A wall controller is provided. The wall controller includes a projection screen having an input device and a projector, wherein the projector has an optical axis that is non-orthogonal to the projection screen. The wall controller includes a housing having the projector at an end of the housing. The housing is dimensioned to fit the end of the housing through an aperture in a first wall, fit the end into a wall space between the first wall and a second wall, and fit a majority of another end of the housing into the aperture until the projection screen is parallel to a surface of the first wall and a front portion of the projection screen is flush with, recessed in or extends from the surface of the first wall.