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/ArduinoArduino unoPB
tomaskovacik
70.2 × 53.3 mm63 parts2LCustom license27
AVR/ArduinoC64 Arcade
tebl
99.7 × 55.2 mm49 parts2LCERN-OHL-1.227
AVR/ArduinoDenjuDivision Tei Minisumo Board
T3nk4I
85.5 × 32.5 mm28 parts2LGPL-2.027
AVR/ArduinoRC1 8K ExRAM
99.1 × 83.8 mm36 parts2LCERN-OHL-1.225
AVR/ArduinoATMega328-usb counter
swharden
60.6 × 40 mm34 parts2LMIT25
AVR/ArduinoModel f usb
BASLQC
140 × 28.5 mm38 parts2LGPL-3.024
AVR/ArduinoT6963-mega adapter
bendecaf
101.6 × 53.3 mm17 parts2LGPL-3.022
AVR/ArduinoGreaseweazle F1 Plus Gotek Rev 1.1
solarmon
114.1 × 94.7 mm76 parts2LNo license21
AVR/ArduinoHB-UNI-Sen-CAP-MOIST
stan23
32 × 58 mm38 parts2LCC-BY-NC-4.021
AVR/ArduinoMini-SMD-Angled
colinleroy
65.1 × 97 mm28 parts2LMIT20
AVR/ArduinoDaNumPad - Glow
TweetyDaBird
100 × 95.3 mm81 parts2LCustom license19
AVR/ArduinoPre Ignition
OpenLogicEFI
100 × 100 mm136 partsNo license18
AVR/ArduinoCommons Board
Bad-Dog-Designs
229 × 96 mm95 parts2LNo license18
AVR/ArduinoLights back
telec16
50 × 174 mm99 parts2LNo license16
AVR/ArduinoAtmega2560-baseboard
AravinthPanch
55.8 × 39.8 mm18 parts2LApache-2.016
AVR/ArduinoSatNOGS Rotator Controller v2.4
AFS-pt
100 × 80 mm65 parts2LNo license15
AVR/ArduinoSensing controller1
olin-electric-motorsports
99 × 99 mm188 parts4LNo license14
AVR/ArduinoDebugger
DutchMaker
104.1 × 104.1 mm7 parts2LNo license14
AVR/ArduinoMSAP-2-production
mehrantsi
300 × 248.8 mm520 parts6LMIT13
AVR/ArduinoFRReceiver8
shaise
22 × 23 mm25 parts2LGPL-3.013
AVR/ArduinoShieldArduino Semaforo
tidus747
68.6 × 53.3 mm19 parts2LGPL-3.012
AVR/ArduinoMask
aspro648
68.6 × 53.3 mm6 parts2LNo license12
AVR/ArduinoP300 Display IF
svenjust
64.8 × 50.8 mm3 parts2LGPL-3.012
AVR/ArduinoMotherboard
ParadigmHyperloop
196.4 × 195.1 mm262 parts2LCustom license11
AVR/ArduinoBrain board
FrankBuss
100 × 100 mm70 parts2LNo license11
AVR/ArduinoMidi laser
usr-ein
80 × 60 mm22 parts2LGPL-3.010
AVR/ArduinoSYZYGY LVDS 10.1" LCD Pod
gregdavill
45 × 35 mm44 parts4LNo license9
AVR/Arduino3DotDash
aydenvis
114.3 × 156 mm41 parts2LNo license9
AVR/ArduinoQX10 Titan QXPC Memory Board
brijohn
254 × 63.5 mm40 parts2LNo license9
AVR/ArduinoBartender arduino hat
dburnsii
21.5 × 19 mm4 parts2LGPL-2.09
AVR/ArduinoOpenHardwareExG Shield Test Board all panelled
OpenElectronicsLab
147.3 × 81.3 mm124 parts4LCERN-OHL-1.28
AVR/ArduinoSplit mini right
tamago324
94.8 × 81.9 mm37 parts2LNo license8
AVR/ArduinoTIMPS2Key
Board-Folk
90.6 × 32.2 mm30 parts2LNo license8
AVR/ArduinoLED-shield
RepRapLtd
68.6 × 53.3 mm28 parts2LGPL-3.08
AVR/ArduinoM.2 Arduino Module Board
ItsNotDaan
53.6 × 68.8 mm19 parts2LCERN-OHL-P-2.08
AVR/Arduino6xUSB PowMet hub
aleksejm
201.4 × 150.7 mm97 parts2LNo license7
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