Developed a hopper subsystem simulation for the SciBorgs/Reefscape-2025 repository, enabling hardware-free development and validation workflows. The work centered on implementing realistic hopper dynamics using Java, with DCMotorSim and LinearSystemId to accurately model system behavior. New configuration constants were introduced to facilitate parameter exploration and control tuning, supporting more robust and flexible simulation scenarios. A deterministic beambreak sensor, currently hardcoded for repeatable testing, was included to ensure stable results during early development. This foundational simulation established a core baseline for future enhancements, laying the groundwork for more advanced sensor modeling and comprehensive subsystem testing without physical hardware dependencies.