They have been recommended to me in the past, but they only work with wifi! I'd rather use ethernet cables and network switches, because that's more reliable than wifi in a stage setting. The ideal microcontroller can do both as wifi is a lot easier to set up than running cables, but the question remains how well they will work when there are a lot of them (currently at eight strips/controllers but I want MO4R!). Ideally I'd need something like an Arduino Mega but that gets expensive, and is probably overkill anyway.

@cansik I made this overly complicated setup... I have a number of RGBW LED strips that I control with Arduinos, which are controlled by Raspberry Pis. The Pis run a Processing sketch that I can send commands to from another sketch running on my laptop. I could select colour, effect and effect speed per LED strip. No individual pixel control from the laptop even though the leds are individually addressable, but I programmed some effects on the Arduinos that used this property.

For a gig, my friend was using a Chamsys board running MagicQ. So I reprogrammed the sketch running on my laptop to accept art-net using your fine library. We connected the Chamsys board to my laptop with an Ethernet cable through one of its art-net outputs and voila, the LED strips became controllable from his console! Works also with Freestyler.

Only downside was a slight delay between control input and LED strip response, which isn't surprising if you know the signal path: console -> (art-net) -> laptop running Processing -> (wifi) -> Raspberry Pi running Processing -> (serial) -> Arduino -> LED strip... Another issue is a timing desync, eg. stroboscope flashes became misaligned between the strips.

In the future I want to deprecate the Raspis and use a better controller that I can connect to network directly. The Arduino Nanos with ethernet expansion board proved too slow for realtime per-pixel control, as the communication between the Nanos and the ethernet board is using the serial interface. So I'm looking for a microcontroller that can directly translate an image to pixel output, and do it fast enough to get a decent framerate. All I need is time and money...

Glad you were able to resolve your issue! If you want further feedback on your solution, share your Arduino code here.... although I am assuming that it is based on the Arduino random number example.

I did a bunch of trail and error these past few days. I was able to get it working from the arduino side. Thanks

That's the thing...I don't know the origin (x,y) of either image, as the plane is controlled by the data input from the arduino sensor (incoming distance between my hand and the sensor) and the clouds are in an array and programmed to be randomly placed within the sketch. I do however know the width/height of both images, I just don't know the origin (x, y) for either.

So I'm working from the code in Step 6 (I will attach below) of this tutorial: http://www.instructables.com/id/How-to-control-a-simple-Processing-game-with-Ardui/

I am using an HR-SR04 ultrasonic sensor to control the plane, moving it up and down via hand movements.

What I am trying to do is implement an obstacle feature to the game, by having the score decrease by 1 when the plane hits a cloud. However I can't get the collision detection working for when the plane hits a cloud. The original author has managed to get this working perfectly for when the plane hits the bird but I'm not sure how to get it working between the plane and clouds, I've tried everything I can think of but I'm stuck.

Any help would be appreciated.

Below is the code that I'm working from:

`//Ultrasound plane, a game with a plane and an ultrsound sensor (but

//by Yoruk for Instructables

//send commments or questions to Yoruk16_72 AT yahoo DOT fr


//19 07 14 : initial code
//20 07 14 : it works with arduino !!
//07 07 15 : picture for the plane and for the grass
//06 12 15 : score system with the bird


int i, j; 

int Score ;
float DistancePlaneBird;


float Hauteur; //en Y
float Angle;
int DistanceUltra;
int IncomingDistance;
//float Pas; //pour deplacements X

float BirdX;
float BirdY;

float GrassX ;  //for X position




String DataIn; //incoming data on the serial port

//5 a 32 cm


float [] CloudX = new float[6];
float [] CloudY = new float[6];

//vitesse constante hein


PImage Cloud;
PImage Bird;
PImage Plane;
PImage Grass;



// serial port config
import processing.serial.*; 
Serial myPort;    



//preparation
void setup() 
{

    myPort = new Serial(this, "/dev/cu.usbmodem1411", 9600); 

    myPort.bufferUntil(10);   //end the reception as it detects a carriage return

    frameRate(30); 

    size(800, 600);
    rectMode(CORNERS) ; //we give the corners coordinates 
    noCursor(); //why not ?
    textSize(16);

