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Making Things Move DIY Mechanisms for Inventors, Hobbyists, and Artists by Dustyn Roberts

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10Projects

The projects below draw on the skills you’ve learned in several of the chapters in this book.

Project 10-1: Not Lazy Susan

In this project, we’ll use a lazy Susan (also called a turntable or thrust bearing) to create a rotating platform. To make things interesting, we’ll use an infrared (IR) LED and phototransistor to make the table rotate with just a wave of your hand.1,2 You can use this as a table to magically serve food to dinner guests, or to make a fun interactive centerpiece for the next wedding you plan.

If you did Project 6-7 with a transistor and Project 6-8 with a photocell, this will be easy. If not, don’t worry—we’ll still go step by step. We’ll build the box first, then the circuit, and finally integrate the two. As ...

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