5 open source boards using the C55136

Real designs built with the C55136, 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 C55136 in open source designs

The gallery holds 5 open source boards using the C55136 from 2 GitHub repositories; a typical one measures about 182 × 129 mm and carries around 498 components.

80% use four copper layers or more, and 80% carry an open source license.

The most starred is Poly kybd split72 left by thpoll83.

Microcontrollers on boards using the C55136

What boards using the C55136 are built for

C55136: common questions

Where can I find a C55136 reference design?

Each of the 5 boards on this page is a real design using the C55136. 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 C55136 use?

Most are built on RP2040/RP2350 (4) and ESP32 (1).

How big is a typical board using the C55136?

The median is 182 × 129 mm, and 20% are two-layer designs.

What is the most popular open source board using the C55136?

By GitHub stars, Poly kybd split72 left by thpoll83, with 406 stars.

Can I simulate one of these boards using the C55136 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