it is required to build a line tracking robot for the university library. This Robot job is to return back the books to their shelves. in this phase the robot is not expected to bring the books from the shelves also it is not required to put the book in its correct place inside the shelf. it is required to take the book and lay it on its correct shelf then the librarian should put each book in its place.
Each book must have bar-code sticker contains the book ID code (or ISBN code) in the library. Also each shelf must have its bar-code label.