Abstract: A dropper post assembly includes a lower tube and an upper tube slidably mounted to the lower tube. The assembly includes a motor with a motor shaft that rotates bi-directionally. The assembly also includes a lead screw that is directly or indirectly mounted to the motor shaft such that the lead screw rotates in unison with the motor shaft. The assembly also includes a lead screw nut threaded onto the lead screw and mounted within the upper tube such that the lead screw nut is unable to rotate relative to the upper tube. The assembly further includes a lead screw sheath configured to receive at least a portion of the lead screw that extends past an upper end of the lead screw nut.

Abstract: A battery boost converter system for a bicycle includes a bicycle frame and a motor mounted to the bicycle frame. The system also includes a battery mounted to the bicycle frame and configured to provide power to the motor. The system also includes a boost converter configured to receive a first output signal from the battery and to provide a second output signal to the motor. The boost converter is also configured to determine, based on an operating condition, whether to boost a voltage of the first output signal such that the second output signal has an increased voltage.

Abstract: A tire pressure monitor includes a printed circuit board (PCB) and a sealed pressure chamber mounted to the PCB. The tire pressure monitor also includes a piston mounted adjacent to the sealed pressure chamber. The piston is configured to contact the sealed pressure chamber in response to an applied pressure. The tire pressure monitor also includes a liquid within the sealed pressure chamber. Translation of the piston causes the liquid to apply pressure to a pressure sensor. The pressure sensor is mounted within the sealed pressure chamber, and is configured to detect the applied pressure.

Abstract: A dropper post assembly includes a lower tube and an upper tube slidably mounted to the lower tube. The assembly includes a motor with a motor shaft that rotates bi-directionally. The assembly also includes a lead screw that is directly or indirectly mounted to the motor shaft such that the lead screw rotates in unison with the motor shaft. The assembly also includes a lead screw nut threaded onto the lead screw and mounted within the upper tube such that the lead screw nut is unable to rotate relative to the upper tube. The assembly further includes a lead screw sheath configured to receive at least a portion of the lead screw that extends past an upper end of the lead screw nut.

Abstract: A tire pressure monitor includes a printed circuit board (PCB) and a sealed pressure chamber mounted to the PCB. The tire pressure monitor also includes a piston mounted adjacent to the sealed pressure chamber. The piston is configured to contact the sealed pressure chamber in response to an applied pressure. The tire pressure monitor also includes a liquid within the sealed pressure chamber. Translation of the piston causes the liquid to apply pressure to a pressure sensor. The pressure sensor is mounted within the sealed pressure chamber, and is configured to detect the applied pressure.