During October 2024, Dariusz Zbyrad developed and integrated a Polish-language Arduino course into the ebookfoundation/free-programming-books repository, focusing on expanding accessible educational resources for Polish-speaking learners. He utilized Markdown for content creation and educational resource development, ensuring the new material adhered to repository standards and maintained consistency with existing resources. Dariusz’s work addressed the need for localized programming content, supporting broader engagement within the open-source education community. The contribution was delivered through a well-documented Git commit, demonstrating effective collaboration and attention to workflow quality. No bugs were reported, reflecting a focused and well-executed approach to content integration and localization.