During August 2025, this developer delivered LED control support for the MCP-based 立创训练营 board in the 78/xiaozhi-sf32 repository, focusing on embedded systems and hardware control using C++. They introduced conditional compilation to enable programmatic LED management for the new board type, centralizing control logic behind compile-time feature flags. This approach improved build safety and maintainability while enabling automated status indicators on training hardware, reducing the need for manual debugging. The work laid a foundation for future hardware integrations and faster prototyping, with all changes documented for traceability. No major bugs were reported, reflecting a focused and robust implementation.