Handheld Fan

1. Design and Structure: The device features a rounded-square portable housing, with a 3D-printed modular shell. A front grille provides both airflow guidance and safety protection, while pre‑designed mounting points accommodate the motor, battery, and switch. The assembly is neat and compact, making it easy to hold or place flat on a desk.

   

2. Hardware Configuration: Equipped with a small DC motor and a three‑blade fan, powered by an 18650 lithium battery and controlled via a toggle power switch. The circuitry is straightforward, allowing users to independently wire and assemble the components—perfect for DIY enthusiasts looking to build their own projects.

   

    

3. Functional Applications: Powered by the motor-driven fan, this handheld device generates airflow to provide cooling. Its compact and portable design makes it ideal for desktop use or temporary outdoor heat relief. Additionally, it serves as an engaging STEM project, offering hands-on opportunities to learn about motor mechanics, basic circuitry, and 3D printing modeling and assembly techniques.