    Hauteur = 300; //initial plane value


    Cloud = loadImage("cloud.png");  //load a picture
    Bird = loadImage("bird.png");  
    Plane = loadImage("plane.png");  //the new plane picture

        Grass = loadImage("grass.png");  //some grass


    //int clouds position
    for  (int i = 1; i <= 5; i = i+1) {
        CloudX[i]=random(1000);
        CloudY[i]=random(400);
    }


    Score = 0;
}


//incoming data event on the serial port


void serialEvent(Serial p) { 
    DataIn = p.readString(); 
    // println(DataIn);

    IncomingDistance = int(trim(DataIn)); //conversion from string to integer

    println(IncomingDistance); //checks....

    if (IncomingDistance>1  && IncomingDistance<100 ) {
        DistanceUltra = IncomingDistance; //save the value only if its in the range 1 to 100     }
    }
}


//main drawing loop
void draw() 
{
    background(0, 0, 0);
    Ciel(); //draw the sky
    fill(5, 72, 0);



    //rect(0, 580, 800, 600); //some grass

    //new grass : 

    for  (int i = -2; i <= 4; i = i+1) {  //a loop to display the grass picture 6 times

        image(Grass, 224*i  + GrassX, 550, 224, 58);  // 224 58 : picture size
    }

    //calculates the X grass translation. Same formulae than the bird
    GrassX = GrassX  -  cos(radians(Angle))*10;

    if (GrassX < -224) {  //why 224 ? to have a perfect loop
        GrassX=224;
    }


    text(Angle, 10, 30); //debug things...
    text(Hauteur, 10, 60); 


    //new part : check the distance between the plane and bird and increase the score
    DistancePlaneBird = sqrt(pow((400-BirdX), 2) + pow((Hauteur-BirdY), 2)) ;

    if (DistancePlaneBird < 40) {
        //we hit the bird   
        Score = Score+ 1;

        //reset the bird position
        BirdX = 900;
        BirdY = random(600);
    }

    //here we draw the score
    text("Score :", 200, 30); 
    text( Score, 260, 30); 



    //Angle = mouseY-300; //uncomment this line and comment the next one if you want to play with the mouse
    Angle = (18- DistanceUltra)*4;  // you can increase the 4 value...



    Hauteur = Hauteur + sin(radians(Angle))*10; //calculates the vertical position of the plane

    //check the height range to keep the plane on the screen 
    if (Hauteur < 0) {
        Hauteur=0;
    }

    if (Hauteur > 600) {
        Hauteur=600;
    }

    TraceAvion(Hauteur, Angle);

    BirdX = BirdX - cos(radians(Angle))*10;

    if (BirdX < -30) {
        BirdX=900;
        BirdY = random(600);
    }

    //draw and move the clouds
    for  (int i = 1; i <= 5; i = i+1) {
        CloudX[i] = CloudX[i] - cos(radians(Angle))*(10+2*i);

        image(Cloud, CloudX[i], CloudY[i], 300, 200);

        if (CloudX[i] < -300) {
            CloudX[i]=1000;
            CloudY[i] = random(400);
        }
    }

    image(Bird, BirdX, BirdY, 59, 38); //displays the useless bird. 59 and 38 are the size in pixels of the picture
}


void Ciel() {
    //draw the sky

    noStroke();
    rectMode(CORNERS);

    for  (int i = 1; i < 600; i = i+10) {
        fill( 49    +i*0.165, 118   +i*0.118, 181  + i*0.075   );
        rect(0, i, 800, i+10);
    }
}


void TraceAvion(float Y, float AngleInclinaison) {
    //draw the plane at given position and angle

    noStroke();
    pushMatrix();
    translate(400, Y);
    rotate(radians(AngleInclinaison)); //in degres  ! 


    /*
    Drawing concept :  ;-)

     |\___o__
     ________>     

     */

    scale(0.5);  //0.2 pas mal

    //unless drawing the plane "by hands", just display the stored picture instead. Note that the parameters 2 and 3 are half the picture size, to make sure that the plane rotates in his center.
    image(Plane, -111, -55, 223, 110); // 223 110 : picture size



    popMatrix(); //end of the rotation matrix
}

//file end`

Are you trying to generate a random number on the Arduino side?

• https://www.arduino.cc/reference/en/language/functions/random-numbers/random/

...or on the Processing side?

