const int anPin1 = 0;
long distance1;

void setup() {
  Serial.begin(9600);  // sets the serial port to 9600
}

void read_sensors(){
  /*
  Scale factor is (Vcc/512) per inch. A 5V supply yields ~9.8mV/in
  Arduino analog pin goes from 0 to 1024, so the value has to be divided by 2 to get the actual inches
  */
  distance1 = analogRead(anPin1)/2;
}

void print_all(){
  /*
  Serial.print("S1");
  Serial.print("inches");
  */
  Serial.print(" ");
  Serial.print(distance1);
  Serial.println();
}

void loop() {
  read_sensors();
  print_all();
  delay(50); 
}

And for Processing:

import processing.serial.*;  
Serial myPort;  
String data="" ;
PFont  myFont;  
int distance;

void setup(){
  size(1366,900); // size of processing window
  //background(0);// setting background color to black

  myPort = new Serial(this, "/dev/cu.usbmodemfd111", 9600);
  myPort.bufferUntil('\n');
}

void draw(){

  background(0);
  textAlign(CENTER);
  fill(255);
  text(data,820,400);
  textSize(100);
  fill(#4B5DCE);
  text("              Distance :        cm",450,400);
  noFill();
  stroke(#4B5DCE);

}

void serialEvent(Serial myPort){

  data=myPort.readStringUntil('\n');

}

And this distance reading works perfect!

Unfortunately didn’t found any specific example for what i am looking for. So the question is, how can I get, for example, 3 pictures working this way:

if(distance>60){
image(photo1, 0, 0); //display first photograpgy
}
else if (40<distance<60) {
image(photo2, 0, 0);
}
else if (distance<40) {
image(photo3, 0, 0);
}

Do I have to write something like that in draw ()? And how can I get income distance value as number from which depends displayed image? And should I upload any specific library for this? Do i have to write something also again in Arduino code?

Would be great if someone could suggest any examples or codes for this.

Hoping for advise, komats!!

// qrng.anu.edu.au

QRND qrnd=new QRND();

void setup() {
  noLoop();
  for (int i=0; i<1024; i++){
    int r=qrnd.nextInt();
    println(r);
    println(hex(r));
    println(binary(r));
  }
}

class QRND {
  int pos;
  int[] rData=new int[512];

  int nextInt() {
    if (pos==0) {
      JSONObject json=loadJSONObject("https://" + "qrng.anu.edu.au/API/jsonI.php?length=1024&type=uint16");
      String[] tok=splitTokens(json.toString(), "[,");
      for (int i=0; i<512; i++) {
        rData[i]=(int(trim(tok[i*2+1]))<<16) | int(trim(tok[i*2+2]));
      }
    }
    int r=rData[pos];
    pos=(pos+1) & 511;
    return r;
  }
}

void serialEvent(Serial p) { message = myPort.readStringUntil(124); if (message != null) { int messageLength = message.length(); message = message.substring(0, messageLength - 1); println(message); try { elements = split(message, ":"); println(elements[0]+"????"); println(elements[0].equals("Panel")); if (elements[0].equals("Panel") == true) { panel = int (elements[1]); println("Panel = " + str(panel)); } } catch (Exception e) { } } }

Print out to Console:

`Panel:1 Panel???? true Panel = 1

Panel:2

Panel???? false

`

Why the second time 'elements[0].equals("Panel")' is false?

Sincerly Jörg

My problem is when it receive "node1" from sender through xbee, the condition is aborted.. BUT, when i manually write in serial, the condition is worked.. i think the data sent by sender is not actually "node1"..even when i Serial.print(), it shows ""node1" physically.

this is receiver node:

I am trying to run the very basic "graph" tutorial off of an arduino. (https://www.arduino.cc/en/Tutorial/Graph). I have a simple circuit with a potentiometer.

When I run this processing code, I get the following error:

map(NaN, 0, 1023, 0, 300) called, which returns NaN (not a number)

Weird. But if I type "println(inByte)" after my map line, the console shows me changing potentiometer values just fine. No error. Also, I should say the pop-out window which is supposed to graph my moving values is black, and never shows any sort of graph. Thanks again for all your help -

I'm on Linux kubuntu. I would like receive data from an arduino nano (3 axis motion for head tracking). The arduino code works because I can read data with Pure Data (Pd). The arduino is on port [32] (/dev/ttyUSB0)

I use the common code:

// Example by Tom Igoe

import processing.serial.*;

int lf = 10;    // Linefeed in ASCII
String myString = null;
Serial myPort;  // The serial port

void setup() {
  // List all the available serial ports
  printArray(Serial.list());
  // Open the port you are using at the rate you want:
  myPort = new Serial(this, Serial.list()[32], 9600);
  myPort.clear();
  // Throw out the first reading, in case we started reading 
  // in the middle of a string from the sender.
  myString = myPort.readStringUntil(lf);  
  myString = null;
}

void draw() {
  println(myPort.available());

  while (myPort.available() > 0) {
    myString = myPort.readStringUntil(lf);
    if (myString != null) {
      println(myString);
    }
  }
}

But myPort.available is always 0. I can't read anything.

Can someone help me ?

thanks

In summary, this is the goal: - I push a button (BTN01) on Arduino, my computer plays Sound01A - I flick a swicth (BTN02) on Arduino, it plays Sound02A or Sound02B (depending on it's state) - There will be many, many buttons...

I have a few questions:

1) Is the best method of wiring each button (with two pins) GND and corresponding Digital Input Pin? Do I need a pullup resistor? (I'm testing on Uno but finalising on Mega) ** 2)** Should use "serial.print" or "serial write" in the Arduino code?

