Photos: The insides of a Roomba

Cracking the case requires that you remove quite a number of screws: four around the edge of the underside, two by the center wheel, four near the battery cavity, two more under each of those, one in each wheel well, and three near each well.

The entire front of the Roomba serves to detect when the unit hits something. The black semicircular plastic piece that covers the entire front of the machine is a switch that moves inward and informs the Roomba when it has just struck something. The piece removed for this view was the virtual wall sensor. It connected to the white connector you see in the middle of this picture.

Credit: CNET Networks

See more stories like this on the Photos page