• https://processing.org/reference/random_.html

Ok, this is the code in your arduino. Tell us where do you want to implement the random part? Have you run processing code before? Can your processing code talk to your arduino board using a serial connection?

You can browse previous posts and find some code suitable for you: https://forum.processing.org/two/search?Search=arduino

One possible idea is this: Your arduino sends commands via serial. You connect your arduino to your computer (physically) and in Processing, you open the serial port where your arduino is connected. Then, every time your arduino sends any data, your Processing sketch intercepts it and process it. In the processing part, you can generate a random number and displays it on the screen. So for instance, every time you push a button you get a new number in the screen.

Kf

The farthest I've seem to have gotten is simply having my arduino board and button interact with a LED. I don't know how to generate random numbers at all or how to use processing with the button.

Here is the sketch I have so far.

void setup() {
  pinMode(2, INPUT);
  pinMode(3, OUTPUT);

}

Void loop() {
  if (digitalRead(2) == HIGH) {
   digitalWrite(3, HIGH);
} else {
   digitalWrite(3, LOW);

}

}

1) Can you generate a random number? Like, at all?

2) Can you display a number? At all?

3) Can you display the number you generated?

4) Can you generate a new random number every time you click the mouse?

5) Can your sketch communicate with your Arduino?

6) Can your button communicate with Arduino?

7) Can your sketch get some signal from the Arduino when the button is pressed?

8) Can you regenerate the random number when that signal is received instead of using a mouse click?

Break your problem down into smaller problems! More than likely you may be able to tackle some of them yourself... AND IF YOU CAN THEN WE DON'T NEED TO HELP YOU WITH THAT PART. So show us what you have working so far SO WE KNOW WHAT WE DON'T NEED TO HELP YOU WITH. If you don't do that, you're asking us to do the WHOLE THING for you without doing ANYTHING yourself!

This is my first time ever using any programming language. I'm trying to create a small button attached to an arduino board that generates a random number from 0-100 on my computer screen while attached via USB. I looked at the reference area to try to figure out what do I write, but I am a bit lost. I could please use some help!

When I use just two values, (eg just pitch and roll) the orientation seems to be represented normally. But when I throw the third into the mix, it gets a little wild.

You will need to check the reference to see what are the range of each angle. Then in your application, you need to define your own range if it is not the same as provided by Android. You will have the same challenge using a generic gyro connected to arduino.

If you work only with yaw, does it behave as you expect? What are you trying to do by the way? For instance, are you mounting your phone on an UAV?

Kf

Thanks, koogs. I've tried every which combo. No joy. I'll try to get another phone for ref in the near future, or maybe hook up a gyro to arduino instead.

Hi everyone,

Just dropping a line to say that the department of Computing at Goldsmiths, University of London, is looking to recruit a few more artist-hackers for next year's cohort at the MA/MFA in Computational Arts (starting Sept 2018).

What will I learn? Using openFrameworks, Arduino, Processing you'll learn machine learning, computer vision, generative art, genetic algorithms, audio-visual programming and so much more in order to make interactive installations, physical objects, robots, phone apps, games etc. Visit the link above for a list of the courses on offer.

Do I need to know how to code? Not necessarily. About 30% of our students know how to code before they join us. The classes are of varying levels and they cater for all abilities. We value the diversity of skills each person brings in. We have architects, dancers, coders, musicians, writers and many more practitioners on the course!

Who will teach me? All teaching staff are creative practitioners themselves. Here are some of them: * Prof. Atau Tanaka * Phoenix Perry indie games developer great openFrameworks contributor * Prof. Mick Grierson who led the world's first MOOC in Creative Coding * Rebecca Fiebrink who runs the popular Kadenze course on Machine Learning for Musicians and Artists * Lior Ben Gai - creative technology practitioner * Freida Abtan * Helen Pritchard hacker and critical theorist * Theo Papatheodorou founder of Random Quark creative tech studio

All members of staff are academics but maintain a strong creative practice too! Furthermore, you'll get regular crit sessions. Guests in the past included Memo Akten and Patrick Tresset, Kyle McDonald, Jane Prophet, Maurice Benayoun, Andrew Shoben and many more!

