During two months contributing to the hoodong/2025-2-Sensor repository, Sung Siwon focused on enhancing technical documentation using Markdown, with a strong emphasis on clarity and maintainability. Siwon delivered comprehensive updates covering infrared camera applications, BLDC motor Hall IC usage, and industrial ratio pyrometry, providing detailed descriptions, practical use cases, and procurement guidance. The work improved onboarding and cross-team collaboration by refining document structure and readability, while maintaining disciplined version control practices. By addressing both content accuracy and formatting, Siwon’s documentation efforts reduced support overhead and facilitated future contributions, demonstrating depth in technical writing and documentation management within engineering teams.