Manoj contributed to the zephyrproject-rtos/zephyr-testing repository by focusing on targeted bug fixes that improved sensor accuracy and board configuration reliability. He addressed a sign-extension issue in the TSL2591 sensor driver by casting variables to uint32_t in C, ensuring correct light intensity calculations for embedded systems. Manoj also corrected documentation and device tree typos in QDEC overlays, enhancing clarity and maintainability across multiple boards. His work involved device driver development, device tree updates, and thorough testing, resulting in improved data integrity and streamlined onboarding for future developers. These contributions deepened the reliability and usability of the Zephyr testing infrastructure.