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arduino pongPong was the first ever videogame that reached the mass market. For the first time in history, the concept of a “video game” was brought into the family home, thanks to the Atari 2600 – so it’s only right that we pay a little homage to this historical gem. Now, you can re-live that (admittedly somewhat boring gameplay) using an Arduino and some common components.

I won’t lie – it’s unlikely your daughter will be giving up her Nintendo DS, and this isn’t going to provide hours of fun for the whole family – but it is an awesome and easy project to improve your Arduino coding. And if you’re just getting started, don’t forget to check out our beginner’s Arduino guide.

We’ll make two basic controllers, and the video will output to your TV through a standard composite video cable.

Requirements for Arduino Pong

  • 470 ohm resistor x1
  • 1k ohm resistor x1
  • 10k ohm Potentiometer (twiddly variable resistor) x2
  • Arduino x1 (any version)
  • RCA plug x1 (if you have more than one, you can hook up sound too. One for the video is a bare minimum)
  • Pushbutton switch x1
  • 10k ohm resistor x1

arduino pong

You’ll also to download the TV Out Arduino library from here – get the TVoutBeta1.zip, the latest release. Place the resulting folders all into your /arduino/libraries directory, and restart the Arduino IDE if it’s open already.

Testing TV Out

Take your RCA plug and strip the outer layer away. Gather up the shielding, twist and put away to one side. This is your ground. In the center should be another cable with plastic shielding – again, strip this away so you have your signal line.

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arduino pong game

Solder both the 470 ohm and 1k ohm resistors to the centre signal line of your RCA plug – this provides a sync signal and the actual video signal, combined to produce the analogue video input. The 470 ohm resistor should slot into digital IO pin D07, while the 1k ohm resistor goes to pin D09.

These pins are set by the library we import, so you can’t change them. One of your Arduino GND pins should go to the shielding (outside) of the RCA.

arduino pong game

Now you can go ahead and load in an example; although both PAL and NTSC are provided, it shouldn’t really matter with modern digital TVs – the NTSC demo worked fine for me despite being in the UK. Plug into your TV, and should get a lovely retro 3D cube. Oooooh yeah – are you excited yet? I am.

arduino pong game

Test Analogue Potentiometer Inputs

Ok, we’ve got the TV output working, now let’s have a go with the controllers. The wiring of the “pots” is not so critical – each should have 3 pins, and the central one nearly always produces the output signal. Wire that to A0 and A1 (one for each pot). On one of the side pins – it doesn’t matter which – wire up +5V. The other pin on the other side should go to ground.

Here I’ve put them both facing each on single breadboard, because I only have short wires. For a polished product, you’ll want to use some old networking cable to give you a bit of distance (so you can actually sit on the sofa to play).

arduino pong project

Next, load up one of the basic example sketches that come with the Arduino – the analog input one. This demo will flash the onboard LED faster or slower, depending on the input on A0.

It doesn’t test the other A1 pot, but if you’ve got A0 wired up right then I can’t see how you would make a mistake on A1, so let’s assume that’s all good and move on.

Add a Start Switch

Finally, we’ll add a start switch on D02. Refer to the wiring diagram here for how to do that. This switch will be used to start the game when in the menu.

arduino pong project

The Pong Code

We’re using some code originally written by Lamonica, modified by duboisvb for two players, and updated by myself to use the latest beta version of the TV out library. You can view and download the code from this pastebin.

It’s quite long but simple code that shouldn’t require any explanation from me. Like most games, it relies upon a game state (menu, in-game, game over), and reads the input values of both controllers and the switch each iteration of the loop. Beyond that are the methods to draw the screen, the ball, the paddles, and the game logic.

arduino pong project

Note that the code includes audio output too: I couldn’t find any more RCA plugs to test that, but if you have some, then wire the signal pin directly to D11, and you should get some pleasing retro tones.

arduino pong

To be honest, I didn’t know Arduino could even do TV out without some immensely complex coding; the TV out library makes it really easy. Even if you’re not into retro gaming, using this basic TV out is a great way to utilise existing equipment as a cheap monitor device. You can of course output colour, too.

