A controller configured to provision on a surface of an environment includes a projector configured to project light for a user interface through an opening in the surface, wherein the projector is located on a first side of the surface. The controller includes a waveguide located within the opening of the surface, wherein the waveguide is configured to transmit the light from the projector through the opening in the surface. The controller further includes a direction element located on a second side of the surface, wherein the direction element is configured to direct the light from the projector to a user.