Ausgabe 18.01.2017
Copyright by Joy-IT
21
3
Arcade-GameStation
5. Expert chapter
Set up a light-show configuration on your own
The mounted 8mm RGB-LEDs contain a WS2812 chipset and are connected in series.
The Raspberry Pis PWM output generates the needed data sequence on GPIO-Port 12
which are send to the strip and forwarded to every single LED.
The creation of this code, and also the control, is provided by the rpi_ws281x library by
jgraff (
https://github.com/jgarff/rpi_ws281x
You can change our preinstalled lightshow by your wishes and ideas.
The Python-script-file, which is executd automatically at every startup (with /etc/
rc.local) is stored here:
/home/pi/ArcadeGamestationApps/RGBLedLightshow/RGBLedLightshow.py
Assign Button-Control-Assignment
As mentioned earlier, the arcade-buttons are translated by the software to a keyboard-
input.
The software for translating is called GPioneer and is written by mholgatem (accessible
here:
https://github.com/mholgatem/gpioneer
If you want to change the button-assignment, you can do this on any computer by
entering the IP-Address of your Arcade-Gamestation in your browser.
A website will open up which allows you to configure every button.
It also allows you to use multiple GPIO-PINs to assign a button-combination.
Even the transfer of Linux-Systemcommands is possible.
Please note that the used PIN-Numbers comply to the real physical numbering (e.g.:
GPIO12 -> Nr. 32).
