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/ArduinoTheboulevard
joedinkle
257.2 × 85.7 mm154 parts2LGPL-3.024
AVR/ArduinoEuclid36
sadekbaroudi
248.2 × 127 mm130 parts2LNo license24
AVR/ArduinoLysergic25
Gtrx0
99.1 × 99.1 mm108 parts2LCERN-OHL-1.224
AVR/ArduinoSoftware-Defined-Radio
Dizzerin
81.3 × 33.7 mm62 parts2LNo license24
AVR/ArduinoAmkey usb
BASLQC
123 × 82.3 mm39 parts2LGPL-3.024
AVR/ArduinoCart
digilogistist
100 × 61.5 mm38 parts2LCC0-1.024
AVR/ArduinoUnison
jpskenn
285 × 95.1 mm281 parts2LMIT23
AVR/ArduinoVm101-inout
mirdej
130 × 105 mm233 parts4LNo license23
AVR/ArduinoUrsa minor keyboard
markstory
298.8 × 122.1 mm134 parts2LCC-BY-NC-4.023
AVR/ArduinoOpenkilo
yorkrobotlab
36 × 36 mm81 parts2LCC-BY-NC-4.023
AVR/ArduinoDiyBMSv4Leaf
stuartpittaway
218 × 30 mm76 parts2LCC-BY-NC-4.023
AVR/ArduinoRda5807m receiver
dilshan
112.6 × 85.4 mm61 parts2LMIT23
AVR/ArduinoPicon one hw
fm4dd
117.8 × 168 mm59 parts2LCERN-OHL-1.223
AVR/ArduinoBlinkySWR
bubnikv
34.5 × 26.5 mm45 parts2LGPL-2.023
AVR/ArduinoPeripheral board
trollectronics
165 × 100 mm248 parts2LNo license22
AVR/ArduinoThe manta75
mymakercorner
312.3 × 138.8 mm197 parts2LCC-BY-4.022
AVR/ArduinoXfm2-ui board
bendecaf
363.7 × 103.4 mm91 parts2LGPL-3.022
AVR/ArduinoNo fi delay
Krakenpine
99.5 × 199.5 mm80 parts2LNo license22
AVR/ArduinoArduino MEGA 2560-Rev3
bobc
101.6 × 53.3 mm69 partsNo license22
AVR/ArduinoC64 Joystick Adapter
tebl
81.3 × 40.6 mm18 parts2LCERN-OHL-1.222
AVR/ArduinoMikeneko-65
takishim
303.8 × 94.2 mm152 parts2LMIT21
AVR/ArduinoDivergence Meter Control Board
q61org
89 × 47 mm102 parts2LNo license21
AVR/ArduinoGreaseweazle F1 Plus 3.5 Rev 1.1
solarmon
170.2 × 100 mm90 parts2LNo license21
AVR/Arduino4x6
regack
75.4 × 113.7 mm79 partsNo license21
AVR/ArduinoRetroPie Power Board v1a
baldengineer
122 × 112 mm59 parts2LNo license21
AVR/ArduinoHB-LC-Dim6PWM-CV
stan23
139 × 56.3 mm57 parts2LCC-BY-NC-4.021
AVR/ArduinoLeonardo
eltorio
68.6 × 53.3 mm56 parts2LCC-BY-SA-4.021
AVR/ArduinoPcb
trebb
17.9 × 3.6 mm49 parts2LMIT21
AVR/ArduinoNeopad
ivndbt
99.2 × 88.3 mm19 parts2LGPL-2.021
AVR/ArduinoAVLO44
johnplanow
356.5 × 105.4 mm112 parts2LMIT20
AVR/ArduinoRight
csun
210.9 × 125.7 mm89 parts2LCustom license20
AVR/ArduinoZmk uno
zmkfirmware
68.6 × 53.3 mm74 parts2LCERN-OHL-W-2.020
AVR/ArduinoGameHand
str-dst
143.7 × 111.3 mm71 parts2LCC-BY-NC-4.020
AVR/ArduinoLAMEBOY
davedarko
45.7 × 67.3 mm70 parts2LNo license20
AVR/ArduinoI2c test terminal
96.9 × 110.7 mm65 parts2LMIT20
AVR/ArduinoRigidus.ru
rigidus
243.3 × 134.9 mm57 parts2LAGPL-3.020
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