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/ArduinoRotationEncoder
nunosousa
50 × 25 mm47 parts4LMIT0
AVR/ArduinoAmmeter
Tert2
25 × 15 mm45 parts4LNo license0
AVR/ArduinoProgram counter
ostertag
100 × 50 mm41 parts2LGPL-2.00
AVR/ArduinoConveyor Belt Main Board
Paa-Kwasi-04
94.8 × 117.5 mm40 parts2LNo license0
AVR/ArduinoSound
eshazen
177.8 × 114.3 mm39 parts2LNo license0
AVR/ArduinoCell
M-o-a-T
30 × 53.9 mm36 parts2LNo license0
AVR/ArduinoSucsess maybeeee
ANToNyS21
246 × 170 mm35 parts2LNo license0
AVR/ArduinoSplitflap controller board
orgTestCodacy11KRepos110MB
96 × 48 mm33 parts2LApache-2.00
AVR/ArduinoSplitflap controller board
nintando64
96 × 48 mm33 parts2LApache-2.00
AVR/ArduinoTank side Control Unit
Amaza-Ronald
59.3 × 58 mm32 parts2LNo license0
AVR/ArduinoParticle
ProgrammableMatter
42.5 × 43.2 mm32 parts2LNo license0
AVR/ArduinoArduino nano halfbridge dc driver
gkeiel
82.8 × 49.3 mm32 parts2LMIT0
AVR/ArduinoXDuinoRailSwitch
chatelao
59.1 × 50.6 mm31 parts2LAGPL-3.00
AVR/ArduinoModule tester board
MST-Robotics
69.1 × 53.3 mm29 parts2LNo license0
AVR/ArduinoP2
larsimmisch
86.4 × 45.7 mm28 parts2LNo license0
AVR/ArduinoNSSL EFM Charge Amplifier
LeemanGeophysicalLLC
44.5 × 31.8 mm27 parts4LNo license0
AVR/ArduinoSignal-Bord
martinfantini
133 × 91 mm26 parts2LNo license0
AVR/ArduinoRemote
nolanconrad
60.5 × 50 mm25 parts2LNo license0
AVR/ArduinoDigi pot
mar0x
30 × 30 mm25 parts4LNo license0
AVR/ArduinoHumidity board
nEDM-TUM
100 × 20 mm24 parts2LNo license0
AVR/ArduinoCosmonode ext05
exostic
38.1 × 34.3 mm22 parts2LNo license0
AVR/ArduinoIDM-RoomSensor-Classic-B-ES1
Xerolux
145 × 78 mm22 parts2LCERN-OHL-S-2.00
AVR/ArduinoMCU2
Kenkneeshio
49.4 × 37.3 mm20 parts2LNo license0
AVR/ArduinoRight
Scaniox
50.6 × 52.3 mm18 parts2LNo license0
AVR/ArduinoPannel
atuleu
46 × 69.5 mm17 parts2LCERN-OHL-S-2.00
AVR/ArduinoBase 2layer nopour
Hemlock-white
100 × 98.9 mm16 parts2LNo license0
AVR/ArduinoMisc Control Card
brianz123
100 × 62.5 mm14 parts2LNo license0
AVR/ArduinoAtmega remote
ArgonautGit
32.5 × 24 mm13 parts2LNo license0
AVR/ArduinoArduino due shield
chpaxson
101.6 × 53.3 mm13 parts2LNo license0
AVR/ArduinoTRANSMITTER SMD
vul-os
39.4 × 54.3 mm12 parts2LMIT0
AVR/ArduinoATMEGA328 MINIMO
lmtreser
47.6 × 59.1 mm9 parts2LNo license0
AVR/ArduinoProgrammer
JAndersM
40 × 65 mm9 parts2LGPL-3.00
AVR/ArduinoIR-endstop-0.4.1
sl1pkn07
20.5 × 8 mm8 parts2LNo license0
AVR/ArduinoLine Follower Robot 1782236037926
chestnutensign45875
200 × 130 mm5 parts2LNo license0
AVR/ArduinoMPL3115A2 barometer
Olin-Rocketry
9.4 × 9.1 mm4 parts2LNo license0
AVR/ArduinoCircuit GPS
EthanSousaProjects
41.2 × 50.3 mm3 parts2LGPL-3.00
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