8 open source boards using the ATMEGA32U2

Real designs built with the ATMEGA32U2, 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 ATMEGA32U2 in open source designs

The gallery holds 8 open source boards using the ATMEGA32U2 from 5 GitHub repositories; a typical one measures about 121.4 × 54.3 mm and carries around 41 components.

100% are two-layer designs, the rest use four layers or more, and 75% carry an open source license.

The most starred is Amkey usb by BASLQC.

Microcontrollers on boards using the ATMEGA32U2

What boards using the ATMEGA32U2 are built for

ATMEGA32U2: common questions

Where can I find a ATMEGA32U2 reference design?

Each of the 8 boards on this page is a real design using the ATMEGA32U2. 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 ATMEGA32U2 use?

Most are built on AVR/Arduino (8).

How big is a typical board using the ATMEGA32U2?

The median is 121.4 × 54.3 mm, and 100% are two-layer designs.

What is the most popular open source board using the ATMEGA32U2?

By GitHub stars, Amkey usb by BASLQC, with 24 stars.

Can I simulate one of these boards using the ATMEGA32U2 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