The is the Rover I build. The Rover is able to turn its body and to change the position of so that the underside becomes the upper side. Initially, I use 4 motors for motion and 2 motors for the flipper. Later, I added 2 more motors for motion and hope it is able to climb up stairs. But it is fail to do so. Then , I modified the body frame and extended the size. Replacing the wheels by tracks and named the project "DIY Packbot".
The details of the building log is in my facebook.