2 open source boards using the ULN2803A
Real designs built with the ULN2803A, 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.
NXPRC11-2
AgOpenGPS-Official
159 × 130 mm100 parts4LGPL-3.020
RC12-3
89 × 100 mm35 parts2LGPL-3.020
The ULN2803A in open source designs
The gallery holds 2 open source boards using the ULN2803A from 1 GitHub repository; a typical one measures about 124 × 115 mm and carries around 68 components.
50% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is RC11-2 by AgOpenGPS-Official.
Microcontrollers on boards using the ULN2803A
What boards using the ULN2803A are built for
ULN2803A: common questions
Where can I find a ULN2803A reference design?
Each of the 2 boards on this page is a real design using the ULN2803A. 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 ULN2803A use?
Most are built on NXP (1).
How big is a typical board using the ULN2803A?
The median is 124 × 115 mm, and 50% are two-layer designs.
What is the most popular open source board using the ULN2803A?
By GitHub stars, RC11-2 by AgOpenGPS-Official, with 20 stars.
Can I simulate one of these boards using the ULN2803A 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.