Abstract: An oscillating fan control system includes a holder, a stepper motor, a rotating shaft, a shaft encoder, and a controller. The controller is electrically coupled to the stepper motor and the shaft encoder. The shaft encoder can generate a status signal corresponding to a rotation path of the rotating shaft. The controller includes a reversing circuit and a driving circuit. The reversing circuit can generate a reversing signal for the stepper motor in response to the status signal indicating a deviation of the rotating shaft from a midpoint position of the rotation path. The driving circuit can generate pulse signals for the stepper motor according to a subdivision parameter and an oscillation angle. A method for controlling an oscillating fan is also disclosed.

Abstract: The present application discloses a self-watering pot base comprises a pot base, a lid and at least one absorbent. The lid is removably coupled to the pot to form an accommodation space, the lid comprises at least one leaking hole and at least one absorbent hole. The at least one absorbent passes through the at least one absorbent hole to reach the accommodation space. A method of using the aforementioned self-watering pot base is also disclosed, comprising coupling the lid and the pot base; and locating a fabric pot onto the lid.

Abstract: A reusable activated carbon filter is disclosed. It comprises: an outer mesh hollow cylinder, having a plurality of meshes formed thereon; an inner mesh hollow cylinder, having a plurality of meshes formed thereon, located inside the outer mesh hollow cylinder; two fixing rings, each having a plurality of long curved openings and a plurality of fixing holes, and fixing the outer mesh hollow cylinder and the inner mesh hollow cylinder at the same end; two flexible padding rings, each having a plurality of fixing protrusions, and detachably padding the long curved openings of one of the fixing rings with one fixing protrusion plugged in one corresponding fixing hole; a top connector, removably connected to one fixing ring, having a connecting opening for connecting to an inline fan; and a bottom cover, connected to the other fixing ring. Activated carbon granules are filled between the two mesh hollow cylinders.

Abstract: The present application discloses a self-watering pot base comprises a pot base, a lid and at least one absorbent. The lid is removably coupled to the pot to form an accommodation space, the lid comprises at least one leaking hole and at least one absorbent hole. The at least one absorbent passes through the at least one absorbent hole to reach the accommodation space. A method of using the aforementioned self-watering pot base is also disclosed, comprising coupling the lid and the pot base; and locating a fabric pot onto the lid.