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(LED) Matrix Control Software, supports various Hardware, Keywords: LED Matrix, OSC, Realtime, VJ, Arduino, Teensy, RPI

www.pixelinvaders.ch

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PixelController

PixelController - a matrix control project by Michael Vogt , (c) 2010-2013. The main goal of this application is to create an easy to use matrix controller software which creates stunning visuals!

Primary Website: http://www.pixelinvaders.ch

My Blog: http://www.neophob.com

Facebook: https://www.facebook.com/PixelInvaders

You can download PixelController on Google Code: http://code.google.com/p/pixelcontroller/downloads/

HOWTO USE PIXELCONTROLLER

Prerequisite:

  • Java Runtime, v1.6+

You can start PixelController with an integrated GUI by double click on PixelController.jar or you can start the console version (for example on a Raspberry PI) of PixelController by executing the console\PixelController.sh (OSX/Linux) or console\PixelController.cmd (Windows) Script.

By default PixelController has no configured output device (= no configured LED Matrix). To change that open the data/config.properties configuration file and make the necessary changes, lines starting with # are ignored. The most important parts are:

output.resolution.x=8
output.resolution.y=8

which defines the resolution of your matrix. Next you need to define one or multiple Output devices, for example for two PixelInvaders panels (while the output for the second panel is rotated by 180 degrees):

pixelinvaders.layout.row1=NO_ROTATE,ROTATE_180
#pixelinvaders.layout.row2=NO_ROTATE,NO_ROTATE

Take a look at the config file, there are a lot of hints how to configure PixelController.

Main idea

A Visual can be assigned to one or more Output LED Matrices. A Visual consists of two Generators (create the content), two Effects (modify the content), a Mixer (mix the content) and a Colorset (define the look of the content). I try to visualize it:

[GENERATOR A] ---> [EFFECT A] ---> [MIXER] <--- [EFFECT B] <--- [GENERATOR B]
                                      |
                                      V  [Colorset]
                                   [VISUAL]

Exception: There are two exceptions, if you use the Capture generator or use the OSC Generator (that sends 24bpp data) PixelController switch to the Pass-though mode. This means no Colorset, Effect and Mixer can be used and the original input data is send to the panels.

Per default PixelController creates one Visual more than the number of connected Output devices. This allows you to play with a non-visible Visual, that can be displayed later. All Visuals can be stored (and of course loaded) in a preset.

DEMO

Check out PixelController Rough Cut #2. Featuring two PixelInvaders panels, PixelInvaders 3D RGB Panels and PixelInvaders panels controlled by a tablet (OSC) to see PixelController in action on two PixelInvaders panels.

SUPPORTED HARDWARE

PixelController supports different (LED) matrix hardware devices/controller:

Check out the integration/ArduinoFW directory, all Arduino based firmware files are stored there.

Which firmware should I use?

If you don't have a hardware controller (like ArtNet or E1.31) and would like to use an Arduino/Teensy microcontroller you can choose between different firmwares.

  • If you bought a PixelInvaders DIY Kit, use the integration/ArduinoFw/pixelinvaders/neoLedLPD6803Spi firmware
  • If you want to create a ONE panel matrix with an arbitrary resolution, use the integration/ArduinoFw/tpm2serial firmware
  • If you want to create multiple 8x8 panels, use the integration/ArduinoFw/pixelinvaders/neoLedWS2801Spi firmware

I recommend a Teensy 2.0 microcontroller, as some Arduino boards suffer from bad serial latency (especially the Arduino UNO r3). You need to install the Arduino IDE, see the "Getting started with Arduino" (http://arduino.cc/en/Guide/HomePage) Tutorial.

You need to know how to install an Arduino Library (http://arduino.cc/en/Guide/Libraries). For PixelInvaders Panels (LPD6803) install the integration/ArduinoFw/libraries/timer1 and integration/ArduinoFw/libraries/neophob_lpd6803spi libraries, for other panels (WS2801, WS281x...) install the integration/ArduinoFw/libraries/FastSPI_LED2 library.

How does it work?

PixelController generates the content for the LED matrix and sends the data out to the controller. The controller then handle the LED module update (which depends on the used LED modules). There are two options to send the data to the controller:

  • sends the data via USB to the Arduino/Teensy board aka. DIY LED controller.
  • sends the data via ethernet to a PixelInvaders/E1.31/ArtNet... device.

