3 open source boards using the XL9555 / PCF8575 (TSSOP-24)

Real designs built with the XL9555 / PCF8575 (TSSOP-24), 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 XL9555 / PCF8575 (TSSOP-24) in open source designs

The gallery holds 3 open source boards using the XL9555 / PCF8575 (TSSOP-24) from 1 GitHub repository; a typical one measures about 87.2 × 89.6 mm and carries around 46 components.

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

The most starred is 12key by mknudsen404-QA.

Microcontrollers on boards using the XL9555 / PCF8575 (TSSOP-24)

ESP32 3

What boards using the XL9555 / PCF8575 (TSSOP-24) are built for

XL9555 / PCF8575 (TSSOP-24): common questions

Where can I find a XL9555 / PCF8575 (TSSOP-24) reference design?

Each of the 3 boards on this page is a real design using the XL9555 / PCF8575 (TSSOP-24). 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 XL9555 / PCF8575 (TSSOP-24) use?

Most are built on ESP32 (3).

How big is a typical board using the XL9555 / PCF8575 (TSSOP-24)?

The median is 87.2 × 89.6 mm, and 100% are two-layer designs.

What is the most popular open source board using the XL9555 / PCF8575 (TSSOP-24)?

By GitHub stars, 12key by mknudsen404-QA, with 0 stars.

Can I simulate one of these boards using the XL9555 / PCF8575 (TSSOP-24) 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.