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/ArduinoComplete testboard
adsehgal
100 × 150 mm126 parts2LNo license0
AVR/ArduinoLil-Cheat
kiiings
298.5 × 76.2 mm125 parts2LNo license0
AVR/ArduinoShield offset
apmarshall3
83.2 × 78.1 mm125 parts4LNo license0
AVR/ArduinoElectronics projects
mirmisbahali
85 × 43.1 mm124 parts2LNo license0
AVR/ArduinoPrototype Senior Design A
Kenkneeshio
150 × 100 mm124 parts2LNo license0
AVR/ArduinoKeyboard
mintexists
263.9 × 107.3 mm122 parts2LNo license0
AVR/ArduinoNrsk right
0x0c
187 × 120.3 mm122 parts2LNo license0
AVR/ArduinoRaspberry Pi Compute Module 5 Drone Carrier
AMLing2
56.2 × 70.5 mm121 parts4LMIT0
AVR/ArduinoKeyboards
kyleterry
297.2 × 105.4 mm121 parts2LNo license0
AVR/ArduinoPanel
directionizer
199.5 × 80 mm120 parts2LGPL-3.00
AVR/ArduinoOctobot
Deivid-Negoita
124 × 23 mm120 parts4LMIT0
AVR/ArduinoUNO-TH Rev3e
lusmdl
68.6 × 53.3 mm120 parts2LMIT0
AVR/ArduinoOscino
cristianfurtuna
120 × 80 mm119 parts4LMIT0
AVR/ArduinoThe-SuperCap-Bike-Project
Fischer-Andrew
110.5 × 119.5 mm119 parts2LCC0-1.00
AVR/ArduinoUNO-TH Rev3e
Human-Computer-Integration-Lab
84.5 × 66.5 mm118 parts2LNo license0
AVR/ArduinoDataLogger
re-innovation
142 × 92 mm117 parts2LGPL-2.00
AVR/ArduinoSherie
flora495
278.3 × 81.9 mm117 parts2LNo license0
AVR/ArduinoSlice THMX
feastorg
100.1 × 144.9 mm117 parts4LGPL-3.00
AVR/ArduinoSlice LEPD
70 × 100 mm117 parts2LGPL-3.00
AVR/ArduinoAsymRightBackup
esouthren
250 × 126.1 mm117 parts2LGPL-3.00
AVR/ArduinoGlazerLab KStat
nfroehberg
139.7 × 41.9 mm116 parts2LNo license0
AVR/ArduinoAtinverter
bcarrillo1051
83.8 × 94.6 mm115 parts2LMIT0
AVR/ArduinoMykeeb
maxhbr
159.5 × 119.1 mm115 parts2LNo license0
AVR/ArduinoERGODASH-MOD-ENCH-OLED-QMK VIA
juarendra
150.6 × 127.4 mm115 parts2LNo license0
AVR/ArduinoPCB-PF-2026
Filiflaj
88 × 48 mm114 parts4LNo license0
AVR/Arduino40--Keyboard
BillyDiman
228.6 × 76.2 mm112 parts2LNo license0
AVR/ArduinoV2.1 board ecar isolated
Jonny999999
160 × 100 mm112 parts4LNo license0
AVR/ArduinoRTB C11
git4dcc
160.3 × 71.7 mm112 parts2LApache-2.00
AVR/ArduinoWhisker
HeyPCB
64.6 × 55.2 mm112 parts4LCERN-OHL-S-2.00
AVR/ArduinoUNO-TH Rev3e
NadjB
68.6 × 53.3 mm111 parts2LNo license0
AVR/ArduinoSchakelbord first
robbertvdzon
220.5 × 140.1 mm111 parts2LNo license0
AVR/ArduinoDreamstalker
orpaltech
79 × 85 mm111 parts2LNo license0
AVR/ArduinoPdb
0x007E
77.5 × 50.8 mm110 parts2LCC-BY-NC-4.00
AVR/ArduinoPlc
PappasFlow
129 × 137.2 mm110 parts2LNo license0
AVR/ArduinoDesligador
carloslcor
76 × 62 mm109 parts2LNo license0
AVR/ArduinoKurako 40
nathandot
226 × 76 mm108 parts2LNo license0
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