Intelligent smoking device based on STC8H microcontroller

I. Project Introduction
This project is a low-cost, small-sized, portable, and highly efficient intelligent smoke extractor based on the STC8H8K64U microcontroller. It effectively solves
the risk of inhaling PM2.5 particles such as fumes and rosin into the lungs during soldering work, thus effectively protecting human life and creating a comfortable soldering environment for electronic components.
The project is divided into four functional parts: ① Fan smoke extraction; ② Temperature and humidity display; ③ Onboard lighting; ④ Rechargeable.
These four parts can well meet our daily personal soldering needs.
 
II. Material Preparation
1. 30*40mm 1500mAh lithium battery, Taobao price ¥13.7 2.
6010 5V USB mini fan, Taobao price ¥3.5
3. 6cm fan guard, Taobao price ¥0.7
4. LED portable USB night light, Taobao price ¥2.4
5. DHT11 temperature and humidity module, Taobao price ¥3
6. M3*9 binding posts, Taobao price ¥3.3
7. Capacitors, resistors, digital tubes, LED beads, STC8H, etc. (all can be seen in the schematic diagram; estimated cost not exceeding ¥30).
 
III. Physical Demonstration:
1. Internal components
; 2. First interface (default no display)
; 3. Second interface (temperature display)
; 4. Second interface (humidity display)
; 5. Third interface (battery voltage display).
 
IV. Project Limitations:
Due to the presence of a fan and high-power LEDs, insufficient power supply may occur during actual use. This is because the PW5100 5V voltage regulator chip is insufficient.
Replacement with a higher current output chip is welcome.
 
The complete project code is attached below for learning and exchange purposes only!