Abstract: A tent peg with illumination device includes, a peg seat, a cord fixing part, an illumination device, and a resilient member. Therein, the peg seat has a peg bore in the middle for a peg body to pass through. The cord fixing part is disposed on one end of the peg seat for fastening a cord body. The illumination device has an installation seat and an illumination assembly. The installation seat is on the other end of the peg seat, and the illumination assembly is installed on the installation seat and capable of rotating against the installation seat for enabling the illumination assembly to illuminate. The resilient member is between the illumination assembly and the installation seat. During the rotation of the illumination assembly against the installation seat, the illumination assembly stably contacts an inner wall of the installation seat through the resilient member.

Abstract: A portable Bluetooth camping light includes a lamp body, a battery unit, a speaker, and a remote controller. The remote controller is allowed to remotely control the intensity of the light beam of the first illumination source. The lamp body is used to receive the sound information of a handheld device for broadcasting through the speaker. The battery unit is allowed to charge an external electronic device.

Abstract: A method for controlling a stepping motor in an optical storage system and for achieving a short seek with the stepping motor is disclosed. The optical storage system comprises a pick-up head and object lens, wherein the object lens is movably installed on the pick-up head. The method includes determining a number of steps that the stepping motor should rotate; moving the object lens toward a target track; and utilizing the stepping motor to move the pick-up head toward a target position according to the number of steps that the stepping motor should rotate.

Abstract: A method for controlling a stepping motor in an optical storage system and for achieving a short seek with the stepping motor is disclosed. The optical storage system comprises a pick-up head and object lens, wherein the object lens is movably installed on the pick-up head. The method includes determining a number of steps that the stepping motor should rotate; moving the object lens toward a target track; and utilizing the stepping motor to move the pick-up head toward a target position according to the number of steps that the stepping motor should rotate.