CONTROL AND MONITORING CIRCUITRY FOR ILLUMINATED INTERFACE

An illuminated interface system may include an illumination circuit, a switch circuit, and a controller. The illumination circuit is configured to illuminate a light source. The switch circuit is configurable into a plurality of states, where at least one of the plurality of states represents a user input. The controller is electrically connected to the illumination circuit and the switch circuit through a single signal wire. The controller includes a drive circuit and a sensing circuit. The drive circuit is configured to provide a drive signal to the illumination circuit via the single signal wire. The sensing circuit is configured to detect a state of the switch circuit.