Base assemblies having conductive pads for knob on display devices and related systems, methods, and devices

A knob on display (KoD) device, comprising:

• a base assembly to mount the KoD device to a touch screen, the base assembly including:
• a base portion including electrically insulating material, the electrically insulating material having an interior surface and an exterior surface opposite the interior surface, a thickness of the base portion defined between the interior surface and the exterior surface, the exterior surface of the electrically insulating material to face and mount to the touch screen;
• multiple extender pads including electrically conductive material, the multiple extender pads disposed through the base portion from the interior surface to the exterior surface, respective ones of the multiple extender pads circumferentially disposed around the base portion at a distance radially from a center of the base portion;
• an inner housing having a surface adjacent the interior surface of the electrically insulating material of the base portion, the inner housing to rotate about a post within the base assembly, the post extending from the interior surface of the electrically insulating material of the base portion;
• and
• the one or more electrode pads carried by and exposed at the surface of the inner housing, the one or more electrode pads to rotate with the inner housing and move over the interior surface of the electrically insulating material of the base portion responsive to rotation of the inner housing, at least one of the one or more electrode pads to make contact with, at the interior surface, at least one of the multiple extender pads responsive to the rotation, the one or more electrode pads maintained at a constant distance from the touch screen substantially equal to the thickness of the base portion,
• wherein the multiple extender pads physically exposed at the exterior surface of the electrically insulating material of the base portion from a perspective taken from outside of the base assembly.

A knob on display (KoD) system, comprising:

• a touch screen device including a touch screen;
• and
• a KoD device including a base assembly comprising:
• a base portion including electrically insulating material between the KoD device and the touch screen, the electrically insulating material having an interior surface and an exterior surface opposite the interior surface, a thickness of the base portion defined between the interior surface and the exterior surface, the exterior surface to face and mount to the touch screen, the base portion including multiple extender pads disposed through the electrically insulating material of the base portion from the interior surface to the exterior surface, the multiple extender pads including electrically conductive material, respective ones of the multiple extender pads circumferentially disposed around the base portion at a distance radially from a center of the base portion;
• an inner housing having a surface adjacent the interior surface of the electrically insulating material of the base portion, the inner housing to rotate about a post within the base assembly, the post extending from the interior surface of the electrically insulating material of the base portion;
• and
• one or more electrode pads carried by and exposed at the surface of the inner housing, the one or more electrode pads to rotate with the inner housing and move over the interior surface of the electrically insulating material of the base portion responsive to rotation of the inner housing, at least one of the one or more electrode pads to make contact with, at the interior surface, at least one of the multiple extender pads responsive to the rotation, the one or more electrode pads maintained at a constant distance from the touch screen substantially equal to the thickness of the base portion,
• wherein the multiple extender pads are physically contacting the touch screen free of intervention from other portions of the base assembly.