Instructions

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sudo python3 /home/pi/MultimediaCase/shutdown-function.py &
You can use the following command to run the program in the back-
ground so that the terminal is still available.
You can also add this program to the autostart, so that Raspberry Pi al-
ways automatically calls the script at startup and remains permanently
activated in the background. To do this, open the file rc.local with the
following command:
sudo nano /etc/rc.local
Insert the following line before exit 0. Note that the directory where the
script is located may dier.
python3 /home/pi/MultimediaCase/shutdown-function.py &
exit 0
LED 1 LED 2
LED 3
LED 4
2.3 RGB-LEDs
The case has 4 RGB LEDs on each corner. The WS2812B LEDs are
connected in a row and can be color adjusted with GPIO 18. This pin is
connected to the PWM module of the Raspberry Pi. It is mandatory to use
time critical signals (PWM) for WS2812B LEDs, otherwise disturbances
may occur.
To set up the LEDs we recommend Hyperion. Hyperion is an open source
ambient light implementation which is compatible with many platforms.
It also oers you the possibility to add more LEDs to add a backlight to
your monitor and also allows you to play eects on your LEDs. You don't
need any further knowledge about the data processing of LEDs.
Data processing of the LEDs
Because the WS2812B LEDs are arranged in a row / string, the
signal passes through all the LEDs one aer the other. Each LED
takes one data package. Four data packages must always be sent so
that all LEDs receive one data packet. These data packages contain va-
lues in GRB color space.
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