Here are some primitive schemes:

[PixelController]---<USB>---[Teensy with PixelInvaders firmware]---<SPI>---[LED#1]---[LED#2]...

[PixelController]---<USB>---[Teensy with TPM2 firmware using fastspi2 lib]---<SPI>---[LED#1]---[LED#2]...

[PixelController]---<ethernet>---[Artnet Controller]---<???>---[LED#1]---[LED#2]...

Advanced PixelController configuration

There are a lot of options in the config.properties file. I describe some examples; PixelController updates all Visuals depending on the Sound input. If a beat is detected, the Visuals are updated faster. You can disable this behavior by setting this option:

#=========================
#enable pixelcontroller sound analyzer (disable it if you don't have a sound card)
#=========================
sound.analyze.enabled=true

There is a Generator called "Screen Capture" which is disabled by default. If you want to enable this generator, edit the following settings:

#x/y offset for screen capturing generator
#if you define screen.capture.window.size.x as 0, the screen capture generator will be disabled
screen.capture.offset=100
screen.capture.window.size.x=500
screen.capture.window.size.y=300

This enables the Screen Capture Generator which captures a region of 500 x 300 pixels. Potential use cases for this Generator are: YouTube videos, other movie players...

Or you can start PixelController in the random mode where PixelController changes the Visuals randomly:

#=========================
#start in random mode?
#=========================
startup.in.randommode=false

Or you can save a preset and load that one per default if you start PixelController (per default, preset 0 will be loaded)

#=========================
#load a preset if PixelController starts?
#Warning, this will overwrite your settings configured above (initial generator values)!
#=========================
#startup.load.preset.nr=1

You can define the size of the PixelController GUI, for example the size of the simulated LED Matrix (which is per default 16 pixels):

#=========================
#the size of the software output matrix
#=========================
led.pixel.size=16

Or define the window size, depending on this setting, the Visuals are displayed larger or smaller.

#=========================
#define the maximal window size (control window)
#=========================
gui.window.maximal.width=820
gui.window.maximal.height=600

You can define your own Colorsets, they are defined in the file data/palette.properties. A Colorset definition consists of a name and multiple RGB color values. Here is an example:

MiamiVice=0x1be3ff, 0xff82dc, 0xffffff

There are more options in the config file, take a look - each option is documented in the config file.

FRONTENDS

There are different frontends for PixelController (besides the GUI frontend). It doesn't matter how you control PixelController - you have the same functions. See chapter OSC Messages to get an overview.

  • PixConCli: Command Line Interface for PixelController, works also remote. The CLI tool is called PixConCli.cmd on Windows and PixConCli.sh on Linux/OSX.
  • OSC: The OSC interface of PixelController is listening (by default) on port 9876. Processing examples are included in the integration/Processing directory. You can send messages to control PixelController or you can send image content via OSC to PixelController. Of course you can create your own interfaces, for example with the great TouchOSC application or using PureData or MaxDSP.

PixConCli Examples

You can send OSC messages to PixelController to control the software. PixelController includes a simple CLI tool to control the software by console. Start PixelController, then open the console:

Randomize current Visual

    # ./PixConCli.sh -c RANDOMIZE

Select Image Generator as Generator A (0 is Passthru, 1 is Blinkenlights...) for current Visual:

    # ./PixConCli.sh -c CHANGE_GENERATOR_A 2

Load image gradient.jpg

    # ./PixConCli.sh -c IMAGE gradient.jpg

Processing Examples

I included some Processing example Sketches. Maybe you can use one or several of those examples for your need. Those file should help you integrate PixelController into your environment. You need the OscP5 Processing library and ControlP5 Processing library to run the examples.

