7 open source boards using the CAT4004[_AB]

Real designs built with the CAT4004[_AB], 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 CAT4004[_AB] in open source designs

The gallery holds 7 open source boards using the CAT4004[_AB] from 7 GitHub repositories; a typical one measures about 120 × 75 mm and carries around 108 components.

71% carry an open source license.

The most starred is Portapack havoc modified by jamesshao8.

What boards using the CAT4004[_AB] are built for

CAT4004[_AB]: common questions

Where can I find a CAT4004[_AB] reference design?

Each of the 7 boards on this page is a real design using the CAT4004[_AB]. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.

What parts are used alongside the CAT4004[_AB]?

The 5M40ZE64, AK4951EN, NUF4220MN, 74HC1G04GW and BQ24075RGT appear in the most repositories here.

How big is a typical board using the CAT4004[_AB]?

The median is 120 × 75 mm.

What is the most popular open source board using the CAT4004[_AB]?

By GitHub stars, Portapack havoc modified by jamesshao8, with 186 stars.

Can I simulate one of these boards using the CAT4004[_AB] 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