raspberry-pi-fan

How I wired up my fan to my raspberry pi.

Circuit

The circuit was created using Circuit Diagram.

In the circuit, the fan was replaced with a buzzer.

Here's how my finished build looks:

The wire coloring matches that of the circuit.

Open a terminal on the Pi
Enter sudo raspi-config
Go to the fourth option 4 Performance Options
Go to the next fourth option P4 Fan
Select <Yes> for the option Would you like to enable fan temperature control?
Enter your GPIO pin, in this case, 2
Select <Ok>
Enter the temperature at which your fan will turn on. NOTE: The fan will only turn off if the temperature is below 10°C of the value you entered.
Select <Ok>
Confirm the following: The fan on GPIO <your pin> is enabled and will turn on at <your temperature> degrees Celsius with <Ok>
Select <Finish> to save
Choose what you want when you see Would you like to reboot now?

Raspberry Pi
5-volt fan (in this example with female connectors)
Breadboard
Jumper cables:
- 1 male-male (breadboard-fan)
- 3 female-male (2 Pi-breadboard) (1 Pi-fan)
1k resistor
1 NPN transistor

To get the temperature up we will use a tool called stress.

Install it:

sudo apt-get install stress

Use it:

stress --cpu 4

Stop it: Hit CTRL+C

Measure the temperature:

vcgencmd measure_temp

Watch the temperature (measure every second):

watch -n 1 -d vcgencmd measure_temp

Stop watching: Hit CTRL+C