Magnetic linear fader

A linear fader comprising:

• a slider that is configured to slide along a rail, wherein the slider comprises a magnet;
• a plurality of coils spaced along a length of the rail, wherein a first portion of the plurality of coils is spaced along a first side of the rail, and wherein a second portion of the plurality of coils is spaced along a second side of the rail;
• one or more sensors configured to detect a position of the slider along the rail;
• and
• control circuitry operatively coupled to the plurality of coils and the one or more sensors, wherein the control circuitry is configured to:
• receive a first location of the slider from at least one of the one or more sensors;
• receive a signal corresponding to a desired location of the slider;
• and
• cause a first electrical current to pass through the plurality of coils, thereby generating a force on the slider in a direction toward the desired location.