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Building a Basic 555 Timer Circuit with Mark Frauenfelder

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Mark Frauenfelder teaches a crowd at Engadget Expand how to build a basic circuit. Using a 555 timer, breadboard, and some common components, participants used conductive paint to design a touch-circuit on paper. We’ve captured his presentation and you can follow along at home: Originally published Nov. 10, 2013.   Read more »

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