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/ArduinoKamaji
iley
100 × 100 mm63 parts2LMIT4
AVR/ArduinoYaafr
atoomnetmarc
233.7 × 81.3 mm56 parts2LApache-2.04
AVR/ArduinoLumiTimeV2
techn0man1ac
35 × 35 mm53 parts2LMIT4
AVR/ArduinoWs 3.0
boanjo
72.7 × 114 mm53 parts2LNo license4
AVR/ArduinoRaspberryPi UPS HAT
gvoigtlaender
65 × 56 mm52 parts2LGPL-3.04
AVR/ArduinoArduinoJimStim
pggood
97.1 × 74.9 mm51 parts2LNo license4
AVR/ArduinoVGA SRAM Shield
levvayner
97.8 × 53.7 mm51 parts4LNo license4
AVR/ArduinoOMSDR
HB9UF
50 × 50 mm50 parts2LGPL-3.04
AVR/ArduinoAttiny prototype board
ma-ha
160 × 100 mm50 parts2LMIT4
AVR/ArduinoGlyph
MalphasWats
85.3 × 35.3 mm49 parts2LNo license4
AVR/ArduinoValve control
GNHua
73.7 × 55.9 mm48 parts2LMIT4
AVR/ArduinoMcu
skiz
68.8 × 53.3 mm48 parts2LNo license4
AVR/ArduinoVarian turbo controller
0xDBFB7
94 × 53.5 mm47 parts2LMIT4
AVR/Arduino87-88-Fiero-Splice-In-Headlight-Controller
gekko3622
170 × 110 mm46 parts2LCC-BY-NC-4.04
AVR/ArduinoUSB-PiDU
PhirePhly
71.5 × 56 mm45 parts2LMIT4
AVR/ArduinoAtari-SIO2SD-Igi-Version
RichardRozehnal
80 × 60 mm44 parts2LGPL-3.04
AVR/ArduinoTuneShroom
ollyoid
89.4 × 96.4 mm42 parts2LNo license4
AVR/ArduinoPcb tile game tile ooo
bytesizedengineering
69.3 × 60 mm42 parts2LGPL-3.04
AVR/ArduinoSignal.echo
coderarjob
73.7 × 54.4 mm42 parts2LGPL-3.04
AVR/ArduinoKOTH V2
Salted-Peanuts
100 × 100 mm41 parts4LMIT4
AVR/ArduinoArduino-RF-Pro-Mini
etimou
21.6 × 48.3 mm39 parts2LNo license4
AVR/ArduinoK3ng w0odj keyer
kawfey
100 × 92 mm38 parts2LNo license4
AVR/ArduinoPCB avr dx unbricker
k-takata
72 × 47.5 mm36 parts2LNo license4
AVR/ArduinoIO watch
zyyan20h
35 × 34.7 mm34 parts2LNo license4
AVR/ArduinoTapecart sd vertical
djtersteegc
45.4 × 50 mm33 parts2LMIT4
AVR/ArduinoLoraWAN-Stick
lostangles
124.2 × 22.9 mm33 parts2LNo license4
AVR/Arduino6500-1-brain dumper
schlae
76.2 × 76.2 mm30 parts2LNo license4
AVR/ArduinoPOSpad
str-dst
37.1 × 40.9 mm26 parts2LCC-BY-NC-4.04
AVR/ArduinoBinaeruhr
timocramer
38 × 36.1 mm26 parts2LNo license4
AVR/ArduinoSpacecraft ATmega328 MOSFET
danielwilczak101
38.6 × 31 mm26 parts2LNo license4
AVR/ArduinoProgress 4 Final
AhmadHaniF1145
102.1 × 53.8 mm25 parts2LNo license4
AVR/ArduinoFC660C-Alt-Controller
YCF
98.3 × 35 mm23 parts2LNo license4
AVR/ArduinoMfk5
niw
57.2 × 57.2 mm22 parts2LMIT4
AVR/ArduinoC128-link232
ytmytm
86.4 × 69.9 mm22 parts2LMIT4
AVR/ArduinoChristmas tree
IamPhytan
56.1 × 89.5 mm17 parts2LCERN-OHL-P-2.04
AVR/ArduinoLearning
serenebliss0
171 × 90.5 mm14 parts4LMIT4
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