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/ArduinoHall effect sensor easyC
SolderedElectronics
22 × 22 mm12 parts2LTAPR-OHL-1.01
AVR/ArduinoDIY-CNC-Mill
VedantGithub123
104.1 × 132.1 mm11 parts2LMIT1
AVR/ArduinoTach attack
pulcher
34 × 99.5 mm11 parts2LNo license1
AVR/ArduinoRolltech
kajgm
100 × 49 mm11 parts2LNo license1
AVR/ArduinoAttiny85 I2C RGB LED v2.1
rsedak
20 × 37 mm11 parts2LCustom license1
AVR/ArduinoAttiny48
joshnuss
20.3 × 19.3 mm10 parts2LNo license1
AVR/ArduinoArduino-VGA-Games
lmtreser
69.6 × 54.4 mm10 parts2LMIT1
AVR/ArduinoRobotic manipulator
mbed92
27.4 × 56.6 mm10 parts2LMIT1
AVR/ArduinoFan controller
GewoonMaarten
50 × 40 mm10 parts2LMIT1
AVR/ArduinoAvr breadboard
alejandrogallo
33.2 × 47.9 mm10 parts2LNo license1
AVR/ArduinoEntropy32-Recorder
captainchapster
36 × 47 mm10 parts2LMIT1
AVR/ArduinoSlice PRTO SMT S2L
feastorg
70 × 100 mm10 parts2LGPL-3.01
AVR/ArduinoPS2-Tandy-Keyboard-Adapter
rkrenicki
50 × 19 mm9 parts2LNo license1
AVR/ArduinoKicad ambient led system
jay-waghmare
60 × 60 mm9 parts2LMIT1
AVR/ArduinoKoi mini mp3-player
fajr-lilypad
63.3 × 128.6 mm9 parts2LNo license1
AVR/ArduinoMorse-Code-LED-Blinker
leandroebner
40 × 40 mm8 parts2LCERN-OHL-S-2.01
AVR/ArduinoOpenkey kabuki cr
jwestfall69
18.3 × 51.4 mm8 parts2LUnlicense1
AVR/ArduinoPCB Plaque Basse
BenCestMoiQuoi
94 × 94 mm7 parts2LNo license1
AVR/ArduinoAttiny programmer
barafael
35.4 × 55.6 mm7 parts2LNo license1
AVR/ArduinoArduino
bmo00
66.1 × 51.9 mm7 parts2LGPL-3.01
AVR/ArduinoEaf
jrhuerta
42.5 × 43.5 mm6 parts2LNo license1
AVR/ArduinoHardware qrng
elegantmonark
89 × 52 mm6 parts2LApache-2.01
AVR/ArduinoPcb mixer
anqueue
113 × 76 mm6 parts2LNo license1
AVR/ArduinoRC-Car
FABallemand
84 × 125.8 mm5 parts2LNo license1- schematic only · 99 partsAVR/Arduino
Bill-Of-Materials-Tools
Jesse-Millwood
99 partsNo license1 - schematic only · 67 partsAVR/Arduino
Tiny alarm
mufeedcm
67 partsGPL-3.01 - schematic only · 63 partsAVR/Arduino
Patchworks
Broosky
63 partsNo license1 - schematic only · 60 partsAVR/Arduino
Kicad
harry123180
60 partsNo license1 - schematic only · 58 partsAVR/Arduino
NetToBOM
Len42
58 partsMIT1 - schematic only · 46 partsAVR/Arduino
Mariokartrev 2 team 4
rjdurlin42
46 partsNo license1 - schematic only · 37 partsAVR/Arduino
Nano-3x3-LED-Cube
UnsignedArduino
37 partsNo license1 - schematic only · 28 partsAVR/Arduino
Cartesian Robot 3D Model
Mohammed-Shehsin
28 partsNo license1 - schematic only · 27 partsAVR/Arduino
RetroPad-Assignment
prashantjnv172-alt
27 partsNo license1 - schematic only · 24 partsAVR/Arduino
Perfboard studio
medinstech
24 partsApache-2.01 - schematic only · 23 partsAVR/Arduino
Breezy
23 partsNo license1 - schematic only · 16 partsAVR/Arduino
RotorRig-V1.0
GrzegorzG7
16 partsCC-BY-NC-4.01
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