Robots do all sorts of things, but climbing walls
seems to be a goal engineers can't live without. Meet the Waalbot which is fitted with gecko-like micro fiber feet that can stick to vertical and ceiling surfaces. In addition, the legs are wheeled with three feet that can rotate and cruise over surface curvature and even grab onto other walls at right angles. Unlike other wall-climbing robots, this one is small and light, and given its diminutive size, capacity varies depending on the surface type and size of feet. Using a PIC microcontroller and wireless controls along with batteries, Waalbot is designed to be completely autonomous and untethered.
[Via Engineering TV