Robotics P1

it shows how the roomba uses the infared sensors to detect cliffs and dropoffs. the robot expects to recieve signals from the floor and if the signals take too long to get back to the robot such as driving over stairs, the roomba will stop and go in a different direction

This is a good video that has to do with cliff detection .

This is the patent for the object detection system from irobot corporation

how the robot thing workss.

I see good link it helped me understand the projects goals on a higher level

teaches you how the ultra sonic sensor works