Abstract: Some embodiments can include a device for detecting heart rate. In a number of embodiments, the device can comprise at least one capacitive displacement sensor coupled to a strap. In many embodiments, the at least one capacitive displacement sensor can comprise two electrodes. In some embodiments, the two electrodes can comprise an outer transmitting electrode and an inner receiving electrode. In various embodiments, the at least one capacitive displacement sensor can detect a pulse by producing a signal associated with a distance change between a skin of a wearer of the device and the at least one capacitive displacement sensor. Other embodiments of related apparatuses, methods and systems are also provided.

Abstract: A wearable device, which comprises a wristband, an electronic module and a connector. The wristband comprises a housing and a band. The housing has a first end, a second end, and an accommodating space. The band has a first end extending from the first end of the housing, and a free second end opposite to the first end of the band. The electronic module disposes within the accommodating space. The connector disposes either at the second end of the housing, or at a first end of the electronic module that is closer to the second end of the housing than the first end of the housing, wherein the free second end of the band is insertable through or into the connector. Wherein there is free of any band between the second end of the housing and the connector and between the first end of the electronic module and the connector.

Abstract: A wearable device, which comprises a wristband, an electronic module and a connector. The wristband comprises a housing and a band. The housing has a first end, a second end, and an accommodating space. The band has a first end extending from the first end of the housing, and a free second end opposite to the first end of the band. The electronic module disposes within the accommodating space. The connector disposes either at the second end of the housing, or at a first end of the electronic module that is closer to the second end of the housing than the first end of the housing, wherein the free second end of the band is insertable through or into the connector. Wherein there is free of any band between the second end of the housing and the connector and between the first end of the electronic module and the connector.

Abstract: Consolidated power tips allow a power adaptor to be connected to disparately sized input ports of electronic devices. The consolidated power tips may be sized to balance insertion and pull-out forces for the disparately sized input ports. Deformable members may be added to the consolidated power tips for more desirable insertion and pull-out forces and improved electrical contact. For input ports with different electrical requirements, a mode selector may be added to the consolidated power tip to select between the electrical requirements of the different input ports.

Abstract: A golf learning aid is directed to improving an individual's golf swing by monitoring spine angle during a golf swing and alerting the individual when the spine angle varies outside of a predetermined maximum spine angle range during the swing. The system includes a device affixed to a top portion of a cap worn by the user, and an earpiece affixed to the device for playing an audible alert. The device employs a microcontroller, a tilt sensor and a system of buffering and filtering to provide real-time feedback on a user's spine angle during the swing. It is an additional feature of the system that the microcontroller generates an audible and repetitive tone as a metronome cadence when the microcontroller detects that the user is set up for a golf swing. The metronome cadence is provided to improve one's rhythm and timing in the golf swing and golf swing routine.