Developed a Flight Controller Hardware-in-the-Loop (HITL) Simulation Interface for the UWARG/common repository, enabling realistic hardware-in-the-loop testing with position and camera emulation. Leveraging Python and DroneKit, the work focused on simulating embedded flight control systems and integrating MAVLink communication to closely mirror actual hardware behavior. The implementation included comprehensive unit tests to ensure reliability and maintainability, as well as updates to project dependencies to enhance simulation stability. This approach reduced integration risk and accelerated the validation process for flight software, supporting robust simulation-based development and improving the overall workflow for testing and verifying flight control algorithms.