Welcome — your first real robot

You're about to build a Line Follower — a small two-wheeled robot that detects a black line on the floor and drives along it on its own.

This is the same idea factories use to move parts between machines, hospitals use to deliver medicine trays at night, and Amazon's old Kiva warehouse bots used before lidar.

The magic is simple: two eyes (IR sensors), one brain (Arduino), two legs (motors). You'll wire it, code it, test it in our simulator, and — if you have the parts — actually build it.

But we won't *tell* you how. At every step, you'll be asked a question first. Get it right, you move on. Get it wrong twice, we explain. That's how real engineers learn.

Ready?