1. A system comprising: a bushing; a button carrier disposed around the bushing, the button carrier defining a slot; a touch-sensitive input device coupled to the bushing and the button carrier, the bushing configured to support and isolate the touch-sensitive input device and to allow the touch-sensitive input device to move in a rotary degree of freedom; an actuator configured to induce rotation of the touch-sensitive input device; and a pin coupled to the touch-sensitive input device, the pin configured to engage with the slot such that rotation of the touch-sensitive input device is limited by movement of the pin within the slot.