Intermediate Robot Building, Second Edition offers the kind of real-world knowledge that only an experienced robot builder can offer-the kind that other beginners only learn through making mistakes. In this book, you'll learn the value of a robot heartbeat and the purpose of the wavy lines in photocells. You'll find out a superior way to follow lines and what electronic part you should sand. You'll discover how a well-placed switch can help a robot avoid obstacies better than a pair of feelers. And, you'll learn about how to avoid causing a capacitor to explode.<BR><BR>Want a robot that can explore rooms, follow lines, or battle opponents without remote control? This book presents step-by-step instructions with a heavy emphasis on photographs, as well as circuit and part descriptions so that you can build the robot featured in this book. The chapters focus on standalone modules that can either be brought together to make a complete robot, or substituted into your own independent designs. It's completely your choice.<BR><BR>You'll use many of the same techniques used by professional robotics engineers-and you'll experience many of the same challenges and joys they feel when your robot "comes to life". This book is perfect for loyal readers of my first book, Robot Building For Beginners, as well as for backyard scientists that have already taught themselves the basics. Enjoy!