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/ArduinoMainBoard BrooksP5Mini
tristanmelton
259.5 × 133 mm105 parts2LMIT3
AVR/ArduinoUno hat dev (1) (2)
Charmander542
155 × 58.1 mm99 parts2LNo license3
AVR/Arduino.kicad
hosier
116.8 × 81.3 mm98 parts2LMIT3
AVR/ArduinoB-Sides Badge
OklahomaOpenSourceHardware
75.5 × 78.8 mm70 parts2LNo license3
AVR/ArduinoHB-UNI-SEN-POOL 2023 05.1
chianti2000
117 × 95 mm69 parts2LNo license3
AVR/ArduinoENGR357 Project v1.1
pricna
74 × 72.1 mm66 parts2LMPL-2.03
AVR/ArduinoAtmega32u4 hub pcb 1 3
Accessible-AAC
71.9 × 58.4 mm65 parts2LNo license3
AVR/ArduinoDC DCBoard
uvmaero
185.4 × 68.6 mm65 parts2LCC-BY-SA-4.03
AVR/ArduinoBoard
derEchteJan
114.3 × 95.3 mm61 parts2LNo license3
AVR/ArduinoMain
LouiseLeciak
130 × 100 mm57 parts2LNo license3
AVR/ArduinoKeyboard controller
TM90
102.5 × 131.4 mm57 parts2LNo license3
AVR/Arduino328p design
thesunRider
76 × 88 mm51 parts2LMIT3
AVR/ArduinoTR v0.1 backup
razvysme
25.8 × 107.1 mm50 parts2LCC0-1.03
AVR/ArduinoMicArrayPro
dylanzodrow
183.4 × 183.4 mm49 parts2LNo license3
AVR/ArduinoSpineTime Controller Board
DaringCuteSeal
52 × 29 mm40 parts2LNo license3
AVR/ArduinoEuroClockMD SingleBoard
fablabnk
29 × 106 mm33 parts2LNo license3
AVR/ArduinoMAPone - Bare Bones Arduino
MakersAsylumIndia
70 × 30 mm33 parts2LNo license3
AVR/ArduinoData Logger
Shourya-x
50.8 × 40.6 mm25 parts2LNo license3
AVR/ArduinoJulkort
CASE-Association
49.2 × 95.9 mm20 parts2LGPL-3.03
AVR/ArduinoPcb proto
rapidalarm
67.3 × 44.5 mm18 parts2LNo license3
AVR/ArduinoHvpp big adapter
emard
159.4 × 79.4 mm16 partsNo license3
AVR/ArduinoSatelliteController
tokai-student-rocket-project
150 × 100 mm185 parts2LMIT2
AVR/ArduinoKeyboard-ISO-diod
Supermagnum
377 × 162.5 mm173 parts2LCC0-1.02
AVR/ArduinoUtracer11.unrouted
j-hoppe
132.3 × 214.1 mm128 parts4LBSD-3-Clause2
AVR/ArduinoMain board Teensy
MUNAKATA-EPC
120 × 120 mm110 parts2LNo license2
AVR/ArduinoAutomata Generator Minimal
Sirawit7205
128.3 × 71.8 mm103 parts2LNo license2
AVR/ArduinoArduinoController
frep
150 × 80 mm100 parts2LNo license2
AVR/ArduinoGoobylåda - Kretskort - BACKUP
DanielMartensson
100 × 100 mm99 parts2LMIT2
AVR/ArduinoGarden Irrigation Motherboard
vinthewrench
200 × 100 mm88 parts2LMIT2
AVR/ArduinoIndicator board 3V3 & 5V
callmestiles
100 × 73.3 mm83 parts2LNo license2
AVR/ArduinoPolaris3.1
porbital
95 × 99 mm69 parts2LNo license2
AVR/ArduinoSlim
McbeEringi
44 × 44 mm64 parts2LMIT2
AVR/ArduinoPassword
PurkkaKoodari
100 × 100 mm58 parts2LMIT2
AVR/ArduinoBluetooth KISS TNC
hitov
56.6 × 31 mm55 parts2LNo license2
AVR/ArduinoRenewableRegulatorPCB 2017
re-innovation
101.4 × 90.8 mm53 partsMIT2
AVR/ArduinoPseudo walkie talkie
ApophisXIV
70.8 × 35.5 mm51 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