Discover the magic of electricity through hands-on projects designed to teach kids the basics, while having fun and building cool gadgets! 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 secret message machine to communicate with friends, and build your own playable musical instrument with funky digital sounds-all while learning the ins and outs of batteries, electric currents, breadboards, and more! Throughout your electronics journey, you'll:

• Calculate resistance, voltage, and current values with Ohm's law
• Solder components to a circuit board to create permanent projects
• Use transistors to create "smart" devices that react to touch
• Decode 1s and 0s into words and images
• Build circuits that help you make decisions, like a coin tosser that chooses heads or tails

The 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, diagrams, and new high-quality photographs provide helpful context and keep you engaged throughout.