Do you think you’ll have a go at Arduino Pong, or perhaps make your own retro videogame remake? Tell us in the comments if you have!

  1. Mike P
    November 29, 2016 at 10:08 pm

    When I attempt to verify the code I get this error, how do i fix it.
    Board: "Arduino/Genuino Uno"

    In file included from \AppData\Local\Temp\arduino_modified_sketch_755751\sketch_nov29a.ino:10:0:

    Documents\Arduino\libraries\pollserial/pollserial.h:46:16: error: conflicting return type specified for 'virtual void pollserial::write(uint8_t)'

    virtual void write(uint8_t);

    ^

    In file included from C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/Stream.h:26:0,

    from C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/HardwareSerial.h:29,

    from C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/Arduino.h:232,

    from sketch\sketch_nov29a.ino.cpp:1:

    C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/Print.h:48:20: error: overriding 'virtual size_t Print::write(uint8_t)'

    virtual size_t write(uint8_t) = 0;

    ^

    exit status 1
    Error compiling for board Arduino/Genuino Uno.

  2. Arek
    October 7, 2016 at 5:04 am

    Hi - really good and inspiring article! I've made a similar console myself (and ported your code:)): http://uczymy.edu.pl/wp/blog/2016/09/08/gra-video-arduino/
    Thanks!

  3. sam
    September 6, 2016 at 9:02 pm

    Brilliant tutorial, however, I have one question:
    how could I change the speed that the ball travels during the game?
    It all works but I just find it a little slow.
    Thanks in advance!

    • James Bruce
      September 7, 2016 at 10:51 am

      From line 237 is where the speed up occurs, but there's also a speed limiter you should adjust first:

      #define MAX_Y_VELOCITY 6

      Increase that.

    • sam
      September 8, 2016 at 5:25 pm

      Thanks!

  4. Albi
    July 7, 2016 at 7:45 pm

    C:\Users\Albert\Documents\Arduino\arduinopong\arduinopong.ino:30:0: warning: "LEFT" redefined [enabled by default]

    #define LEFT 0

    ^

    In file included from C:\Users\Albert\Documents\Arduino\arduinopong\arduinopong.ino:3:0:

    C:\Users\Albert\Documents\Arduino\libraries\TVout/TVout.h:56:0: note: this is the location of the previous definition

    #define LEFT 2

    ^

    C:\Users\Albert\Documents\Arduino\arduinopong\arduinopong.ino:31:0: warning: "RIGHT" redefined [enabled by default]

    #define RIGHT 1

    ^

    In file included from C:\Users\Albert\Documents\Arduino\arduinopong\arduinopong.ino:3:0:

    C:\Users\Albert\Documents\Arduino\libraries\TVout/TVout.h:57:0: note: this is the location of the previous definition

    #define RIGHT 3

  5. Jye Barker
    May 25, 2016 at 1:54 am

    Hi, i'm getting an error compiling to my Leonardo, any suggestions? Error code below:

    Arduino: 1.6.8 (Mac OS X), Board: "Arduino Leonardo"

    Build options changed, rebuilding all
    /Users/barjye114/Documents/Arduino/sketch_may09a/sketch_may09a.ino:8:19: fatal error: TVout.h: No such file or directory
    #include
    ^
    compilation terminated.
    exit status 1
    Error compiling for board Arduino/Genuino Uno.

    This report would have more information with
    "Show verbose output during compilation"
    option enabled in File -> Preferences.

    • Mohammad Zaheer Hasan
      July 23, 2016 at 11:19 pm

      Did you have the Leonardo selected. It looks like the Uno might be selected. Go to Tools > Board > Arduino Leonardo. See if it helps.

