Over a two-month period, Woon Jae Rhee focused on expanding and refining technical documentation for the hoodong/2025-2-Sensor repository, targeting improved onboarding and knowledge transfer for sensor technologies. Using Markdown and technical writing skills, he overhauled documentation for phototransistor, thermopile, AMR, and broadband pyrometer sensors, adding detailed operating principles, datasheet analyses, and practical application examples. His work emphasized clarity, structured organization, and maintainability, addressing business needs for clearer specifications and cross-team alignment. While no bugs were fixed, the depth of documentation updates provided a robust, maintainable knowledge base that supports both developer productivity and customer support initiatives.