17 open source boards using the ATmega328-PU
Real designs built with the ATmega328-PU, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
AVR/ArduinoTorn Keyboard - Left
EanNewton
140.8 × 115.7 mm68 parts2LMIT178
AVR/ArduinoGingham
yiancar
285.8 × 123.8 mm160 parts2LCC-BY-NC-4.085
AVR/ArduinoRosaline ortho
peej
285.4 × 94.9 mm148 parts2LMIT52
AVR/ArduinoGingham-USBC
285.8 × 123.8 mm162 parts2LCC-BY-SA-4.043
AVR/ArduinoRti
cceh
100 × 80 mm54 parts2LNo license15
AVR/ArduinoBeat707
FrankBuss
276.9 × 142.2 mm263 parts2LNo license11
AVR/ArduinoFranzBoy
Franzininho
50 × 100 mm43 parts2LNo license9
AVR/ArduinoECG-Simulator
JohanSmets
67.3 × 48.3 mm41 parts2LGPL-3.03
AVR/ArduinoAutomata Generator Standard
Sirawit7205
246.4 × 127 mm121 parts2LNo license2
AVR/ArduinoUZ80
adzierzanowski
231.4 × 159.9 mm112 parts2LNo license2
AVR/ArduinoFram prototype
uw-madison-chem-shops
91.4 × 66 mm25 parts2LCERN-OHL-P-2.01
AVR/ArduinoLuciebox v5
hyperlode
78 × 90.5 mm62 parts2LNo license0
AVR/ArduinoJ2o Board
qbancoffee
82.6 × 52.5 mm16 parts2LLGPL-3.0236
AVR/ArduinoRFBitBanger
profdc9
152 × 88 mm226 parts2LNo license221
AVR/ArduinoRosaline
285.4 × 94.9 mm137 parts2LMIT52
AVR/ArduinoBrain board
100 × 100 mm70 parts2LNo license11
AVR/ArduinoALaMode v3
wyolum
85.1 × 55.9 mm76 partsNo license1
The ATmega328-PU in open source designs
The gallery holds 17 open source boards using the ATmega328-PU from 15 GitHub repositories; a typical one measures about 140.8 × 94.9 mm and carries around 76 components.
100% are two-layer designs, the rest use four layers or more, and 41% carry an open source license.
The most starred is J2o Board by qbancoffee.
Parts used alongside the ATmega328-PU
Microcontrollers on boards using the ATmega328-PU
What boards using the ATmega328-PU are built for
ATmega328-PU: common questions
Where can I find a ATmega328-PU reference design?
Each of the 17 boards on this page is a real design using the ATmega328-PU. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
Which microcontrollers do boards using the ATmega328-PU use?
Most are built on AVR/Arduino (17).
How big is a typical board using the ATmega328-PU?
The median is 140.8 × 94.9 mm, and 100% are two-layer designs.
What is the most popular open source board using the ATmega328-PU?
By GitHub stars, J2o Board by qbancoffee, with 236 stars.
Can I simulate one of these boards using the ATmega328-PU 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.