This page is a repository for build files which are considered public domain. It is hoped that by distributing these files widely, they remain visible to DIY enthusiasts looking for free projects that do not infringe on the copyright or intellectual property of the designer. You can download these projects, modify them as you wish and get your own boards manufactured. I have used JLCPCB and have found them to be cheap and good quality with fast shipping.
The individual pages generally contain PCB Gerber files. You can download the zip file from here and upload it to a PCB manufacturer. Where possible, links to the original build articles are provided. If you are looking for help with these projects, please go to the linked websites.
Click on the links below to get to the pages that contain the files and any further information.
LM3886 Amplifier by Chipamp.com
Amplifier soft-start and low voltage illuminated on/off switch – H9KPXG
If you encounter a problem downloading any of the files from the linked pages, please let me know and I’ll try to resolve it.