  6. Trent
    May 19, 2016 at 10:35 pm

    Can I get better pictures of the bread board set up and arduino set up

  7. BRIK
    March 20, 2016 at 11:34 am

    Hey there.
    Great tutorial, but I'm having an issue with the TVout example. The software verifys and uploads to my Arduino MEGA with no error messages whatsoever, but there is nothing showing on my TV.
    I'm thinking my soldering is dodgy (hopefully not)? Or I've simply made a mistake with how I've plugged it into my MEGA? Eitherway, I've uploaded some photos to Imgur. Can you please quickly check them and see if anything is out of place?
    I've tried both the PAL and NTSC examples, but it's plugging into a modern Sony Bravia so it shouldn't be an issue.

    Ground line solder: http://imgur.com/dYVVSQn

    Signal line solder: http://imgur.com/RYmJGIb

    Plugged in: http://imgur.com/ggupKFC

    Thank you, and keep up the good work in the Arduino world!

  8. Gerben
    March 16, 2016 at 7:55 pm

    How do I install the Pong library?

  9. Gerben
    March 16, 2016 at 4:07 pm

    Hi there,

    I just tried to get the image on my tv, but I don't get this. Into which GND do I need to put the cable as said? I just connected it to the GND under 5 V. And do I need another cable to connect with the 5 V and something with the + on the breadboard?
    And do I need to do anything with the link: https://github.com/Avamander/arduino-tvout
    Which James Bruce commented.

    Thanks!

  10. Kevin Bishop
    March 12, 2016 at 9:18 pm

    Hello
    Newbie needing a bit of help loaded tvout file and got cube on tv but it's rolling down the screen like the horizontal hold needs adjusting,Any idea why?
    Cheers

    • Kevin Bishop
      March 12, 2016 at 9:19 pm

      Sorry vertical hold not horizontal

  11. Josh
    March 4, 2016 at 5:53 pm

    I just ran this on an Uno using Arduino IDE 1.6.7 (latest as of now)... worked for me. Followed the instructions and used the TVOutBeta1.zip. Thanks for posting this - fun little project!

  12. Bailey Cohen
    February 28, 2016 at 4:52 am

    hi, I have downloaded the TVOut file, however I can't load in the example. When I try to load it to the arduino, I get the following message:

    [2/27/2016, 11:48:30 PM] - Start Building
    [2/27/2016, 11:48:30 PM] - Error: ENOENT, no such file or directory '/Users/bailey/Documents/Arduino/libraries/TVout/examples/DemoNTSC/DemoNTSC.ino'

    I looked through the files and as it turns out there is no file called "DemoNTSC.ino" inside DemoNTSC. What am I supposed to do? I can't find it anywhere, even when I to download files other than the latest beta version.

    • James Bruce
      February 28, 2016 at 8:55 am

      Sadly, the library is 5 years old, and file is named .pde, instead of .ino, which was the old convention. If the library is still compatible, which i doubt, try opening the DemoNTSC.pde manually from that directory, then copy the code into a new program and run from there.

      • Bailey Cohen
        February 29, 2016 at 8:18 am

        ok, thanks. Dang, I really wanted to impress my friends with this. I guess now I at least now know how to strip RCA wiring and use a soldering iron. Also, I'll use your existing code to better improve my own :-)

      • Bailey Cohen
        February 29, 2016 at 8:19 am

        also how was everyone else able to do it? Some of the comments saying they were successful were just from this January.

  13. Tailai Kang
    January 15, 2016 at 4:43 pm

    Hi in which part of the code can I change the speedate of the ball? Thank you

    • Tailai Kang
      January 15, 2016 at 4:44 pm

      Speed*

  14. Stan Claas
    January 13, 2016 at 10:49 am

    Hello,
    I've downloaded and copied the library correctly but when I verify the code I get the following error messages:

    Arduino: 1.6.7 (Windows 10), Board: "Arduino Yún"

    C:\Users\Stan\Documents\Arduino\sketch_jan13a\sketch_jan13a.ino:38:0: warning: "LEFT" redefined [enabled by default]

    #define LEFT 0

    ^

    In file included from C:\Users\Stan\Documents\Arduino\sketch_jan13a\sketch_jan13a.ino:11:0:

    C:\Program Files (x86)\Arduino\libraries\TVout/TVout.h:56:0: note: this is the location of the previous definition