  • OscSendImageData/OscSenderRandom: Randomize Visual 1 four times per second
  • OscSendImageData/OscSenderSelectVisual: Change Generator, Effect and Mixer of Visual 0
  • OscSendImageData/PixelControllerRemote: PixelController remote application to load presets via GUI
  • OscSendControllMessages/colorAdjust: Sketch to adjust RGB values for multiple panels
  • OscSendControllMessages/kinect_MSAFluidDemo: An example Sketch to use a MS Kinect together with PixelController
  • OscSendControllMessages/particleexample: Particlesystem that can be controlled with your mouse
  • OscSendControllMessages/PixlInvCamAndroid: Android application, use the camera of your Android phone and send a live video stream to PixelController
  • OscSendControllMessages/sendImageKreise: An example of OpenProcessing used in PixelController
  • OscSendControllMessages/sendImageKreise24bpp: The same example as above, but use the color settings of the Sketch, use the PixelController pass through mode where no effect, mixer and colorsets can be used.
  • OscSendControllMessages/sendImageSecretLifeOfTuring: Another great animation of OpenProcessing
  • AdapterApp: A more advanced Pixelcontroller example I used for an installation. Select a random preset after a specified time.

PureData Examples

PureData is a visual language, included are some examples.

  • PureData/ledgui5-onePanel.pd: The old PixelController GUI, use it to create a frontend for your case...
  • PureData/ledgui5.pd: The old PixelController GUI, use it to create a frontend for your case...
  • PureData/Midi2OSC.pd: MIDI to OSC bridge - control PixelController with a MIDI device

MORE HINTS

Run PixelController on a RPi

As the RPi isn't the beefiest CPU (and PixelController doesn't use the GPU) it's not really practical to run it with the graphical frontend. But you can run the console version of PixelController. You need to run PixelController as root user (or open the /var/lock directory for the running user), the rxtx library (serial communication) use this directory to create a lock file. Example:

pi@raspberrypi ~/pixelcontroller-distribution-2.0.0/console $ sudo ./PixelControllerRPi.sh 
Nov 24, 2013 1:53:27 PM com.neophob.sematrix.cli.PixelControllerCli <init>
INFO: 

PixelController v2.0.0 - http://www.pixelinvaders.ch

Nov 24, 2013 1:53:29 PM com.neophob.sematrix.core.glue.FileUtils <init>
INFO: Use root directory: /home/pi/pixelcontroller-distribution-2.0.0.RC1
Nov 24, 2013 1:53:29 PM com.neophob.sematrix.core.setup.InitApplication loadConfiguration
<...>

Make sure you configured your LED Matrix (See above), to control PixelController please check out the "FRONTENDS" chapter.

Non-rectangular LED matrix

If you have a non-rectangular LED matrix you want to use with PixelController you can use the custom mapping feature called output.mapping. While it's position define the target offset, the nr define the source, example:

output.mapping=5,8,2,...

This means the first pixel gets the content of 5th pixel, the second pixel gets the content of the 8th pixel, the third pixel gets the content of the 2nd pixel and so on.

For example you wired up this Christmas tree (Matrix resolution 9x12):

-- -- -- -- XX -- -- -- --         -- -- -- -- 01 -- -- -- -- ( 09)
-- -- -- XX XX XX -- -- --         -- -- -- 02 03 04 -- -- -- ( 18)
-- -- XX XX XX XX XX -- --         -- -- 09 08 07 06 05 -- -- ( 27)
-- -- -- XX XX XX -- -- --         -- -- -- 10 11 12 -- -- -- ( 36)
-- -- XX XX XX XX XX -- --         -- -- 17 16 15 14 13 -- -- ( 45)
-- XX XX XX XX XX XX XX --         -- 18 19 20 21 22 23 24 -- ( 54)
-- -- XX XX XX XX XX -- --         -- -- 29 28 27 26 25 -- -- ( 63)
-- XX XX XX XX XX XX XX --         -- 30 31 32 33 34 35 36 -- ( 72)
XX XX XX XX XX XX XX XX XX         45 44 43 42 41 40 39 38 37 ( 81)
-- -- -- XX XX XX -- -- --         -- -- -- 46 47 48 -- -- -- ( 90)
-- -- -- -- XX -- -- -- --         -- -- -- -- 49 -- -- -- -- ( 99)
-- -- -- -- XX -- -- -- --         -- -- -- -- 50 -- -- -- -- (108)
       led position                       wiring order

To create a valid mapping use this config:

output.mapping=4, 12,13,14, 24,23,22,21,20, 30,31,32, 42,41,40,39,38, 46,47,48,49,50,51,52 ...

With this feature you can use all kinds of matrices, for example a circle matrix.

