Abstract: In non-limiting examples of the present disclosure, a user input device is provided. The user-input device may include non-contact magnetic, capacitive, or inductive components for translating movements of a joystick into angular positions. Magnets attached to axial shafts of a joystick assembly may cause changes in voltage in magnetometers on a PCB when the axial shafts are rotated, which may be translated into angular positions of the joystick. Conductors attached to axial shafts of a joystick assembly may cause changes in capacitive charge in capacitors on a PCB when the axial shafts are rotated, which may be translated into angular positions of the joystick. Anisotropic magnetically permeable material and/or excitation components attached to axial shafts of a joystick assembly may cause changes in inductance in inductors on a PCB when the axial shafts are rotated, which may be translated into angular positions of the joystick.

Abstract: Disclosed are embodiments of a humidifier bottle apparatus. One embodiment of the apparatus includes a main housing, a fill shaft extending at an angle from the main housing, and a substantially dome-shaped main housing cap, which is releasably connected with the main housing. Gas inlet and gas outlet ports are also connected with the main housing cap. A purge valve feature may be included with some embodiments of the humidifier bottle apparatus. The purge valve feature may provide for audible and/or visual warnings of pressure increases within the apparatus.