How does a roomba find and follow a path to it’s dock?

Question

I’m working on a robot that follows people for a school project and i was wondering how the roomba does it, and if maybe i could do the same thing on the robot.

Edit: i think my roomba doesn’t map out the rooms as it’s pretty old, but still finds the dock

In: 4

Answer 1

The roomba has a memory, for where the dock is, and the dock emits a signal that the roomba can detect. Then the actual docking procedure uses the other “chair leg avoidance” sensors.