3 open source boards using the 8255

Real designs built with the 8255, 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 8255 in open source designs

The gallery holds 3 open source boards using the 8255 from 3 GitHub repositories; a typical one measures about 104 × 82.6 mm and carries around 20 components.

100% are two-layer designs, the rest use four layers or more, and 67% carry an open source license.

The most starred is PPort by homebrew8088.

Microcontrollers on boards using the 8255

ESP8266 1

What boards using the 8255 are built for

8255: common questions

Where can I find a 8255 reference design?

Each of the 3 boards on this page is a real design using the 8255. 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 8255 use?

Most are built on ESP8266 (1).

How big is a typical board using the 8255?

The median is 104 × 82.6 mm, and 100% are two-layer designs.

What is the most popular open source board using the 8255?

By GitHub stars, PPort by homebrew8088, with 238 stars.

Can I simulate one of these boards using the 8255 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.