You've likely had a printer that didn't work and needed to be replaced or disposed of. However, it's not a big pile of plastic and metal heading straight for a dump. If you are a resourceful maker, an ...
† Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, United States ‡ Department of Civil Engineering and Mechanics, ...
The Joule Thief Circuit is a simple and clever electronic design that can power an LED using a nearly dead battery.
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