    #define LEFT 2

    ^

    C:\Users\Stan\Documents\Arduino\sketch_jan13a\sketch_jan13a.ino:39:0: warning: "RIGHT" redefined [enabled by default]

    #define RIGHT 1

    ^

    In file included from C:\Users\Stan\Documents\Arduino\sketch_jan13a\sketch_jan13a.ino:11:0:

    C:\Program Files (x86)\Arduino\libraries\TVout/TVout.h:57:0: note: this is the location of the previous definition

    #define RIGHT 3

    ^

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp: In member function 'void TVout::tone(unsigned int, long unsigned int)':

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:814:2: error: 'TCCR2A' was not declared in this scope

    TCCR2A = 0;

    ^

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:815:2: error: 'TCCR2B' was not declared in this scope

    TCCR2B = 0;

    ^

    In file included from c:\program files (x86)\arduino\hardware\tools\avr\avr\include\avr\io.h:99:0,

    from C:\Program Files (x86)\Arduino\libraries\TVout\TVout.h:35,

    from C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:35:

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:816:16: error: 'WGM21' was not declared in this scope

    TCCR2A |= _BV(WGM21);

    ^

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:817:16: error: 'CS20' was not declared in this scope

    TCCR2B |= _BV(CS20);

    ^

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:825:5: error: 'DDR_SND' was not declared in this scope

    DDR_SND |= _BV(SND_PIN); //set pb3 (digital pin 11) to output

    ^

    In file included from c:\program files (x86)\arduino\hardware\tools\avr\avr\include\avr\io.h:99:0,

    from C:\Program Files (x86)\Arduino\libraries\TVout\TVout.h:35,

    from C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:35:

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:825:20: error: 'SND_PIN' was not declared in this scope

    DDR_SND |= _BV(SND_PIN); //set pb3 (digital pin 11) to output

    ^

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:866:5: error: 'OCR2A' was not declared in this scope

    OCR2A = ocr;

    ^

    In file included from c:\program files (x86)\arduino\hardware\tools\avr\avr\include\avr\io.h:99:0,

    from C:\Program Files (x86)\Arduino\libraries\TVout\TVout.h:35,

    from C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:35:

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:868:21: error: 'COM2A1' was not declared in this scope

    TCCR2A &= ~(_BV(COM2A1)); //set COM2A1 to 0

    ^

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:869:19: error: 'COM2A0' was not declared in this scope

    TCCR2A |= _BV(COM2A0);

    ^

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp: In member function 'void TVout::noTone()':

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:875:2: error: 'TCCR2B' was not declared in this scope

    TCCR2B = 0;

    ^

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:876:2: error: 'PORT_SND' was not declared in this scope

    PORT_SND &= ~(_BV(SND_PIN)); //set pin 11 to 0

    ^

    In file included from c:\program files (x86)\arduino\hardware\tools\avr\avr\include\avr\io.h:99:0,

    from C:\Program Files (x86)\Arduino\libraries\TVout\TVout.h:35,

    from C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:35:

    C:\Program Files (x86)\Arduino\libraries\TVout\TVout.cpp:876:20: error: 'SND_PIN' was not declared in this scope

    PORT_SND &= ~(_BV(SND_PIN)); //set pin 11 to 0

    ^

    exit status 1
    Error compiling.

    • James Bruce
      January 13, 2016 at 11:00 am

      I'm afraid all bets are off if you use Yun - many projects are incompatible, and this is probably one of them.

      • Stan Claas
        January 13, 2016 at 11:19 am

        Oh god. I have a project I need to turn in Friday. Seems like I have 2 days to come up with something else. Panic mode engaged.

  15. sacha
    January 5, 2016 at 1:55 pm

    Hello,

    a real noob question here.
    it seem i don't have 470 ohm resistors in my arduino starter kit, is there a way to use other resistors? can i use 220ohm+ 220ohm (440) ?

    • James Bruce
      January 5, 2016 at 2:02 pm

      Yeh, that should work fine.

      • sacha
        January 9, 2016 at 1:12 pm

        thx!
        worked like a charm.

