Simple Generator

Summary: A custom-designed hand-crank generator built around the principles of electromagnetic induction. I fully designed, modeled, iterated, 3D-printed, assembled, and tested the device myself. The generator uses twelve magnet-wire coils mounted around a circular chassis and a rotating magnetic core at the center. When spun with a drill, it produces approximately 50 mA at 20 mV.

Skills Used: Fusion 360 CAD Modeling • 3D Printing • Electrical Continuity Testing • Oscilloscope Measurement • Prototyping & Iteration

Project overview: I built this project to apply my understanding of electromagnetic induction while pushing my CAD modeling skills to create parts that interface precisely with real-world components like magnets, wire coils, and bearings. Inspired by a large-scale wooden alternator on otherpower.com, I created my own fully custom 3D model to accommodate the specific magnets and geometry I was working with. Along the way, I had to learn detailed design considerations—such as coil winding direction, whether to connect coils in series or parallel, and how to maximize flux changes through the coils. This project gave me hands-on experience with the full engineering process, from concept and CAD modeling to fabrication, assembly, and electrical testing.