Methods and apparatus relating to a mechanical system on computer with rotational projector and RealSense™ camera are described. In an embodiment, a device includes three portions: a first portion to comprise a projector; a second portion to comprise a camera; and a third portion to comprise one or more computing system components. At least the first and second portions are rotationally engaged to allow for independent rotation of the first portion and the second portion. Other embodiments are also disclosed and claimed.