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WITRN W96Pro Portable Fan Review and Teardown Analysis
Reviews & Teardown

WITRN W96Pro Portable Fan Review and Teardown Analysis

The teardown and review of the WITRN W96Pro Bluetooth fan analyzes its circuitry, components, and performance. Key findings: high-quality parts with generous margins, 18W bidirectional USB-C fast charging, a 4800mAh 21700 cell, sinusoidal-drive BLDC motor, and a feature-rich companion app. Measured runtime is about 8 hours at 35% speed. A fast-charge output bug was resolved by switching the Type-C role to DRP in expert mode.

发布于 2026-08-27
Gongtian F95D Mini Fan Teardown & Analysis — Circuit Analysis of a Portable Rechargeable Fan
Reviews & Teardown

Gongtian F95D Mini Fan Teardown & Analysis — Circuit Analysis of a Portable Rechargeable Fan

A teardown and circuit analysis of the Gongtian F95D portable mini fan reveals a 4-speed design with 18W fast charging, a 5000mAh 21700 battery, and USB-C power-bank output. Core components include the IP5353 charge-management SoC, an MCU, MOSFET PWM speed control, and protection circuitry. Measured speeds range from 1565 to 4695 RPM with 19.9kHz PWM.

发布于 2026-08-14
DJI Mini 2 Drone Teardown Analysis
Reviews & Teardown

DJI Mini 2 Drone Teardown Analysis

这篇摘要总结了作者对使用四年的DJI Mini 2无人机进行拆解和问题分析的全过程，字数控制在200字以内。 --- 一篇关于大疆Mini 2无人机的拆解分析文章。作者因无人机5.8GHz图传信号变弱，在过保后决定自行拆机维修。文章详细记录了拆解步骤，并对关键芯片进行了技术分析：主控采用NXP的i.MX RT1064处理器；图像处理由安霸Ambarella H22芯片负责；图传系统核心为DJI定制的S1系列芯片，并由QPF4205和QPF4550分别放大2.4GHz和5.8GHz信号（怀疑故障源于后者）；此外，还解析了电机驱动、电源管理及ToF测距等模块的芯片配置与功能。此次拆解旨在排查并更换故障的5.8G功放芯片，修复图传问题。

发布于 2025-10-23

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