Abstract: A direct drive motor includes a base, a stator assembly provided on the outer periphery of the base, a rotating shaft assembly provided in the base, and a rotor assembly connected to the rotating shaft assembly and covering the stator assembly. The base includes an inner end, an outer end, and a receiving chamber passing through the inner end and the outer end. The rotating shaft assembly is rotatably mounted in the receiving chamber. A first circuit board is mounted at the inner end; a recess is formed in the outer end; a second circuit board is mounted in the recess; and the first circuit board is connected to the second circuit board. When being applied to an apparatus such as an intelligent device and an intelligent robot, the direct drive motor is good in stability, high in intelligence, reliable in overall structure, and strong in practicability.

Abstract: A light-emitting device includes a semiconductor epitaxial structure including a first semiconductor layer, an active layer, and a second semiconductor layer, and having holes; a first insulation layer disposed on the semiconductor epitaxial structure and having first and second grooves; a first pad electrically connected to the first semiconductor layer through the first grooves; and a second pad electrically connected to the second semiconductor layer through the second grooves. A projection of the first pad does not overlap projections of the holes. A projection of the second pad does not overlap the projections of the holes. The first pad includes a first pad connection portion and first pad extension portions; the second pad includes a second pad connection portion and second pad extension portions. Projections of the second grooves fall between projections of the first and second pad extension portions. Two other aspects of the light-emitting device are also provided.

Abstract: Disclosed is a light-emitting device which includes a light-emitting element and a wavelength conversion layer, and light of a first wavelength emitted by the light-emitting element is converted into light of a second wavelength and light of a third wavelength through the wavelength conversion layer. The light-emitting element includes a first contact layer, and the reflectivity of the first contact layer to the third wavelength is greater than 85%, so that the reflectivity of the light of the second wavelength and the light of the third wavelength converted by the wavelength conversion layer and reflected to the surface of the light-emitting element may be increased, and the white light conversion efficiency and the light extraction efficiency of the light-emitting device are improved.

Abstract: The invention provides a compound represented by the following structural formula: (I) or a pharmaceutically acceptable salt, or a stereoisomer thereof useful for treating cancer.

Abstract: The present disclosure provides a shutter structure (100) and a photographing device (1000). The shutter structure (100) includes a stator assembly (20), a rotor assembly (40), and a blade assembly (60). The stator assembly (20) includes a mounting member (24) and a cover (28). The rotor assembly (40) is sleeved over by the mounting member (24). The blade assembly (60) includes blades (62) rotatably connected to the cover (28). The rotor assembly (40) drives a guide rod (624) to drive the blades (62) to rotate around a rotating shaft (622).

Abstract: Embodiments of the present disclosure provide a motor applicable to a shutter device, including a printed circuit board assembly with a winding, a stator iron core, a rotor, and a magnet mounted on the rotor. The printed circuit board assembly includes a first side and a second side. The stator iron core is mounted on the first side of the printed circuit board assembly, and the winding winds around the stator iron core. The rotor and the magnet are mounted on the second side of the printed circuit board assembly and spaced apart from the winding. In the embodiments of the present disclosure, the motor has a flat structure, thereby facilitating miniaturization of the shutter device. The embodiments of the present disclosure further provide a shutter device, and a photographing device including the shutter device.

Abstract: Systems and methods are provided for providing stability support. The system may include a movable foundation that moves on a surface, and a base rotatably mounted to the movable foundation. A leveling platform may be adjustably mounted to the base and can pivot around a pivoting axis intersecting the base. A control arm connects the leveling platform and the base, and can effect the pivoting of the leveling platform by adjusting the length of the control arm. An alternative system may include a supporting scaffold that is adjustably connected to a movable foundation by at least three control arms. The at least three control arms can change length such that an angle of the supporting scaffold from the movable foundation changes.

Abstract: A method for identifying an electronic speed control (“ESC”) of multiple ESCs controlled through a bus is provided. The method includes receiving an initial signal transmitted from the bus, and switching to an identification setting mode. The method also includes receiving an instruction signal transmitted by a motor corresponding to the ESC, and setting an identification of the ESC currently receiving the instruction signal with an unoccupied identification value. The method further includes transmitting an identification signal carrying the unoccupied identification value to the bus.

Abstract: Systems and methods are provided for providing stability support. The system may include a movable foundation that moves on a surface, and a base rotatably mounted to the movable foundation. A leveling platform may be adjustably mounted to the base and can pivot around a pivoting axis intersecting the base. A control arm connects the leveling platform and the base, and can effect the pivoting of the leveling platform by adjusting the length of the control arm. An alternative system may include a supporting scaffold that is adjustably connected to a movable foundation by at least three control arms. The at least three control arms can change length such that an angle of the supporting scaffold from the movable foundation changes.