Portable violent fan

FSF-1A high energy fan

FSF-1A：Fursuit_Fan-1Advance

Project introduction:

As we all know, people who are alive will have fever, and once we wear heavy clothes (including but not limited to: tactical clothing, fire clothing, animal clothing), these clothes can play a very good thermal insulation effect, so that the heat can not be distributed, the rapid rise in body temperature, resulting in heat stroke, confusion and a series of effects, so I conceived such a product.

The charging chip uses IP2365, which is cheap (6 yuan free shipping) and large in power. The parameter sheet claims that the maximum charging current of 3s is 2.5A, but the actual measured charging current is about 3.2A. The reverse virtual standard is really too conscientious.

But 2365 does not support PD. At this time, CH224K is needed for deception. It only costs 2 yuan and free shipping.

I have tried using self-designed PT6303 and CM1033 protection boards for battery protection boards, but they all failed, so I used Taobao's finished products to reduce the risk of explosion.

Hardware block diagram.

The open source information includes:

1. A PCB design source file of the product is provided in the format of LCEDA professional version.

2. Shell STL file.

3.Arduino project file of ATTiny13A program.

4. Purchase links for each component.

Features:

• Charging is based on IP2365, and the measured maximum charging power is 40W.
• PD deception is based on CH224K, this project requires deception of 20V.
• ATTiny13A speed control, ultra-low price and supports Arduino, minimalist BOM.
• EC11 encoder input, better user experience.
• Ultra-thick 3D printed shell, more resistant to drops. You can print it yourself for free.
• The body is thicker and shorter. Bigger knobs make it feel better to use.
• Finished product protection board to reduce the risk of explosion.
• The battery adopts 3S Yiwei 3300mah-3c.

Bilibili video

Tail nozzle simulation photo (the fan is based on the nominal data of Taobao 0.6a 4028 axial flow fan)

Rendering renderings

Picture:

The original verification board has the abandoned NE555 speed regulation scheme on the right side.

The measured power is close to 40W.

Based on room temperature 25℃, the temperature of the chip top cover after running for 30 minutes.

Updated on 2022.11.25.

(This is my first time participating and I don’t even know how to write a poster)

Updated on 2022.12.21

Youth Science and Technology Innovation Competition actually won the second place in Shenzhen City.

Conclusion:

This project was launched on February 9, 2022, and spanned the high school entrance examination, from sw6106 with 3p battery to a single dw01 protected 3s battery pack, from not knowing solidworks to drawing the first model, from never seeing a 3D printer to printing failure and then to printing To create a satisfactory shell, from not daring to play with the battery to welding the protective plate with ease, these first times all witnessed my growth. When I decided to open source this project that was originally intended for commercial use, what I thought of was no longer the money gained from the profit, but the warriors like Alexandra Elbakyan who fought for human progress. As an ordinary middle school student, I cannot become a great or accomplished person, but I am willing to open up the fruits of my labor and let us make progress together.