3 open source boards using the CM4

Real designs built with the CM4, 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.

3 boardsClear filtersOpen license only|Most starred Recently updated Most components

The CM4 in open source designs

The gallery holds 3 open source boards using the CM4 from 1 GitHub repository; a typical one measures about 80 × 80 mm and carries around 144 components.

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

The most starred is Eps by OSUSat.

Microcontrollers on boards using the CM4

What boards using the CM4 are built for

CM4: common questions

Where can I find a CM4 reference design?

Each of the 3 boards on this page is a real design using the CM4. 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 CM4 use?

Most are built on STM32 (2) and Raspberry Pi (1).

How big is a typical board using the CM4?

The median is 80 × 80 mm, and 0% are two-layer designs.

What is the most popular open source board using the CM4?

By GitHub stars, Eps by OSUSat, with 7 stars.

Can I simulate one of these boards using the CM4 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.