Enable PWN Fan Control

Step 1.

Login to your Raspberry Pi via Putty

Step 2.

Edit the config.txt file

sudo nano /boot/config.txt

Step 3.

Add the following lines to the end of your config.txt file:

#Enable PWM Fan Control
dtoverlay=gpio-fan,gpiopin=14,temp=60000

Step 4.

Save your changes and Reboot

sudo reboot