In May 2025, Johny Feng developed two core features for the rsx-utoronto/rsx-rover repository, focusing on embedded systems and robotics using Python. He implemented a utility to safely convert power percentages into SparkMAX CAN payloads, ensuring motor control commands remained within safe operational limits. Johny also established a local testing scaffolding, enabling reliable verification of new commits and streamlining the lifecycle of test artifacts. His work emphasized maintainability and test reliability, laying a solid foundation for future development. While no bugs were fixed during this period, his contributions improved code health and supported rapid, high-quality iteration in subsequent releases.