What do current students make? * In C++ where virtual perforers take autonomous decisions in real time as they perform Riley's "In C". * A sign glove that translates sign language to sounds and recently won a prestigious hackathon in Korea * Dancers in White where a dancer is performing with robots she made using computer vision * Generative jewelry using online software and 3D printed. Upon graduation student took project to kickstarter, raised 15k, launced her own business * Salty Bitter Sweet is an installation using computer vision + machine learning to "taste" images, uses data to generate shakespear-seeded sonnets.

For other projects from last year's 2017 graduates have a look here

Where will I work? You'll be working in state of the art facilities. Goldsmiths Computing unveiled a brand new fabrication space equipped with twelve 3D printers, a £60k laser cutter and a fully stocked electronics lab, all freely accessible to MA/MFA students.

So, is this all work and no play? Absolutely not! We organise pop-up exhibitions, computational art gallery visits for our students, we take massive field trips. Last year we travelled all together to a Netherlands hackathon and this year 50 of us went to Transmediale in Berlin.

If this is the kind of work you'd love to be doing, in a interdisciplinary, creative department, please get in touch!

More info on how to apply go here

If you have questions let me know by writing to theo@gold.ac.uk

Dr Theodoros Papatheodorou Lecturer in Computational Arts Computational Arts MA/MFA Programme Leader

void waitForLoadDialog() { 
  if (!loadPath.equals("")) {
    // waiting is over
    loadIt(); 
    // go back 
    state=normal;
  }
}

void saveIt() {
  // save

  // make array (to save it)
  String[] strs; 
  strs = new String[0]; 

  if (activeArrayListHasNumber==0) {
    strs = new String[points1.size()]; 
    int i=0; 
    for (PVector pv : points1) {
      strs[i]=str(pv.x)+","+str(pv.y); 
      i++;
    }//for
  }// 
  else if (activeArrayListHasNumber==1) {
    strs = new String[points2.size()]; 
    int i=0; 
    for (PVector pv : points2) {
      strs[i]=str(pv.x)+","+str(pv.y); 
      i++;
    }//for
  }//else
  else if (activeArrayListHasNumber==2) {
    strs = new String[points3.size()]; 
    int i=0; 
    for (PVector pv : points3) {
      strs[i]=str(pv.x)+","+str(pv.y); 
      i++;
    }//for
  }//else
  else if (activeArrayListHasNumber==3) {
    strs = new String[points4.size()]; 
    int i=0; 
    for (PVector pv : points4) {
      strs[i]=str(pv.x)+","+str(pv.y); 
      i++;
    }//for
  }//else

  // check if file extension (fileExtension, e.g. .txt) is there 
  int len = savePath.length(); 
  if (len<4 || !savePath.substring( len-4 ).equals(fileExtension)) {
    // file Extension is not present, we have to add it
    savePath += fileExtension; // add the file Extension
  } 

  // save 
  println("Saved: " + savePath); 
  saveStrings( savePath, strs );

  // get file name for list 
  fileNames[activeArrayListHasNumber] =  nameFromPath(savePath);
} //func

void loadIt() {
  // load
  if (activeArrayListHasNumber==0)
  {
    points1.clear();
  } else if (activeArrayListHasNumber==1)
  {
    points2.clear();
  } else if (activeArrayListHasNumber==2)
  {
    points3.clear();
  } else if (activeArrayListHasNumber==3)
  {
    points4.clear();
  }

  fileNames[activeArrayListHasNumber] =  nameFromPath(loadPath); 

  String[] strs = loadStrings( loadPath ); 
  for (String s : strs) {
    String[] thisLine=split(s, ","); 

    if (activeArrayListHasNumber==0) 
    {
      points1.add(new PVector(float(thisLine[0]), float(thisLine[1])));
    } else if (activeArrayListHasNumber==1)
    {
      points2.add(new PVector(float(thisLine[0]), float(thisLine[1])));
    } else if (activeArrayListHasNumber==2)
    {
      points3.add(new PVector(float(thisLine[0]), float(thisLine[1])));
    } else if (activeArrayListHasNumber==3)
    {
      points4.add(new PVector(float(thisLine[0]), float(thisLine[1])));
    }//else
    //
  }//for
}//func 

