6 open source boards using the ATMEGA328P-PU

Real designs built with the ATMEGA328P-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.

The ATMEGA328P-PU in open source designs

The gallery holds 6 open source boards using the ATMEGA328P-PU from 6 GitHub repositories; a typical one measures about 135.6 × 100.3 mm and carries around 106 components.

83% are two-layer designs, the rest use four layers or more, and 33% carry an open source license.

The most starred is Lumberjack by peej.

Parts used alongside the ATMEGA328P-PU

Microcontrollers on boards using the ATMEGA328P-PU

What boards using the ATMEGA328P-PU are built for

ATMEGA328P-PU: common questions

Where can I find a ATMEGA328P-PU reference design?

Each of the 6 boards on this page is a real design using the ATMEGA328P-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 ATMEGA328P-PU use?

Most are built on AVR/Arduino (5) and STM32 (1).

How big is a typical board using the ATMEGA328P-PU?

The median is 135.6 × 100.3 mm, and 83% are two-layer designs.

What is the most popular open source board using the ATMEGA328P-PU?

By GitHub stars, Lumberjack by peej, with 402 stars.

Can I simulate one of these boards using the ATMEGA328P-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.

Browse boards by part