Electromagnetic mode change of peripheral interface wheel

A method of changing a rotational resistance profile for a rotary input control on a user input device, the method comprising:

• receiving an input signal indicating a selection of one of a plurality of rotational resistance profiles for the rotary input control that includes a first operational state and a second operational state;
• in response to the received input signal corresponding to the selection of the first operational state, causing a magnetizing system to electromagnetically control a magnetic polarization of a permanent magnet of an electropermanent magnet (EPM) system to apply a first resistance profile to the rotary input control;
• and
• in response to the received input signal corresponding to the selection of the second operational state, causing the magnetizing system to electromagnetically control the magnetic polarization of a permanent magnet of an electropermanent magnet (EPM) assembly to apply a second resistance profile to the rotary input control.

A computer mouse comprising:

• a rotary input control, comprising:
• a wheel;
• and
• an electropermanent magnet (EPM) assembly, comprising:
• two or more permanent magnets;
• and
• a magnetizing assembly configured to control a polarization of each of the two or more permanent magnets via an electrical current to transition the electropermanent magnet assembly between a plurality of operating states in which the EPM assembly is operable to apply any of a plurality of resistance profiles to the wheel based on how each of the two or more permanent magnets are polarized by the magnetizing assembly,
• wherein the magnetizing assembly is operable to polarize each of the two or more permanent magnets such that each of the two or more permanent magnets either emits or does not emit a magnetic field.