João Cacador focused on improving simulation accuracy in the ArduPilot/ardupilot repository by addressing a critical issue in SITL servo handling. He implemented a targeted bug fix in C++ that assigns a default trim value of 1500 to servos before angle filtering when a servo is disabled, preventing errors and enhancing simulation fidelity. His work required a solid understanding of simulation systems and unit testing to ensure robust behavior under edge cases. Although the scope was limited to a single bug fix during the month, João’s contribution demonstrated careful attention to simulation detail and effective use of C++ development practices.