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/ArduinoTinypulse
jonnor
14 × 12.5 mm12 parts2LNo license315
AVR/ArduinoV0.4.4b
speeduino
100 × 100 mm138 parts2LNo license281
AVR/ArduinoPortableTerminal
profdc9
79 × 75 mm76 parts2LNo license221
AVR/ArduinoKicad cpu board smt
matthewcieplak
78.5 × 69 mm56 parts2LNo license172
AVR/Arduino1002 EPROM EMU NG 2.2
Kris-Sekula
99.1 × 88.9 mm37 parts2LApache-2.0161
AVR/ArduinoMiniscope v4-PYTHON480
Aharoni-Lab
10.5 × 9 mm32 parts6LGPL-3.0157
AVR/ArduinoDefcoNFC Hardware Badge
monero-project
70 × 100 mm31 parts2LCERN-OHL-1.2115
AVR/ArduinoNO2C
turboedge
99.4 × 53.7 mm78 parts2LGPL-2.0107
AVR/ArduinoMu board
ahtn
23.1 × 33 mm20 parts2LNo license96
AVR/ArduinoArduino Uno SMD (Type-C)
sabogalc
68.6 × 53.3 mm51 parts2LWTFPL93
AVR/ArduinoLine follower
thebiguno
48.3 × 48.3 mm38 parts2LNo license75
AVR/ArduinoMalenki-1616
MarkR42
19 × 24.1 mm28 parts2LGPL-3.072
AVR/Arduino68k-SBC Supervisor Shield
transistorfet
89.9 × 53.3 mm6 parts2LGPL-3.069
AVR/ArduinoT41-main board-V012
DRWJSCHMIDT
100 × 100 mm95 parts4LNo license64
AVR/ArduinoSensored BLDC Controller
rjwalters
70 × 90 mm42 parts4LMIT63
AVR/ArduinoGrooveboard atmel mu
ianklug
118.1 × 22.9 mm24 parts2LCC-BY-SA-4.058
AVR/ArduinoLineinterrupter
74.4 × 99.3 mm85 parts2LNo license56
AVR/ArduinoNt-650
evyd13
81.1 × 40 mm14 parts2LCC-BY-SA-4.056
AVR/ArduinoNfc sense ntag panel
unsurv
121 × 87.9 mm17 parts4LNo license49
AVR/ArduinoSk730-cv sequencer
mirdej
101 × 107 mm130 parts2LNo license47
AVR/ArduinoEVA MODULE
CodapopKSP
13 × 14 mm57 parts2LGPL-3.037
AVR/ArduinoAfterglow 1.1
bitfieldlabs
193.5 × 80 mm78 parts2LNo license32
AVR/ArduinoArduino nano324
tomaskovacik
24.4 × 64.5 mm43 parts2LCustom license27
AVR/ArduinoGreaseweazle F1 Plus Gotek
solarmon
114.1 × 94.7 mm71 parts2LNo license21
AVR/ArduinoHM-LC-Bl1-FM-DC
stan23
59.7 × 27.9 mm34 parts2LCC-BY-NC-4.021
AVR/ArduinoDominoDisk-SMD-Angled
colinleroy
45 × 35.2 mm26 parts4LMIT20
AVR/ArduinoSW2
AgOpenGPS-Official
89 × 52 mm10 parts2LGPL-3.020
AVR/ArduinoMicrohope
expeyes
70 × 40 mm28 parts2LNo license18
AVR/Arduino384 well adapter board for Arduino mega
pierrebaillargeon
121.5 × 83 mm27 parts2LGPL-3.017
AVR/ArduinoPCMCIA-Card
NaokiS28
100.5 × 47 mm29 parts2LNo license16
AVR/ArduinoControl-Board
kholia
51.7 × 41.3 mm3 parts2LNo license15
AVR/ArduinoSynmidi Main
Bad-Dog-Designs
40 × 218 mm79 parts2LGPL-2.014
AVR/ArduinoPre connector model normalization v1
mehrantsi
300 × 248.8 mm520 parts6LMIT13
AVR/ArduinoSaomr
davedarko
40 × 39.8 mm13 parts2LNo license11
AVR/ArduinoUSB-C PD Sniffer for Logic Analyzer
mschwingen
23 × 26 mm17 parts2LNo license10
AVR/ArduinoG800Interface
hwreverse
46 × 39 mm28 parts2LBSD-3-Clause7
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