Raspberry-fan

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INSTALL

1. Download the folder and open Raspberry-fan/src/fan.c.

2. Modify the route where specified with the one of your folder (Write "pwd" on shell inside the folder to meet it).

3. Write "make" (without the quotes) on Raspberry-fan/ (you will need gcc compiler installed).

4. Write on shell: sudo nano /etc/systemd/system/fan.service

5. Paste and save this:

    [Unit]
    Description=Turn on/off the fan depending on the temperature.
   
    [Service]
    Type=simple
    ExecStart=EDIT-WITH-FULL-ROUTE-TO-YOUR-EXECUTABLE* start
    Restart=Always
    TimeoutStopSec=300
   
    [Install]
    WantedBy=multi-user.target
   

*Example: ExecStart=/home/osmc/Propios/Raspberry-fan/bin/raspberry-fan start

6. Write: sudo chmod 755 /etc/systemd/system/ventilador.service

7. Write: sudo systemctl enable fan.service

If you want to make sure it is running, write: ps aux | grep "Raspberry-fan"

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WHAT YOU NEED (HARDWARE)

Components

1. One fan. IMPORTANT: Following components are for a 5v 0,2A fan.

2. One NPN 2222a transistor.

3. One 680 ohms OR one 560 ohms resistance.

How to plug them

1. Connect positive pole of the fan to 5v Raspberry pin (pin 2 or 4 in BOARD Numbering)

2. Connect ground of the fan to collector of transistor

3. Connect base of transistor to 680 or 560 ohms resistance.

4. Connect resistance to pin 7 of raspberry pi (board). [GPIO4]

5. Connect emitter to GND of your raspberry.

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If you need any help, contact me: selutario@gmail.com