2 open source boards using the PCF8574T/3,518

Real designs built with the PCF8574T/3,518, 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 PCF8574T/3,518 in open source designs

The gallery holds 2 open source boards using the PCF8574T/3,518 from 1 GitHub repository; a typical one measures about 60 × 110 mm and carries around 127 components.

100% use four copper layers or more, and 100% carry an open source license.

The most starred is Nucula v2 by zeugmaster.

Microcontrollers on boards using the PCF8574T/3,518

ESP32 2

What boards using the PCF8574T/3,518 are built for

PCF8574T/3,518: common questions

Where can I find a PCF8574T/3,518 reference design?

Each of the 2 boards on this page is a real design using the PCF8574T/3,518. 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 PCF8574T/3,518 use?

Most are built on ESP32 (2).

How big is a typical board using the PCF8574T/3,518?

The median is 60 × 110 mm, and 0% are two-layer designs.

What is the most popular open source board using the PCF8574T/3,518?

By GitHub stars, Nucula v2 by zeugmaster, with 0 stars.

Can I simulate one of these boards using the PCF8574T/3,518 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.