How to use PixelInvaders.net

PixelController allows you to network enable the PixelInvaders panels. See my Blog post for details. Here is the Quick Guide:

  • Install ser2net on your RPi
  • configure ser2net: 5333:raw:500:/dev/ttyACM0:115200 8DATABITS NONE 1STOPBIT
  • connect the Teensy board via USB to the RPi
  • start ser2net daemon
  • configure the PixelInvaders.net IP address in the config.properties file
  • have fun

Send Image data via OSC to PixelController

You can control PixelController remotely by sending OSC Messages. But you can also send image data to PixelController via OSC (/OSC_GENERATOR1 and /OSC_GENERATOR2).

First you need to find out the resolution for your Output device. Start PixelController and switch to the INFO tab. Search for the Internal Buffersize setting, this is the internal resolution. Now you have two options

  • send 8bpp (greyscale) image data to PixelController (Resolution X * Resolution Y * 1bpp). You can use Effects, Mixer and Colorsets.
  • send 24bpp image data to PixelController (Resolution X * Resolution Y * 3bpp). PixelController activates the pass through mode and Effects, Mixer and Colorsets cannot be used.

See the Processing examples OscSendControllMessages/sendImageKreise and OscSendControllMessages/sendImageKreise24bpp.

Create Blinkenlights movie files

Links that help you create Blinkenlights files:

A note about BLIMP, if you save a file, make sure to add the ".bml" file extension, else it may fail.

##OSC MESSAGES

Here are all commands PixelController knows.

    CHANGE_GENERATOR_A          # of parameters: 1     <INT> change first generator for current visual
    CHANGE_GENERATOR_B          # of parameters: 1     <INT> change first generator for current visual
    CHANGE_EFFECT_A             # of parameters: 1     <INT> change first effect for current visual
    CHANGE_EFFECT_B             # of parameters: 1     <INT> change second effect for current visual
    CHANGE_MIXER                # of parameters: 1     <INT> change mixer for current visual
    CURRENT_VISUAL              # of parameters: 1     <INT> select actual visual
    CURRENT_COLORSET            # of parameters: 1     <INT> select actual ColorSet

    CHANGE_OUTPUT_VISUAL        # of parameters: 1     <INT> change visual for current output
    CHANGE_OUTPUT_FADER         # of parameters: 1     <INT> change fader for current output
    CHANGE_ALL_OUTPUT_VISUAL    # of parameters: 1     <INT> change visual for all outputs
    CHANGE_ALL_OUTPUT_FADER     # of parameters: 1     <INT> change fader for all outputs
    CURRENT_OUTPUT              # of parameters: 1     <INT> select current output

    BLINKEN                     # of parameters: 1     <STRING> file to load for the blinkenlights generator
    IMAGE                       # of parameters: 1     <STRING> image to load for the simple image generator
    TEXTDEF                     # of parameters: 1     <INT> select texture deformation option, 1-11
    ZOOMOPT                     # of parameters: 1     <INT> select zoom options 1-4
    COLOR_SCROLL_OPT            # of parameters: 1     <INT> select color scroll fading direction, 1-14
    TEXTWR                      # of parameters: 1     <STRING> update text for textwriter generator
    TEXTWR_OPTION               # of parameters: 1     <INT> set mode textwriter (pingpong scroller, left scroller)
    CHANGE_BRIGHTNESS           # of parameters: 1     <INT> output brightness 0 .. 100
    GENERATOR_SPEED             # of parameters: 1     <INT> generator speed 0 .. 200 (default speed is 100)
    BEAT_WORKMODE               # of parameters: 1     <INT> change beat workmode 0-2
    OSC_GENERATOR1              # of parameters: 1     <BLOB> contains Xres*Yres*8bpp bytes or Xres*Yres*24bpp bytes raw imagedata
    OSC_GENERATOR2              # of parameters: 1     <BLOB> contains Xres*Yres*8bpp bytes or Xres*Yres*24bpp bytes raw imagedata

    CHANGE_THRESHOLD_VALUE      # of parameters: 1     <INT> select current threshold for the threshold effect, 0-255
    CHANGE_ROTOZOOM             # of parameters: 1     <INT> select angle for the rotozoom effect, -127-127