// -------------------------------------------------

void showData1() {
  //
  // show data 1

  PVector prev = new PVector(-1, -1); 
  int y=50; 

  if (activeArrayListHasNumber==0) {
    stroke(255, 2, 2); // RED
    line (10, 10, 198, 10);
  }

  for (PVector pv : points1) {

    if (showText) {
      fill(255, 2, 2); // RED 
      // show data
      text(pv.x, 30, y); 
      text(pv.y, 110, y);
    }

    fill(0, 2, 2); 
    stroke(255, 2, 2); // RED 
    float yvalue = map( pv.y, 0, height, 300, 355); 
    if (prev.x!=-1) {
      line(10 + pv.x*3, yvalue, 
        prev.x, prev.y);
    }
    noStroke(); 
    // ellipse (10 + pv.x*3, yvalue, 4, 4);
    prev = new PVector(10 + pv.x*3, yvalue); 


    y+=20; //next line
  }//for

  if (showText) {
    // middle line 
    stroke(255, 2, 2); // RED 
    line( 100, 30, 100, height);

    // double middle lines!!!   
    stroke(0); // BLACK 
    int x1=200; 
    line( x1-2, 30, x1-2, height); 
    line( x1+2, 30, x1+2, height);
  }
  //
}

void showData2() {
  //
  // show data 2 

  if (activeArrayListHasNumber==1) {
    // activeArrayListHasNumber is FALSE, right side is active
    stroke(2, 255, 2); // GREEN
    line (200, 10, 
      350, 10);
  }

  PVector prev = new PVector(-1, -1); 
  int y=50; 
  for (PVector pv : points2) {

    if (showText) {
      fill(0, 255, 2); // GREEN 
      // show data
      text(pv.x, 210, y); 
      text(pv.y, 210+80, y);
    }

    fill(0, 2, 2); 
    stroke(0, 255, 2); // GREEN 
    float yvalue = map( pv.y, 0, height, 300, 355); 
    if (prev.x!=-1) {
      line(10 + pv.x*3, yvalue, 
        prev.x, prev.y);
    }
    noStroke(); 
    //   ellipse (10 + pv.x*3, yvalue, 4, 4);
    prev = new PVector(10 + pv.x*3, yvalue); 

    y+=20; //next line
  }//for

  if (showText) {
    // middle line 
    stroke(0, 255, 2); // GREEN 
    line( 288, 30, 288, height);

    // double middle lines!!!   
    stroke(0); // BLACK 
    int x1=210+80+80; 
    line( x1-2, 30, x1-2, height); 
    line( x1+2, 30, x1+2, height);
  }
  //
}

void showData3() {
  //
  // show data 3

  color col3 = color(0, 2, 255); // BLUE 

  if (activeArrayListHasNumber==2) {
    // activeArrayListHasNumber is FALSE, right side is active
    stroke(col3); // 
    line (400, 10, 
      550, 10);
  }

  PVector prev = new PVector(-1, -1); 
  int y=50; 
  for (PVector pv : points3) {

    fill(col3); // Blue 

    if (showText) {
      // show data
      text(pv.x, 210+180, y); 
      text(pv.y, 210+180+80, y);
    }

    fill(0, 2, 2); 
    stroke(col3); // blue 
    float yvalue = map( pv.y, 0, height, 300, 355); 
    if (prev.x!=-1) {
      line(10 + pv.x*3, yvalue, 
        prev.x, prev.y);
    }
    noStroke(); 
    //   ellipse (10 + pv.x*3, yvalue, 4, 4);
    prev = new PVector(10 + pv.x*3, yvalue); 

    y+=20; //next line
  }//for

  if (showText) {
    // middle line 
    stroke(col3); // blue 
    line( 467, 30, 467, height);

    // double middle lines!!!   
    stroke(0); // BLACK 
    int x1=210+180+80+80; 
    line( x1-2, 30, x1-2, height); 
    line( x1+2, 30, x1+2, height);
  }
  //
}

void showData4() {
  //
  // show data 4 

  color col4 = color(155, 255, 112); 

  if (activeArrayListHasNumber==3) {
    // activeArrayListHasNumber is FALSE, right side is active
    stroke(col4); // 
    line (570, 10, 
      710, 10);
  }

