2 open source boards using the C426705

Real designs built with the C426705, 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 C426705 in open source designs

The gallery holds 2 open source boards using the C426705 from 2 GitHub repositories; a typical one measures about 167.5 × 114.9 mm and carries around 221 components.

100% use four copper layers or more, and 50% carry an open source license.

The most starred is Why2025 by ranzbak.

Microcontrollers on boards using the C426705

What boards using the C426705 are built for

Wearables 1

C426705: common questions

Where can I find a C426705 reference design?

Each of the 2 boards on this page is a real design using the C426705. 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 C426705 use?

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

How big is a typical board using the C426705?

The median is 167.5 × 114.9 mm, and 0% are two-layer designs.

What is the most popular open source board using the C426705?

By GitHub stars, Why2025 by ranzbak, with 1 stars.

Can I simulate one of these boards using the C426705 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.