1 open source board using the ULN2803C

Real designs built with the ULN2803C, 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 ULN2803C in open source designs

The gallery holds 1 open source boards using the ULN2803C from 1 GitHub repository; a typical one measures about 100 × 100 mm and carries around 150 components.

100% use four copper layers or more, and 0% carry an open source license.

The most starred is K9HZ 100W 11band LPF-Control by DRWJSCHMIDT.

ULN2803C: common questions

Where can I find a ULN2803C reference design?

Each of the 1 boards on this page is a real design using the ULN2803C. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.

How big is a typical board using the ULN2803C?

The median is 100 × 100 mm, and 0% are two-layer designs.

What is the most popular open source board using the ULN2803C?

By GitHub stars, K9HZ 100W 11band LPF-Control by DRWJSCHMIDT, with 18 stars.

Can I simulate one of these boards using the ULN2803C 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