    CHANGE_PRESET               # of parameters: 1     <INT> select current preset id
    CHANGE_SHUFFLER_SELECT      # of parameters: 18    <INT>, parameter contains 15 nibbles to enable or disable the shuffler option (gets changed in the random mode), 0=OFF, 1=ON, example: 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 1 1 1
    SAVE_PRESET                 # of parameters: 0     <NO PARAM> save current preset settings
    LOAD_PRESET                 # of parameters: 0     <NO PARAM> load current preset settings
    RANDOM                      # of parameters: 1     <ON|OFF> enable/disable random mode
    RANDOM_PRESET_MODE          # of parameters: 1     <ON|OFF> enable/disable random preset mode
    RANDOMIZE                   # of parameters: 0     <NO PARAM> one shot randomizer
    PRESET_RANDOM               # of parameters: 0     <NO PARAM> one shot randomizer, use a pre-stored preset
    JMX_STAT                    # of parameters: 0     <NO PARAM> show JMX runtime statistic, default port: 1337 (use the -p switch)
    SCREENSHOT                  # of parameters: 0     <NO PARAM> save screenhot
    FREEZE                      # of parameters: 0     <NO PARAM> toggle pause mode
    TOGGLE_INTERNAL_VISUAL      # of parameters: 0     <NO PARAM> show/hide internal visual to save CPU

###OSC Parameter

If you want to select another Generator, Effect or Mixer via OSC Message, you need to specify it's ID. Here is the list of all Generator ID's:

	PASSTHRU(0)
	BLINKENLIGHTS(1)
	IMAGE(2)
	PLASMA(3)
	COLOR_SCROLL(4)
	FIRE(5)
	METABALLS(6)
	PIXELIMAGE(7)
	COLOR_FADE(8)
	TEXTWRITER(9)
	DROPS(10)
	CELL(11)
	PLASMA_ADVANCED(12)
	FFT(13)
	SCREEN_CAPTURE(14)
	OSC_GEN1(15)
	OSC_GEN2(16)
	VISUAL_ZERO(17)

Here is the list of all Effect ID's:

	PASSTHRU(0)
	INVERTER(1)
	ROTOZOOM(2)
	BEAT_HORIZONTAL_SHIFT(3)
	BEAT_VERTICAL_SHIFT(4)
	VOLUMINIZE(5)
	THRESHOLD(6)
	TEXTURE_DEFORMATION(7)
	ZOOM(8)
	FLIP_X(9)
	FLIP_Y(10)
	STROBO(11)
	ROTATE90(12)

Here is the list of all Mixer ID's:

	PASSTHRU(0)
	ADDSAT(1)
	MULTIPLY(2)
	MIX(3)
	NEGATIVE_MULTIPLY(4)
	CHECKBOX(5)
	VOLUMINIZER(6)
	EITHER(7)
	SUBSAT(8)
	HALFHALF(9)
	HALFHALFVERTICAL(10)
	MINIMUM(11)
	MAXIMUM(12)

IT DOES NOT WORK!

Try to understand WHAT does not work, which component? is it the frontend? PixelController itself? or no output?

Here are some common errors:

  • Is Java installed on your system? Open a terminal Windows (cmd.exe on Windows, terminal on OSX) and enter java -version.
  • Did you forgot to edit the configuration file config.properties. Take a look at the config examples files in the data/config.examples directory!
  • Did you flash the correct firmware to your Arduino/Teensy?
  • PixelInvaders panels: Make sure that the Panel shows an animated rainbow pattern when the panels are powered on (make sure that you also power the Arduino/Teensy board). If you don't see a animated rainbow, make sure the direction of the modules is correct and that the Arduino/Teensy, LED modules and PSU share common ground. Verify the Arduino IDE don't spit out errors when you upload the firmware to the teensy
  • PixelInvaders panels: Multiple users reported that the PixelInvader firmware did not work on a new Arduino UNO r3 board. I think the reason for this is the big serial latency. However using a Arduino UNO r1 worked flawlessly. Technically this is not a big deal, as the timeout value cold be adjusted in the firmware. Use a Teensy 2 board for best results.
  • Make sure you're using an up-to date Java Runtime (JRE), this usually helps if the JVM crashes.
  • If you use an extra long USB Cable (more than 5 meter) you might discover strange issues, try to use a short cable especially if you're uploading a firmware to the Arduino/Teensy.
  • The OSC Generator does not work: make sure you select the correct resolution for the OSC sender, take a look at the INFO tab, there you see the PixelController internal buffer size. Use this resolution in your OSC sender (or Processing sketch).

