Abstract: Example methods are provided to improve placement of an adaptor (210,220) to a mobile computing device (100) to measure a test strip (221) coupled to the adaptor (220) with a camera (104) and a screen (108) on a face of the mobile computing device (100). The method may include displaying a light area on a first portion of the screen (108). The first portion may be adjacent to the camera (104). The light area and the camera (104) may be aligned with a key area of the test strip (221) so that the camera (104) is configured to capture an image of the key area. The method may further include providing first guiding information for a user to place the adaptor (210,220) to the mobile computing device (100) according to a position of the light area on the screen (108).

Abstract: A generator generates electricity when the generator is pressed and has a stator, a rotor, a drive shaft, a biasing member and a top cover. The rotor is mounted in the stator and has a central hole with at least one key. The drive shaft is slidably mounted in the central hole in the rotor base and has at least one spiral groove in which the at least one key on the rotor is mounted. The biasing member is mounted between the base and the drive shaft to provide a restitution force to the drive shaft when the drive shaft is pressed down manually. The top cover has a central bore through which the top of the drive shaft non-rotatably extends. Accordingly, movement of the drive shaft causes the rotor to rotate relative to the stator and generate electricity.

Abstract: A generator generates electricity when the generator is pressed and has a stator, a rotor, a drive shaft, a biasing member and a top cover. The rotor is mounted in the stator and has a central hole with at least one key. The drive shaft is slidably mounted in the central hole in the rotor base and has at least one spiral groove in which the at least one key on the rotor is mounted. The biasing member is mounted between the base and the drive shaft to provide a restitution force to the drive shaft when the drive shaft is pressed down manually. The top cover has a central bore through which the top of the drive shaft non-rotatably extends. Accordingly, movement of the drive shaft causes the rotor to rotate relative to the stator and generate electricity.

Abstract: A wheel assembly has a chassis, two electrical contact strips, multiple wheels, multiple optional washers and an electrical power source. The electrical contact strips are made of conductive material and are mounted on the chassis. Each wheel has two rims, two bearings, at least one illuminating device and a transparent tire. Each illuminating device has two electrical leads connected respectively to the bearings. The washers abut respectively the bearings in the wheels and are electrically connected respectively to the electrical contact strips. The electrical power source is electrically connected to the electrical contact strips. Accordingly, the electrical connecting device electrically connects the illuminating devices in all the wheels together, and the illuminating devices in all wheels will simultaneously light.

Abstract: An in-line skate wheel having skew-mounted and self-powered illuminating devices is disclosed. The wheel includes a first and a second anchor joined together creating a chamber in the middle, a rotor held in the chamber, multiple illuminating devices inserted with a skew angle on the rotor, a stator fitted in the rotor, an axle passing through the two coupled anchors and the stator, and a protective covering placed around the rim of the two anchors. The skew-mounted illuminating devices allow the skate wheel to be fitted on in-line skates and skate boards that can only use small wheels. Further, the present design can prevent scratching of the illuminating devices against the ground that would otherwise cause abrasion on the surface of the illuminating devices and attenuate the light given out by the illuminating devices.

Abstract: An in-line skate wheel incorporating transverse-mounted and self-powered illuminating device is disclosed. The wheel includes two mutually coupled anchors, a rotor held between the two coupled anchors, multiple illuminating devices installed in transverse orientation on the rotor, a stator within the rotor but kept apart from the rotor, an axle extending through the two coupled anchors and the stator, and a protective covering placed around the rim of the first and second anchors. The transverse-mounted illuminating devices allow the skate wheel to be fitted on in-line skates and skate boards that can only use small wheels. Further, the present design can prevent scratching of the illuminating devices against the ground to avoid abrasion on the surface of the illuminating devices that would otherwise attenuate the light given out by the illuminating devices.

Abstract: An electrical generator includes a coil, a coil seat and a set of permanent magnets. The coil and the set of permanent magnets are separated from each other. The coil is mounted in the coil seat so that either the coil or the set of permanent magnets can rotate relative to the other. The set of permanent magnets has multiple north poles and south poles arranged alternately. The set of permanent magnets is adjustably positioned relative to the coil seat. The set of permanent magnets is maintained a distance from the coil seat and induces a voltage in the coil in the coil seat when the set of permanent magnets rotates relative to the coil.

