How does a robot know when to stop, turn, or grab something? In this exciting guide, you’ll explore the hidden world of sensors and circuits, the parts that help robots sense their surroundings and think with electricity. Discover how cameras act as robot eyes, microphones become robot ears, and wires carry messages like lightning-fast highways. You’ll see how circuits power every move, how electricity travels through a robot’s “nervous system,” and how sensors help robots see in the dark, avoid walls, and even smell danger!