  16. Sa
    December 26, 2015 at 7:30 pm

    Hi, love the idea! One hitch, when I try to upload the code into Arduino, it says "Error, "TV out" does not name a type" I have restarted the IDE many times, and I have definitely installed the Tvout library, but it just says error. Please help asap!

    • Sa
      December 27, 2015 at 12:43 pm

      Hi, me again. I tried loading up the NSTC sketch as well, but it still says the same thing "TVout does not name a type" !!!!!!! What should I do! Please help!

      • James
        December 27, 2015 at 8:34 pm

        You havent installed the library correctly. Did you download the TVOut library, unzip it, and place it in your libraries folder?

  17. Archisman Dinda
    December 12, 2015 at 12:47 pm

    I cannot see the TV output, i.e. the retro 3D cube that was supposed to be seen on the TV screen.

  18. Jo
    November 30, 2015 at 4:12 pm

    Thank you very much for your work!

    I just made a "list-style" of your great tuturial, since non-native speakers might miss some "hidden" details in a continuous text.

    ### SOFTWARE ###

    Things to do on your computer / software:

    S 0) If you have the Arduino IDE running: exit it.
    S 1) Download "TVoutBeta1.zip" from https://code.google.com/p/arduino-tvout/downloads/list
    S 2) Copy all three directories contained in "TVoutBeta1.zip" to the "\libraries" directory of your Arduino IDE (in my case: c:\arduino-1.0.1\libraries). After this, there should be the three new directories and several more.
    S 3) Start the Arduino IDE and check if you have the menu-entry "File > Examples > tvout". If not, restart the IDE and check if you put everything in the right place.

    ### HARDWARE ###

    Things to do with hardware/your Arduino:

    ##TV-Connection##
    H 1) Take your RCA plug/Cinch-Cable and strip the outer rubber layer away. Gather up the shielding, twist and put away to one side. This is your ground (GND).
    H 2) Strip the plastic/rubber from the inner cable as well. This is your SIGNAL.
    H 3) Solder BOTH the 470 ohm and 1k ohm resistors to SIGNAL.
    H 4) The 470 ohm (Yellow|Purple|Brown) connects to Digital D07 on the Arduino
    H 5) The 1k ohm (Brown|Black|Red) connects to Digital D09 on the Arduino
    H 6) The shielding (GND) connects to a ground/GND on the Arduino
    H 7) Load the examples (from S 3 above) into your Arduino, connect the RCA/Cinch Cable to your TV-Video-In (yellow connector on your TV-set) and add power - you should see some lovely output on your TV.

    ##Control##

    #Paddles#
    H 8) Connect the center pin of one 10k ohm potentiometer to Analog A0 on the Arduino and the center pin of the other potentiometer to Analog A1 on the Arduino.
    H 9) Connect one of the outer pins of each 10k ohm potentiometer to GND on the Arduino.

    #Startbutton#
    H 10) Startbutton: connect one of the two pins of the pushbutton to +5V on the Arduino, connect the other pin to Digital D02 on the Arduino AND to a 10k ohm resistor.
    H 11) Connect the other end of the 10k ohm resistor to ground/GND on the Arduino.
    (https://www.arduino.cc/en/uploads/Tutorial/button_schem.png)

    ### SOFTWARE 2 ###
    S 4) Start your Arduino IDE and copy the sourcecode from Pastebin to the workspace, compile and upload everything to the Arduino. Connect the Arduino to your tv and you're ready play!

  19. Milen Tsolov
    September 20, 2015 at 7:16 pm

    Ok. I like the idea. So i think i've made it right. The code was uploaded without any errors, but there is not picture on the screen. Where is my mistake? Help. Thanks in advance.

    • James Bruce
      September 21, 2015 at 8:20 pm

      - Check the wiring. I didn't provide a wiring diagram as I figured the text was easy enough to follow, but it's unusual.

      - Check the TV is set to correct input (analog or "AV" most likely).

