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/ArduinoBakeneko-60
MeltedIceCubes
284.7 × 94.2 mm154 parts2LNo license0
AVR/ArduinoWordclock
maelgui
221 × 221 mm153 parts2LNo license0
AVR/ArduinoDATALOGGER02
mlab-modules
101.1 × 60.5 mm153 parts2LGPL-3.00
AVR/ArduinoBakeneko-60
hsaito18
284.7 × 94.2 mm153 parts2LNo license0
AVR/ArduinoUSTSIPIN02
ust-modules
90.9 × 50.3 mm153 parts4LGPL-3.00
AVR/ArduinoLunar65
ItzZeNash
303.8 × 94.2 mm152 parts2LNo license0
AVR/ArduinoJAWS65
jaredlcs
303.8 × 94.2 mm152 parts2LNo license0
AVR/Arduino60 Keyboard
laxlucien
285.7 × 95.2 mm152 parts2LMIT0
AVR/ArduinoCustomKeeb2
Goblnn
309.6 × 100 mm150 parts2LNo license0
AVR/ArduinoSimple-Keyboard-Project
MRM1790
285 × 94.6 mm150 parts2LNo license0
AVR/Arduino3phaseDiverter
FredM67
133.7 × 120.8 mm150 parts2LCC-BY-SA-4.00
AVR/ArduinoSpot Welder Hardware
andrewvh4
263.7 × 182.9 mm150 parts2LNo license0
AVR/ArduinoP00C 96-Well Pipette visualizer
42CrMo4
122.6 × 97.8 mm149 parts2LNo license0
AVR/ArduinoCentral control
adarwoo
103 × 107 mm147 parts4LNo license0
AVR/ArduinoSteel form Dish washer
R-Mutura
185 × 95 mm147 parts4LNo license0
AVR/ArduinoCorne Cherry
IndianBoy42
275.5 × 105.6 mm146 parts2LNo license0
AVR/Arduino8086-computer
EldadHellerman
94 × 90 mm146 parts2LNo license0
AVR/ArduinoPeripheral board
Lintaroh
165 × 135 mm145 parts2LMIT0
AVR/ArduinoRakennus60
rakennus
285.5 × 95 mm144 parts2LNo license0
AVR/ArduinoAll band amp-April-2026
satspares
139.5 × 101 mm142 parts4LMIT0
AVR/ArduinoTest
cozykeys
243.1 × 148.9 mm142 parts2LNo license0
AVR/ArduinoAnatidae60
alexxpeng
285.5 × 105.3 mm138 parts2LNo license0
AVR/ArduinoSlash right
nikital
218 × 127 mm138 parts2LNo license0
AVR/ArduinoKiboOne
filipsalo
304.8 × 100 mm137 parts2LNo license0
AVR/ArduinoRfpirate
s3c
56.1 × 93 mm137 parts4LNo license0
AVR/ArduinoKeeb
M0HID
272.6 × 104.6 mm136 parts2LNo license0
AVR/ArduinoKneippometer
MartinFeichtinger
160 × 100 mm135 parts2LNo license0
AVR/ArduinoDigital synth
giacomogramaglia
165 × 90.1 mm135 parts2LNo license0
AVR/ArduinoMss cascade adv
IowaScaledEngineering
127 × 76.2 mm134 parts2LNo license0
AVR/ArduinoRGB-Redox
ee-nv-works
163.3 × 126.5 mm132 parts2LBSD-3-Clause0
AVR/ArduinoWorkboy
dmang-dev
152 × 106.1 mm131 parts2LMIT0
AVR/ArduinoNew system
MadsRudolph
202.2 × 131 mm131 parts2LNo license0
AVR/ArduinoOrnament2021
JamesMorrisELCT
149.5 × 149.7 mm131 parts2LNo license0
AVR/ArduinoATmega328 control Board
olexsu
124 × 89.4 mm129 parts4LMIT0
AVR/Arduino4040
lexerq
281.7 × 77 mm128 parts2LNo license0
AVR/ArduinoUNICON board
dodotronix
127 × 110 mm127 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