Learn to control electricity with the click of a button, the tip of your finger, and even the light from the sun!Ready to have the incredible world of electronics at your fingertips? Ward off intruders with an alarm that buzzes when someone opens your bedroom door, create a reaction game you can play with your friends, and build your own playable musical instrument with funky digital soundsall while learning the ins and outs of batteries, electric currents, breadboards, and more! Throughout your electronics journey, youll:Calculate resistance, voltage, and current values with Ohms lawSolder components to a circuit board to create permanent projectsUse transistors to create smart devices that react to touchThe second edition of this bestselling kids book is revised and updated to focus on building a strong foundation of electronics, with more accessible language and less complicated theory. Plus, project product lists are less expensive, with more readily available components and tools. Full-color illustrations and diagrams provide helpful context and keep you engaged throughout.