You need to watch this video until its end. for understanding the video.
Step 1: CPU Cooling Fan
You need 5, 12V CPU Cooling Fans
you can buy CPU fan it from here: https://ouo.io/nQ9WWu
Step 2: Fan Connection
Connect all CPU Fan's in Parallel.
Step 3: You Will Need a USB Cable for Power
You can use old Micro USB to USB Cable
Step 4: Cut the Cable
Cut the cable and after tha you will need only two wires
1. Black [GND]
2. Red [+5v]
Step 5: Connections
Connect the +ve of the USB to the +ve of the fan
and -ve to the -ve of the fan.
Step 6: Measure the Fan Voltage.
I have connected the USB to the power bank and then I measured the voltage.
it is about 4.7 v not 12v
Step 7: So, We Need Step Up Boost Converter
It will increase the voltage to our need Voltage 12V
Step Up Boost Converter: https://ouo.io/0hX1q
Step 8: Boost Converter Connection
Connect the vin +ve and -ve to the USB cable
and also connect outgoing wires.
Step 9: Voltage Adjustment
Now Rotate the Potentiometer of the Boost converter And Take it to 12v
Step 10: Connection With Fans
Now Connect boost converter outgoing wires to the fan.
Step 11: You Can See the Fan Is Rotating at Its Max Speed.
it will cool down your pc faster than you buy online for cooling pad
Step 12: Ready for Using
Hope You Understand What I am saying.
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