2 open source boards using the C97521

Real designs built with the C97521, 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 C97521 in open source designs

The gallery holds 2 open source boards using the C97521 from 1 GitHub repository; a typical one measures about 130.6 × 82 mm and carries around 126 components.

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

The most starred is KnH0F by kodachi614.

Microcontrollers on boards using the C97521

RP2040/RP2350 2

What boards using the C97521 are built for

Keyboards 2

C97521: common questions

Where can I find a C97521 reference design?

Each of the 2 boards on this page is a real design using the C97521. 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 C97521 use?

Most are built on RP2040/RP2350 (2).

How big is a typical board using the C97521?

The median is 130.6 × 82 mm, and 100% are two-layer designs.

What is the most popular open source board using the C97521?

By GitHub stars, KnH0F by kodachi614, with 7 stars.

Can I simulate one of these boards using the C97521 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.