2 open source boards using the 4N38
Real designs built with the 4N38, 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.
PCB - mainet mega-5V-to mp-10V
nagar2021
43.2 × 67.3 mm12 parts2LCustom license1
PCB - mainet mega rotary pulse
38.1 × 80 mm8 parts2LCustom license1
The 4N38 in open source designs
The gallery holds 2 open source boards using the 4N38 from 1 GitHub repository; a typical one measures about 40.6 × 73.7 mm and carries around 10 components.
100% are two-layer designs, the rest use four layers or more, and 0% carry an open source license.
The most starred is PCB - mainet mega-5V-to mp-10V by nagar2021.
4N38: common questions
Where can I find a 4N38 reference design?
Each of the 2 boards on this page is a real design using the 4N38. 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 4N38?
The median is 40.6 × 73.7 mm, and 100% are two-layer designs.
What is the most popular open source board using the 4N38?
By GitHub stars, PCB - mainet mega-5V-to mp-10V by nagar2021, with 1 stars.
Can I simulate one of these boards using the 4N38 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.