3 open source boards using the ATMEGA644-20AU

Real designs built with the ATMEGA644-20AU, 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.

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The ATMEGA644-20AU in open source designs

The gallery holds 3 open source boards using the ATMEGA644-20AU from 2 GitHub repositories; a typical one measures about 95.2 × 67.5 mm and carries around 44 components.

100% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.

The most starred is SD2IEC Pluggable by hackup.

Microcontrollers on boards using the ATMEGA644-20AU

What boards using the ATMEGA644-20AU are built for

Retro computing 2

ATMEGA644-20AU: common questions

Where can I find a ATMEGA644-20AU reference design?

Each of the 3 boards on this page is a real design using the ATMEGA644-20AU. 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 ATMEGA644-20AU use?

Most are built on AVR/Arduino (2) and ESP8266 (1).

How big is a typical board using the ATMEGA644-20AU?

The median is 95.2 × 67.5 mm, and 100% are two-layer designs.

What is the most popular open source board using the ATMEGA644-20AU?

By GitHub stars, SD2IEC Pluggable by hackup, with 29 stars.

Can I simulate one of these boards using the ATMEGA644-20AU 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.