HOWTO BUILD PIXELCONTROLLER

Prerequisite:

Then run

# mvn initialize
to install the needed packages in your local repo and    
# mvn clean package
to build PixelController, the distribution directory is "target/assembly/PixelController-VERISON/".

Hint: if you're using eclipse and you see an error like this java.lang.NoClassDefFoundError: Could not initialize class gnu.io.RXTXVersionjava.lang.NoClassDefFoundError: Could not initialize class gnu.io.RXTXVersion make sure you add the lib/serial directory as "Native library location"

ADD NEW HARDWARE SUPPORT

It should be pretty simple to add support for new hardware. All Output code should go into the com.neophob.sematrix.output package (src/main/java/com/neophob/sematrix/output directory). All you need to do in the Output class is, take an array of int's (one int is used to store the 24 bpp) and send this buffer to your output device (via serial port, ethernet, bluetooth...). Maybe you need to reduce the color depth, flip each second scanline due hardware wiring, such helper methods should go into the OutputHelper.java class.

As a string point, add your hardware in the OutputDeviceEnum.java class and have a look where the other entries are referenced. Take a look at the existing Output classes, this should help you!

NEW RELEASE

Optional, license header check for all source files (http://code.mycila.com/license-maven-plugin/)

# mvn license:check -Dyear=2013 -Demail=michu@neophob.com -Dlicense.header=./../pixelcontroller-distribution/src/main/resources/header.txt 
# mvn license:format -Dyear=2013 -Demail=michu@neophob.com -Dlicense.header=./../pixelcontroller-distribution/src/main/resources/header.txt

Use the Maven version plugin to update your POM’s versions:

# mvn versions:set -DnewVersion=2.0.0
# mvn versions:commit

Rebuild:

# mvn clean deploy

Test application, make sure the config.properties file is correct.

Update readme.pdf - use README.md as source.

Update Changelog, add git status:

# git diff v1.5.0 develop --stat

Commit and push new version:

# git commit pom.xml -m "release v1.5.1"
# git push

Tag the release branch:

# git tag -a v1.5.1
# git push --tags

Merge into the master branch and push:

# git checkout master
# git merge develop
# git push

Checkout the master branch (already done)

Do a deployment build:

# mvn clean deploy

Release

PERFORMANCE

With the JMX interface you can monitor the status of your PixelController instance in real time. This will provide you with useful data such as required time for each layer (generator, effect, mixer…), the frame rate of your instance, allowing you to diagnose problems or performance issues. To read the JMX data, you will need to use a JMX client or the PixConCli util.

Example how to use PixConCli:

localhost:PixelController-1.3-SNAPSHOT michu$ ./PixConCli.sh -c JMX_STAT -p 1337
Create an RMI connector client and connect it to the RMI connector server 127.0.0.1:1337
Get an MBeanServerConnection...

Generic:
server version           : 1.1
current fps              : 20,036 (100% of configured fps: 20)
frame count              : 1771
running since            : 0:01:28.980

The following average times have been collected during the last 10.007 seconds:
   generator             : 0,310ms
   effect                : 0,000ms
   output schedule       : 0,140ms
   fader                 : 0,000ms
   debug window          : 15,210ms
   output prepare wait   : 0,005ms
   output update wait    : 0,005ms
   matrix emulator window: 0,440ms

Ouput-specific average times for output #1: NULL (NullDevice)
   prepare               : 1,550ms
   update                : 0,000ms

Close the connection to the server

CREDITS

  • Michael Vogt: Project Lead, Main Developer
  • Markus Lang: Maven enhancements, Output enhancements, Performance enhancements, Rainbowduino V3 support
  • McGyver666: Contributor
  • Rainer Ostendorf: Artnet Output
  • Pesi: miniDMX Output, Tester
  • Scott Wilson: Arduino/Rainbowduino Howto
  • Noxx6: Bugfixes
  • okyeron: Stealth output device
  • Dr. Stahl: Documentation, Tester

About

(LED) Matrix Control Software, supports various Hardware, Keywords: LED Matrix, OSC, Realtime, VJ, Arduino, Teensy, RPI

www.pixelinvaders.ch

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