[Resource Download] The download address is as follows:
https://docs.qq.com/doc/DTlRSd01BZXNpRUxl
*Program project file ------Open with Keil5 software. You can download and install the
*circuit diagram project file for free by searching on Baidu ------open with AltiumDesigner software. Baidu search can download and install for free
System work description:
STM32F103C8T6 MCU is used to collect temperature and humidity, formaldehyde, pm2.5, smoke concentration information, and display the information on the OLED screen. The alarm value of smoke and formaldehyde concentration can be set by pressing the button. When the detected concentration is greater than the alarm value When, the buzzer alarms.
