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Abstract
This project presents the development of a lightweight and portable wind-powered generator designed to provide off-grid charging for small electronic devices in outdoor or emergency environments. The system includes a compact wind turbine and a manual hand-crank mechanism to ensure power generation even when wind is limited. A 3D-printed planetary gear system connects the turbine to a DC generator, enabling effective energy capture at lower wind speeds. Power is regulated through a two-stage system consisting of a boost converter and a buck converter, delivering a consistent 5V USB output for user devices. The overall unit weighs approximately three pounds and is designed for simple field assembly and weather resistance. Testing showed that the system begins generating power at wind speeds with output voltages consistently 5.0V. Comparative blade testing revealed that curved blades offer improved performance and faster startup in low-wind conditions. The final design supports outdoor recreation, disaster relief, and remote work by providing a reliable, renewable alternative to traditional battery-based or solar-only solutions.