Multifunctional desktop mini fan

In this sweltering summer, while studying or working:
 
[Fan Function]
A small fan on the desktop, wouldn't it be cooler?
 
I originally planned to use an S8050 NPN transistor to drive it, but it didn't work; the current seemed too low.
For now, I'll use the USB-A connection.
 
 
[Screen Display]
Still hot?
Through the ESP8266, I can view the A-share index and Bilibili follower count in real time on the 1.8-inch screen.
Doesn't that feel much cooler?
 
The screen normally displays the date and time, temperature (DS18b20), illuminance (photoresistor), and other information at low brightness.
Pressing any key toggles the display menu.
 
[Night Light Function]
After a long day, turning on the night light function at night provides just the right amount of dim light.
It automatically turns off at 6 AM to save power.
 
Using an S8050 transistor to drive 5730 SMD LEDs, the brightness is just right when the casing is closed.
 
[Timer Reminder]
A temporary reminder function: 30 minutes. After this game, I'll go study.
 
Press the up button once to add 5 minutes, and the down button to subtract 5 minutes. Confirm to start the timer.
When the time is up, the buzzer will sound.
 
[Alarm Function]
It will ring promptly at 8:00 AM the next morning, ensuring you don't miss class or work. Go Palu!