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/ArduinoEasyduino Atmega Nano
Hanqaqa
43.4 × 18 mm30 parts4LCERN-OHL-P-2.0746
AVR/ArduinoMCL8080
MicroCoreLabs
36.3 × 40.8 mm10 parts2LNo license532
AVR/ArduinoREVIUNG33
gtips
197 × 75.2 mm86 parts2LMIT516
AVR/ArduinoRnvm lisa
jaromir-sukuba
132 × 28 mm45 parts2LNo license459
AVR/ArduinoBm7161
jonnor
12 × 15.5 mm15 parts2LNo license315
AVR/ArduinoDisplay interface
vascofazza
96.5 × 55.3 mm7 parts2LMIT314
AVR/Arduino0.4
speeduino
100 × 100 mm141 parts2LNo license281
AVR/ArduinoBottom plate
ssbb
114 × 97.8 mm5 parts2LMIT197
AVR/ArduinoKicad cpu board
matthewcieplak
78.5 × 69 mm56 parts2LNo license172
AVR/Arduino1002 EPROM EMU NG 2.1
Kris-Sekula
99.1 × 88.9 mm38 parts2LApache-2.0161
AVR/ArduinoMiniscope v4-Ser-Pow
Aharoni-Lab
9 × 12.5 mm39 parts6LGPL-3.0157
AVR/ArduinoProgrammableRelayModule2Channel
numato
100 × 60 mm64 parts2LNo license143
AVR/ArduinoKeyboard
Skycode22
364.9 × 108.3 mm40 parts2LNo license132
AVR/ArduinoOcelot vA4
turboedge
80 × 99.8 mm123 parts2LGPL-2.0107
AVR/ArduinoHB-UNI-SEN-BATT
alexreinert
75 × 75 mm25 parts2LCC-BY-NC-4.0104
AVR/ArduinoKeyplus mini
ahtn
24 × 23 mm20 parts2LNo license96
AVR/ArduinoArduino Uno (Type-C)
sabogalc
68.6 × 53.3 mm51 parts2LWTFPL93
AVR/ArduinoBuzzer b
plusvic
45 × 41 mm3 parts2LCC0-1.093
AVR/ArduinoM8
thebiguno
50 × 50 mm154 parts2LNo license75
AVR/ArduinoMalenki nano i
MarkR42
19 × 32 mm42 parts4LGPL-3.072
AVR/ArduinoMidi
bread-modular
30.5 × 68.6 mm62 parts2LMIT65
AVR/ArduinoSensored BLDC Controller
rjwalters
70 × 90 mm42 parts4LMIT63
AVR/ArduinoPanel
0xCB-dev
144 × 144 mm53 parts2LCustom license60
AVR/ArduinoGrooveboard atmel au
ianklug
118.1 × 22.9 mm24 parts2LCC-BY-SA-4.058
AVR/ArduinoNt210
evyd13
77.2 × 123.1 mm71 parts2LCC-BY-SA-4.056
AVR/ArduinoGoldfish v2
Salicylic-acid3
17.4 × 32.6 mm26 parts2LMIT51
AVR/ArduinoZipper v.2
myriadrf
107 × 78 mm172 parts6LNo license50
AVR/ArduinoNfc sense ntag
unsurv
18.6 × 34.5 mm17 parts4LNo license49
AVR/ArduinoSpectrogram left
keebio
135.7 × 99.4 mm74 parts2LMIT45
AVR/ArduinoVCF
odeliy
28 × 110 mm72 parts2LNo license37
AVR/ArduinoEXECUTIVE ACTIONS (GROUPS/CONTROL) MODULE
CodapopKSP
20 × 20 mm60 parts2LGPL-3.037
AVR/ArduinoThe Count
rabidaudio
15.2 × 128.5 mm50 parts2LMIT31
AVR/ArduinoDenjuDivision Tei Minisumo Board
T3nk4I
85.5 × 32.5 mm28 parts2LGPL-2.027
AVR/ArduinoBeamspring usb
BASLQC
145.5 × 21.3 mm35 parts2LGPL-3.024
AVR/ArduinoMuscleboardv0
gskelly
33.2 × 36.6 mm54 partsNo license21
AVR/ArduinoDominoDisk-SMD
colinleroy
44.1 × 32.6 mm26 parts4LMIT20
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