  20. Phatt S Swine
    August 5, 2015 at 1:42 pm

    hi,
    great project! i got it working and startet building an arcade cabinet for this
    but i'd like to speed it up a little

    every attempt to increse the ball speed ended up in weird behavior of it
    so i'd really love to know where one can edit the balls speed

    cheers
    phat

    • James Bruce
      August 5, 2015 at 2:08 pm

      Hi Phatt. "ballVolX" and "ballVolY" are the speed variables, but they naturally increase slightly with each hit. There's also a maximum velocity defined which they wont go over. So, I would suggest increasing the maximum velocity, and then perhaps increase the multiple in this line if you'd like them to go faster each time:

      ballVolY += 2 * ((ballY - leftPaddleY) - (PADDLE_HEIGHT / 2)) / (PADDLE_HEIGHT / 2);

      Perhaps try 3 * ....

      • Alex
        January 10, 2016 at 3:22 am

        Dear James,
        A friend and I edited the ballVol variables but it didn't seem to change the speed. We then tried to increase the BallX and BallY variables, which did increase the speed but also glitched the paddles- the ball would not bounce off the P1 paddle. In our opinion, the easiest way adjust the speed is modifying the line

        if(frame % 3 == 0).
        to
        if(frame % 2 == 0)
        or
        if(frame % 1 == 0)

    • Alex
      January 10, 2016 at 3:13 am

      Dear Phatt,
      A friend and I figured out how to adjust the ball speed without glitching the game.
      if(frame % 3 == 0) adjust the three there to a two or even one to make the game crisper and faster.

      for example: if(frame % 1 == 0)

  21. Siow Shien Loong
    June 20, 2015 at 7:14 am

    hi. can I connect to laptop instead connect to TV? If yes, how can I modified the code?

    • James Bruce
      June 20, 2015 at 8:32 am

      No. The Arduino can only output composite video, which your laptop does not take as input (unless it has a TV card built-in).

  22. Adan Aguinaga
    June 2, 2015 at 1:20 am

    I was wondering if you could give the steps on how to connect the arduino and the breadboard with the cables that are given, matching everything in the correct place?

  23. Mike
    May 6, 2015 at 12:23 am

    Hi, what do you mean by "get the TVoutBeta1.zip, the latest release. Place the resulting folders all into your /arduino/libraries directory, and restart the Arduino IDE if it’s open already." Sorry but I can't figure it out. Thanks

    • James Bruce
      May 6, 2015 at 6:54 am

      Download the library that's linked. Libraries provide additional functionality, but they need to be added to a specific place in your Arduino folder then included in the project. Download that zip file, extract all the folders that are inside it and place them in your libraries folder. You need to restart the Arduino app in order for it to re-scan the libraries folder and recognize that they've been added.

  24. Thaddeus Stasney
    April 22, 2015 at 9:44 pm

    I'm trying to copy and paste the pong code to the Arduino clipboard but when I click 'verify', I get tons of errors. How can this be fixed?

  25. Diego
    December 27, 2014 at 8:25 pm

    hello, how can i increase the speed?

    • Alex
      January 10, 2016 at 3:14 am

      Dear Diego,
      A friend and I figured out how to adjust the ball speed without glitching the game.
      if(frame % 3 == 0) adjust the three there to a two or even one to make the game crisper and faster.

      for example: if(frame % 1 == 0)

  26. Euclides
    November 19, 2013 at 12:49 pm

    Where are the Eletronic Diagram?

    You know make this?

    Or missed this class?

    "Any job worth doing is worth doing well. And any job done well is worth doing. Your reputation is your best resume." – Michael Josephson

    • James B
      November 20, 2013 at 12:01 pm

      The text is clear enough - there's no complex wiring since all components connect directly to the Arduino on standard IO ports or +/GND rail.

  27. Alan Calderon
    July 4, 2013 at 10:20 pm

    This is a great proyect!
    Thanks!
    Excuse me, the pastebin link isn't working, could you fix it? Thanks!

  28. Max
    June 19, 2013 at 9:31 pm

    Cool! Didn't realize it was this easy to interact with the graphics!

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