  PVector prev = new PVector(-1, -1); 
  int y=50; 
  for (PVector pv : points4) {

    fill(col4); //  

    if (showText) {
      // show data
      text(pv.x, 210+180+180, y); 
      text(pv.y, 210+180+180+80, y);
    }

    fill(0, 2, 2); 
    stroke(col4); //  
    float yvalue = map( pv.y, 0, height, 300, 355); 
    if (prev.x!=-1) {
      line(10 + pv.x*3, yvalue, 
        prev.x, prev.y);
    }
    noStroke(); 
    //   ellipse (10 + pv.x*3, yvalue, 4, 4);
    prev = new PVector(10 + pv.x*3, yvalue); 

    y+=20; //next line
  }//for

  if (showText) {
    // middle line 
    stroke(col4); //  
    line( 210+180+180+80-4, 30, 210+180+180+80-4, height);
  }
  //
}

// ---------------------------------------------------------------

void serialEvent(Serial p) { 
  inString = p.readString(); 
  char primo=inString.charAt(0); // primo carattere
  String cifra=inString.substring(1); // da secondo carattere in poi
  float val=parseFloat(cifra); // valore da 0-255 o 0-1023, non sò cosa spedisce arduino


  print("val="); 
  println(val); 

  //   inString = trim(inString);

  //    // converte in int e mappa all'altezza dello schermo: 


  switch(primo) { 
    case ('A') : 
    myKnob1.setValue(val); 
    break; 
    case ('B') : 
    myKnob2.setValue(val); 
    break; 
    case ('C') : 
    myKnob3.setValue(val); 
    break; 
    case ('D') : 
    myKnob3.setValue(val); 
    break;
  }
}

void goBackToMainState() {

  // from help screen back to main screen

  // buttons ON 
  myKnob1.setVisible(true); 
  myKnob2.setVisible(true); 
  myKnob3.setVisible(true); 
  myKnob4.setVisible(true); 

  //go back to main screen 
  state=normal;

  // kill Esc so we stay in the program 
  key=0;
}

void  backspaceOnActiveList() {

  // for the key BACKSPACE 

  switch (activeArrayListHasNumber) {

  case 0:
    if (points1.size()>0)
      points1.remove(points1.size()-1);
    break; 

  case 1:
    if (points2.size()>0)
      points2.remove(points2.size()-1);
    break;

  case 2:
    if (points3.size()>0)
      points3.remove(points3.size()-1);
    break;

  case 3:
    if (points4.size()>0)
      points4.remove(points4.size()-1);
    break;
  }//switch
  //
}//func 

// ------------------------------------------------
// tools

String nameFromPath(String fileName1) {

  File file = new File(fileName1);
  String result = file.getName();
  return result;
} //func 
//

you are not making progress

only I make progress

can you read arduino data and fill in table 1 please?

serial arduino1;
serial arduino2;

void serialEvent(Serial serialObj) {

  if(serialObj == arduino1)
     //Data from first arduino


  if(serialObj == arduino2)
     //Data from second unit
}

Kf

Don’t you need one port per arduino?

Hi,

I'm a student new to coding and am trying to get two arduinos, (connected via serial port) to change the colour of two different ellipses on processing. Both arduinos have a simple push button.

One ellipse changes colour when one arduino button is pressed (this part is fine) But when I start to introduce the second arduino the coloured ellipses just flash quickly between the colours.

Is there a way to connect the two arduinos successfully? My code is posted below.

Thank you, Jade 

import processing.serial.*;

import processing.serial.*; Serial port; Serial portss; PImage[] img = new PImage[1]; int val = 0;

void setup () { size (1000, 707);

img [0] = loadImage ("nocolouredblobs.jpg"); background(img [0]);

fill(#459839);
ellipse(931,68,75,75);

port = new Serial(this, Serial.list()[3], 9600); }

void draw() { if (port.available() > 0) { val = port.read(); }

if (val == 2) { fill (#EDB137); ellipse (833, 68, 75, 75); fill (#FFDE9B); ellipse (931,68,75,75); } else { fill (#459839); ellipse (833, 68, 75, 75); fill (#459839); ellipse (931,68,75,75); }

}

Well, doing some research I now think that the best option could be using launch()to open the file on an external player (like VLC). It would be awesome to have some kind of communication with the player, I found posts about an old library for Processing 1 called RemoteVLC, is there a modern option to control the player from Processing? (to know, for example, when a video starts or finishes playing)

I still need to use Processing (or something similar) to send synchronized info via serial to an Arduino while the video is playing.