArduinoCHORD VCO
ijnekenamay
30 × 100 mm37 parts2LNo license142
Open source AVR/Arduino boards at a glance
The gallery holds 2292 open source AVR/Arduino boards from 1657 GitHub repositories; a typical one measures about 80 × 69 mm and carries around 42 components.
88% are two-layer designs, the rest use four layers or more, and 44% carry an open source license.
The most starred is Redox keyboard by mattdibi.
Parts most used on AVR/Arduino boards
What AVR/Arduino boards are built for
Open source AVR/Arduino boards: common questions
Where can I find open source AVR/Arduino boards?
This page lists 2292, each read from its KiCad files on GitHub: board size, layers, the full parts list and a render of the PCB, with links to the original repository.
What parts are most common on AVR/Arduino boards?
The Arduino_Nano_v3.x, ATmega328P-AU, ATmega32U4-AU, ATmega328P-PU and ATmega328P-A appear in the most repositories here.
How big is a typical AVR/Arduino board?
The median is 80 × 69 mm, and 88% are two-layer designs.
What is the most popular open source AVR/Arduino board?
By GitHub stars, Redox keyboard by mattdibi, with 1,985 stars.
Can I simulate one of these AVR/Arduino boards before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.