using "off the shelf parts" i have constructed another
pretty good mobile robot. a tablet pc is the brain and
the roomba robot vac is the locomotion. currently working
on sending the ir commands from the pc to the roomba and
having the robot "do a tour" and post photos / video
automatically to the roblog (my robot photo blog).

pictures of the tablet pc roomba-bot:
http://www.philliptorrone.com/roombatabletbot/

cheers,
pt