Off road light wiring diagram -.
Battery-based USB chargers are pretty cheap, but it's always cheaper and more fun to make your own. The basic concept is a battery that powers a USB port so that you can juice up your gadgets.
"Flatwire" goes directly on your walls and disappears with a layer of paint
Martin E. Meserve - K7MEM - Single Layer Air Core Inductor Design
This is really useful. Wire gauge inch and mm thickness info
Generator | Electrical Engineering Books
How To Wire a Switch - Light then Switch then Outlet
LED lighting saves electricity, money, and offers a greener alternative to incandescent and fluorescent lighting.