Contributed to the zephyrproject-rtos/zephyr repository by developing enhancements for the sensor subsystem and shell interface, focusing on embedded and real-time systems. Implemented timer-based triggers in the sensor stream shell, enabling more flexible command scheduling through SENSOR_TRIG_TIMER support. Refactored the sensing subsystem to relocate sensor polling from interrupt service routines to a dedicated runtime thread, which improved system stability and responsiveness while reducing interrupt load. These changes streamlined sensor management and increased the determinism and maintainability of the sensing path. The work was carried out using C programming and device driver development skills, emphasizing robust embedded software design.