Software I use on the PiFan
Do you want to display Fahrenheit instead of Celsius? Please checkout the fahrenheit branch (on Pi up to Pi3B)
Please also checkout the Pi hardware compatibility list below
Be advised: For this guide, the files will be checked out into
/home/pi/pifan. If you choose to checkout to another location, please
adjust the paths in the installation commands and the scripts accordingly.
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install nginx-light supervisor git build-essential python-dev python-pip
service nginx stop
service supervisor stop
git clone https://github.com/jeroenpeters1986/piFan.git /home/pi/pifan
mkdir -p /home/pi/.config/autostart/
cp /home/pi/pifan/config/AutoChromium.desktop /home/pi/.config/autostart/AutoChromium.desktop
chmod +x /home/pi/pifan/hub-ctrl
sudo pip install -r /home/pi/pifan/config/requirements.txt
git clone https://github.com/adafruit/Adafruit_Python_DHT.git /tmp/dht
cd /tmp/dht
sudo python setup.py install
sudo rm /etc/nginx/sites-enabled/default
sudo cp /home/pi/pifan/config/nginx-sites-enabled-default /etc/nginx/sites-enabled/default
sudo cp /home/pi/pifan/config/supervisor-falcontrol.conf /etc/supervisor/conf.d/falcontrol.conf
sudo cp /home/pi/pifan/config/supervisor-usb_switch.conf /etc/supervisor/conf.d/usb_switch.conf
sudo cp /home/pi/pifan/config/supervisor-tempreader.conf /etc/supervisor/conf.d/tempreader.conf
sudo reboot
After the reboot, Chromium should start and it should present you with the touchinterface
If you don't want to reboot and start Chromium yourself, you should run service supervisor start; service nginx start
sudo apt-get remove cups-bsd cups-client cups-common scratch greenfoot bluej sense-emu-tools sense-hat claws-mail libreoffice-base
sudo apt-get remove --purge libreoffice*
Offcourse you need a Raspberry Pi. There are multiple Pi models, not every Pi would work.
Thanks to @koenvervloesem from the MagPi NL I can provide you this overview:
| Model | Suitable for PiFan | Comment |
|---|---|---|
| Pi Zero and Pi Zero W | No | These models don't have a USB hub |
| Pi 1 Model B | No | The USB ports for this model are not controllable |
| Pi 1 Model B+ Pi 2 Pi 3B | Yes | These all work without modifications |
| Pi 3B+ | Yes | Since 2018-10-22 it works on the master branch |
For the temperature readings I chose the DHT22 from Adafruit. This sensor is pretty accurate. You can also choose to use the DHT11, it's a little bit cheaper but less accurate. I have bought the one already attached to a chip.
The touch screen that has been used for this project is a 3,5" capacative touch display. It comes with a cool acrylic case. This case also takes care of supporting the display. You can find them on eBay. At the time of writing, you could buy this one
Btw: Please let me know when the link is dead.
Here's the scheme of the wiring. The display is just for illustration purposes
to see which pins are allocated by the action touchscreen. Use the image to
hook up the DHT22 temprature sensor.
- The file
hub-ctrlis a compiled version of the sourcecode of https://github.com/codazoda/hub-ctrl.c