Text this: A 24*7 patrolling mobile robot (part 1 - navigation)

  _____     ______    ______    _____    _    _   
 /  ___||  /_   _//  /_   _//  |  ___|| | \  / || 
| // __     -| ||-   `-| |,-   | ||__   |  \/  || 
| \\_\ ||   _| ||_     | ||    | ||__   | .  . || 
 \____//   /_____//    |_||    |_____|| |_|\/|_|| 
  `---`    `-----`     `-`'    `-----`  `-`  `-`