Handheld high-powered hair dryer PRO

======WARNING======
The BOM (Bill of Materials) should be based on the schematic diagram! Do not use the BOM
in the project description directly! The BOM should be based on the schematic diagram! Do not use the BOM in the project description directly!
The BOM should be based on the schematic diagram! Do not use the BOM in the project description directly!
Please follow the CC-BY-NC-SA 3.0 open-source license. This project is for learning and research purposes only and is prohibited for commercial use.
Electronics exchange group: 232586710, 345731137
Demo video: https://www.bilibili.com/video/BV1WW4y1N7nY/
Speed ​​control integrated switch, 4s battery powered, the fan's full load current can reach over 41A,
so a high discharge rate power battery is required,
such as Samsung 40T, Samsung 50S, Lishen LA, Changhong Sanjie 40S, etc.
 
Appearance appreciation:
 
 
 
A voltmeter is located on the side, allowing real-time monitoring of the battery voltage.
 
The ice-blue ambient lighting
 
fan system uses a 64mm 12-blade ducted motor from XFly (click the text to go to the purchase link).
 
It requires three boards: a lithium battery charging board, a lithium battery protection board, and a brushless ESC speed control board, as well as a 0.28-inch voltmeter.
Charging board: https://oshwhub.com/wzw666/2368mini
Protection board: https://oshwhub.com/wzw666/bm3451pro
 
Four-series, two-parallel battery packs; the MOSFETs on the protection board need heatsinks for heat dissipation. This image shows
 
a pre-soldered ESC (LANRC 45A model racing drone single-unit ESC) with
 
a circular light panel
 
for illumination.
 
It's a rotary switch integrated brushless ESC PWM signal speed control board,
modified from the 712897A brushless ESC PWM signal generator.
Original project link: https://oshwhub.com/712897a/stc8g1k08a_pwm
Download Options
Note: The IRC frequency must be selected as 12MHz
. There is no automatic reset circuit; after clicking download, the power supply must be disconnected (it is recommended to unplug GND and then reconnect it). Download will only begin after the chip is powered on again.