benjamion button title mapping

hi, how can i make this type of mapping?

http://vimeo.com/28918545

You have a great tutorial about this on CG Cookie : http://cgcookie.com/blender/2013/02/28/rigid-body-physics-create-falling-buttons-image/ ;).

tanks…do you know if the uv projector play also with particle instead of different object?

i must to do a video similar to this

and i use pareticle do duplicate instance of animation…but i must to project image above