A small fan with a phone holder built into its base. You’ll need to prepare: three M2×8 socket-head screws and three M2 hex nuts, along with two M4×10 socket-head screws and M4 hex nuts; approximately 200 mm of red-and-black wire; and the following components for connecting the speed controller, switch, and motor: Speed controller model: 5A 3–35V speed regulator (with self-resetting fuse) w: 【**】https://m.tb.cn/h.ftzho8D?tk=TDDl2mjBeuY “PWM DC motor speed controller, 3V–35V adjustable-speed switch board, LED dimming, 5A switch function, speed regulation module” Click the link to open directly. Switch model: 16 mm, 3–6 V, self-locking—press to lock w: 【**】https://m.tb.cn/h.fuD6m7U?tk=zFyH2mjBGjY “12/16/19/22 mm metal push-button switch, self-resetting, momentary, round-shaped, with light, waterproof, power‑on self-locking button” Click the link to open directly. Motor model: RF300 with wiring. Note: the shaft length should ideally be around 10 mm w: 【**】https://m.tb.cn/h.ftzStH3?tk=Gcyx2mjA0ST “Trendy neck‑hanging fan, RF300 solar‑powered motor, 3 V, 3.7 V, 6 V micro‑DC motor, U** student experiment project” Click the link to open directly. If you have any questions, feel free to contact me via Douyin (ID: WangZai3DP, name: WangZai·3D Printing). Commercial use is strictly prohibited without my explicit permission!!!