All this starts with the fact that I bought a 12V-120mm * 120mm chassis fan one day.

I don't know why I bought it, even I didn't pass the electricity ~!

I think one day I can make him something good.

As a result, this day has come. I want to be a beautiful fan!

Then power on and try the wind... Okay, I didn't notice the word "ultra-quiet" on his label... The 1000-turn fan is really quiet... but there is really no wind... there is no wind at all 
then the more I thought about it, the more angry I became. I simply bought a 2600-to-chassis fan with PWM speed regulation.

"I have to be a small fan!"

......

Anyway, I did it anyway ~

• I call him Cyber Fan, in fact he is still the style of peak power ~ ~
• contains a SFT-1 intelligent terminal: can display the current mode/temperature/humidity/fan power in real time
• there are two modes: (press the touch button on the terminal to switch)
  • AUTO mode: default power-on mode. In this mode, the fan will adjust its speed according to the ambient temperature information (the fan will not be started below 18 degrees Celsius, and the power will be 100% above 30 degrees Celsius)
  • WELD mode: welding dedicated mode, this mode, the fan will lock 95% power, at this time, you need manual change the direction of the fan (yes, change it manually, originally I wanted to reverse the motor, but the computer chassis fan did not support it, and then the scheme of rotating the fan outer frame was not friendly to the reengraving person and gave up). at this time, the fan became a ventilation device, and the welding odor could be well removed by visual inspection at a distance of 12cm! (The welding mode lasts up to 30 minutes, it will automatically switch to AUTO mode, and you can switch back again)
• to tell the truth, it may be slightly difficult to re-engrave, slightly. But I don't think it's difficult to beat the real big brothers ha ha ha ha ha ha ha
• for the code part, please see [Document 1 Code Generation Part]]
• please see [Document 2 Connection Mode] for connection mode]
• material requirements:
  • need a 12v 120*120mm computer case fan (need 4-wire speed regulation version, strongly recommend 2600rpm or more, otherwise you will feel angry)
  • requires a 12v 3-way output power supply module
  • requires 4 6mm * 2mm round magnets
  • need a 0.96 inch OLED screen
  • requires ESP32 C3 standard microcontroller
  • DHT11 temperature and humidity sensor required
  • requires a 8050 triode
  • requires a touch switch
  • need a number of mother-to-mother DuPont lines.
  • One 220 ohm resistor (for triode base)
  • A 12V1.5-2A power adapter

what are you waiting for, big brothers? Hurry up!