Push a button on a music player, and a song suddenly comes out of the speakers. Push a button on a TV’s remote control, and your favorite shows come to life instantly. These wonders happen thanks to the magic of electricity, a type of energy that powers all the technology in your home. By the time you finish this book, you’ll be an electronics wizard, and then you can try using your powers to build any invention you can imagine!

This book is all about understanding electricity and using it to make amazing things. In this chapter, we’ll explore how electricity works, and then you’ll build a complete electronics project: a ...

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