59 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/ArduinoInfidel sensor
drspangle
50 × 20 mm16 partsCC0-1.0207
AVR/ArduinoSplitFlapDriverATtiny1616V4.kicad
adamgmakes
30 × 60 mm25 parts2LNo license182
AVR/ArduinoMiniscope v4-Rigid-Flex
Aharoni-Lab
30 × 57.3 mm109 parts6LGPL-3.0157
AVR/ArduinoScout
oskitone
145.3 × 44.5 mm38 parts2LCustom license114
AVR/ArduinoOpenTKL
ojthetiny
344 × 124 mm175 parts2LGPL-3.0102
AVR/ArduinoTR-808-Clone
minisystem
300 × 105 mm1058 parts2LNo license67
AVR/ArduinoQron0b
qewer33
35 × 35 mm29 parts2LGPL-3.062
AVR/ArduinoAdbuino
akuker
30.5 × 63 mm43 parts2LGPL-2.060
AVR/ArduinoArduino NMR 5.4
SoukeyCircuits
90 × 79 mm126 parts4LGPL-3.052
AVR/ArduinoNanoGris
Quinienl
68.5 × 108 mm108 parts2LGPL-3.041
AVR/ArduinoBrushless-Motor-Biz-Card
ageppert
88.9 × 50.8 mm70 parts2LMIT37
AVR/ArduinoWii-BVM-Card
Shank-Mods
105 × 160 mm106 parts2LNo license26
AVR/ArduinoBatterymeter
hb020
106.1 × 29.2 mm143 parts4LNo license19
AVR/ArduinoMSAP-2 rev.A
mehrantsi
240 × 1056 mm658 parts2LMIT13
AVR/ArduinoBakeneko40
HorseyMask
266.7 × 76.2 mm115 parts2LMIT6
AVR/ArduinoController board
andia89
69 × 54 mm73 parts2LNo license6
AVR/ArduinoKOTH V2
Salted-Peanuts
100 × 100 mm41 parts4LMIT4
AVR/ArduinoMiniscope v4-PCB-fab assembly 2
35.5 × 45 mm62 parts6LGPL-3.0157
AVR/ArduinoBemini atmel au
ianklug
199 × 65 mm43 parts2LCC-BY-SA-4.055
AVR/ArduinoArduino NMR 5.2
100 × 75 mm76 parts4LGPL-3.052
AVR/ArduinoMK7 Gripper
PlumPot55
129.5 × 58.5 mm37 parts2LNo license15
AVR/ArduinoMSAP-2 rev.A SMD
178 × 711 mm658 parts2LMIT13
AVR/ArduinoNerf timer
75.9 × 93.5 mm30 parts4LMIT4
AVR/ArduinoMiniscope v4-PCB-fab assembly
36 × 18.5 mm41 parts6LGPL-3.0157
AVR/ArduinoBemini atmel mu
200 × 65 mm43 parts2LCC-BY-SA-4.055
AVR/ArduinoSatNOGS Rotator Controller v2.4
AFS-pt
100 × 80 mm65 parts2LNo license15
AVR/ArduinoMSAP-2-production
300 × 248.8 mm520 parts6LMIT13
AVR/ArduinoMotherboard
ParadigmHyperloop
196.4 × 195.1 mm262 parts2LCustom license11
AVR/ArduinoATtiny 816/1616 Minibadge Devboard
Pips801
19 × 16.8 mm12 parts2LNo license7
AVR/ArduinoMiniscope v4-Ser-Pow
9 × 12.5 mm39 parts6LGPL-3.0157
AVR/ArduinoMidi
bread-modular
30.5 × 68.6 mm62 parts2LMIT65
AVR/ArduinoSensored BLDC Controller
rjwalters
70 × 90 mm42 parts4LMIT63
AVR/ArduinoZipper v.2
myriadrf
107 × 78 mm172 parts6LNo license50
AVR/ArduinoSwitchbox3
AgOpenGPS-Official
110 × 54 mm24 parts2LGPL-3.020
AVR/ArduinoMSAP-2-production routed
300 × 248.8 mm520 parts6LMIT13
AVR/ArduinoSSI2130 Oscillator
powsplatboom
84 × 100 mm185 parts4LNo license11
Open source AVR/Arduino boards at a glance
The gallery holds 59 open source AVR/Arduino boards from 30 GitHub repositories; a typical one measures about 80 × 68.6 mm and carries around 52 components.
57% are two-layer designs, the rest use four layers or more, and 76% carry an open source license.
The most starred is Infidel sensor by drspangle.
Parts most used on AVR/Arduino boards
What AVR/Arduino boards are built for
Open source AVR/Arduino boards: common questions
Where can I find open source AVR/Arduino boards?
This page lists 59, each read from its KiCad files on GitHub: board size, layers, the full parts list and a render of the PCB, with links to the original repository.
What parts are most common on AVR/Arduino boards?
The ATmega328P-PU, 74HC595, ARDUINO_NANO_ESP32, Arduino_Nano_v3.x and ATMEGA328P-AU appear in the most repositories here.
How big is a typical AVR/Arduino board?
The median is 80 × 68.6 mm, and 57% are two-layer designs.
What is the most popular open source AVR/Arduino board?
By GitHub stars, Infidel sensor by drspangle, with 207 stars.
Can I simulate one of these AVR/Arduino boards before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.