https://tube.loping.net/videos/watch/ac82d4c0-6558-4bbf-ac15-185f2c1787c3 About two years ago, my friend Will purchased a 100W LED from ebay with a plug-in power adapter. I thought I could do better, so I got a bunch of 18650 ultrafire lithium ion batteries, hooked them in series and made a buck mode power supply using an AVR to control it. Photo album here: https://plus.google.com/u/0/photos/110520978303193127914/albums/5800524841292618337 I didn't post the schematics anywhere... but I do have the layouts for Express PCB. Sadly it doesn't seem to have too many details: https://cnlohr.net/pubsvn/electrical/avr_smps/ Tue, 04 Aug 2026 23:29:24 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://tube.loping.net https://tube.loping.net/lazy-static/avatars/8a56e488-2120-4649-a417-badf5893657b.png https://tube.loping.net/videos/watch/ac82d4c0-6558-4bbf-ac15-185f2c1787c3 All rights reserved, unless otherwise specified in the terms specified at https://tube.loping.net/about and potential licenses granted by each content's rightholder.