Abstract: A generator for a bicycle includes a rotor abutting a wheel of the bicycle. A coil is mounted in the rotor and electrically connected to two bearings that are mounted on the opposite sides of the rotor by two inner wires. A stator has a shaft extending through the two bearings and a permanent magnet sleeved onto the shaft and corresponding to the coil. Two electrical ring connectors are respectively mounted on opposite ends of the shaft and electrically connected to the bearings. A light is mounted on the bicycle and electrically connected to the electrical ring connectors. The coil will rotate with the rotor relative to the stator when the bicycle is in motion and generate electricity that is transmitted to the light, and the light improves the enjoyment and safety of riding the bicycle.

Abstract: A luminous pedal for a bicycle has a body with an I-like frame formed therein. An axle hole is longitudinally defined through the frame. An end cover is assembled at the front end and has a second hole in alignment with the axle hole. An axle has a head extending out from the second hole. A plurality of permanent magnets is circumferentially provided thereon and arranged N-pole by S-pole alternately. A coil seat with a coil is secured in the chamber. The permanent magnets are received in the coil seat. Two luminous plates is respectively secured at the side parts of the body and each have a plurality of luminous elements and electrically connected with the coil by a wire so that when the pedal is operated by a user, current is generated to light the luminous elements.

Abstract: A generator for a bicycle includes a rotor abutting a wheel of the bicycle. A coil is mounted in the rotor and electrically connected to two bearings that are mounted on the opposite sides of the rotor by two inner wires. A stator has a shaft extending through the two bearings and a permanent magnet sleeved onto the shaft and corresponding to the coil. Two electrical ring connectors are respectively mounted on opposite ends of the shaft and electrically connected to the bearings. A light is mounted on the bicycle and electrically connected to the electrical ring connectors. The coil will rotate with the rotor relative to the stator when the bicycle is in motion and generate electricity that is transmitted to the light, and the light improves the enjoyment and safety of riding the bicycle.

Abstract: A pinwheel has a body, multiple lighting devices, a securing base, a securing cap and a generator. Multiple blades extend outward from the body and each has a lighting device mounted on the blade. The securing base and the securing cap are securely attached to the body to receive the generator. The generator has an annular coil seat and an annular permanent magnet. The coil seat is securely mounted between the securing base and the securing cap and electrically connected to two electrodes of the lighting devices. The annular permanent magnet is rotatably mounted between the securing base and the securing cap and in a center of the coil seat. Accordingly, the electrical power will be generated when the body rotates and the lighting devices will light. The appearance of the pinwheel is versatile.

Abstract: A luminous pedal for a bicycle has a body with an I-like frame formed therein. An axle hole is longitudinally defined through the frame. An end cover is assembled at the front end and has a second hole in alignment with the axle hole. An axle has a head extending out from the second hole. A plurality of permanent magnets is circumferentially provided thereon and arranged N-pole by S-pole alternately. A coil seat with a coil is secured in the chamber. The permanent magnets are received in the coil seat. Two luminous plates is respectively secured at the side parts of the body and each have a plurality of luminous elements and electrically connected with the coil by a wire so that when the pedal is operated by a user, current is generated to light the luminous elements.

Abstract: A wheel has two wheel halves, a generator, two bearings and two metal rings. The wheel halves are detachably connected to each other. The generator is composed of an annular coil seat and an annular permanent magnet. The coil seat is securely mounted between the wheel halves and has a winding wound around the coil seat. The permanent magnet is rotatably mounted between the wheel halves. Each bearing is received in one of the wheel halves and electrically connects with one end of the winding. Each ring is securely attached to one of the wheel halves to abut the bearing. Consequently, the coil seat will rotate with the wheel bodies and relative to the permanent magnet and generate electricity. The electricity will be transmitted to a lighting device or a sounding device. The enjoyment of a roller skate or a skateboard with the wheel is improved.