3) How should I best label each button state in Arduino that is sent via serial? I was thinking 01a, 01b, 02a, 02b, etc (number is the button/pin, letter is the state eg pushed or not)

4) Should I use some kind of array to m ake the code easier to create and work with? Or should I just have lots of separate if statements (one for each button)?

5) What would be the recommended/ simplest method of receiving the serial inputs in processing?

Arduino is from a library NewPing // --------------------------------------------------------------------------- // Example NewPing library sketch that does a ping about 20 times per second. // ---------------------------------------------------------------------------

#include <NewPing.h>

#define TRIGGER_PIN  12  // Arduino pin tied to trigger pin on the ultrasonic sensor.
#define ECHO_PIN     11  // Arduino pin tied to echo pin on the ultrasonic sensor.
#define MAX_DISTANCE 400 // Maximum distance we want to ping for (in centimeters). Maximum sensor distance is rated at 400-500cm.

NewPing sonar(TRIGGER_PIN, ECHO_PIN, MAX_DISTANCE); // NewPing setup of pins and maximum distance.

void setup() {
  Serial.begin(115200); // Open serial monitor at 115200 baud to see ping results.
}

void loop() {
  delay(50);                      // Wait 50ms between pings (about 20 pings/sec). 29ms should be the shortest delay between pings.
  unsigned int uS = sonar.ping(); // Send ping, get ping time in microseconds (uS).
  Serial.print("Ping: ");
  Serial.print(uS / US_ROUNDTRIP_CM); // Convert ping time to distance and print result (0 = outside set distance range, no ping echo)
  Serial.println("cm");
}

Processing

// Video
import processing.video.*;
Movie movie;

// Image
PImage img;  // Declare variable "a" of type PImage

// Serial
import processing.serial.*;
Serial myPort;  // Create object from Serial class
int val;      // Data received from the serial port


void setup() {
  size(640, 360);
  background(0);

  printArray(Serial.list());
  String portName = Serial.list()[1];
  myPort = new Serial(this, portName, 115200);

  // Load and play the video in a loop
  movie = new Movie(this, "transit.mov");
  movie.loop();
  img = loadImage("moonwalk.jpg");  // Load the image into the program
}

void movieEvent(Movie m) {
  m.read();
}

void draw() {
  if (movie.available() == true) {
    movie.read(); 
  }
  image(movie, 0, 0, width, height);

  if ( myPort.available() > 0) {  // If data is available,
    val = myPort.read();         // read it and store it in val
  }  


  if (val>130) {
    image(img, 0, 0);
  } else {
    image(movie, 0, 0, width, height);
  }
  println(val);
}

I'm trying to import readings from a Flexiforce sensor however, the values in processing are different than the ones displayed in the Arduino serial monitor but they somehow respond to any force applied on the sensor.

Could anyone clarify what's going on?

Thanks in advance :)

Arduino Code:

void setup()
{
  // Start serial at 9600 baud
  Serial.begin(9600);
}

void loop()
{
  // Read the input on analog pin 0:
  int sensorValue = analogRead(A0);

  //Serial.println(sensorValue);
  Serial.write(sensorValue);

  // Wait 100 milliseconds
  delay(100);
}

Serial Monitor Value (150gr):

    330
    330
    330
    330
    330
    330
    331
    330
    330
    330
    330
    329
    330
    330
    330
    330
    330
    330
    330
    331

Processing Code:

import processing.serial.*; 

Serial port;                             // Create object from Serial class 
int val = 0;

void setup() { 
  size(200, 200); 
  frameRate(10); 
  // Open the port that the board is connected to and use the same speed (9600 bps) 
  printArray(Serial.list());
  port = new Serial(this, Serial.list()[3], 9600);
} 

void draw() { 

  if (0 < port.available()) {         // If data is available,
    val = port.read();     // read it and store it in val
  }

  background(255);                       // Set background to white
  println(val);
  float dia = map(val, 0, 300, height*0.1, height*0.9);
  fill(0);
  ellipse(width*0.5, height*0.5, dia, dia);
} 

Processing Println Values (150gr):

    88
    88
    87
    88
    88
    88
    88
    89
    88
    88
    88
    88
    88
    88
    87

receive: "56871833174353 -0.095239157733537" from 192.168.178.52 on port 50396

void receive( byte[] data, String ip, int port ) {
  data = subset(data, 0, data.length-2);
  String message = new String( data );
  println( "receive: \""+message+"\" from "+ip+" on port "+port );
}

import processing.serial.*; //import the Serial library

Serial myPort;  //the Serial port object

PImage img;

void setup()
{

  size(182,262);  //This is the size of the canvas and the range of the printer
  // Make a new instance of a PImage by loading an image file
  img = loadImage("parel.bmp");
  tint(255,100);
  image (img,0,0);

}


void draw()
{ 
  color pix = img.get(mouseX, mouseY);
  stroke(pix);
  point(mouseX, mouseY);
}

So I am trying to expand this sketch by receiving pixel data from my arduino. I wrote a little arduino sketch that systematically sends all the pixel coordinates in the bitmap mentioned above over serial. And that seems to work too. But Processing is giving me some trouble here when I try to receive the coordinates over serial. Here's the sketch:

import processing.serial.*; //import the Serial library

Serial myPort;  //the Serial port object
String strIn = "";  //Declare a string with name str_in, this will store the coordinates received from the arduino
String portName = "";  //apparently this is necessary
int coordinates;
int locX= 0;
int locY= 0;

PImage img;

void setup()
{

  size(182,262);  //This is the size of the canvas and the range of the printer
  // Make a new instance of a PImage by loading an image file
  img = loadImage("parel.bmp");
  tint(255,100);
  image (img,0,0);
  String portName = Serial.list()[0];
  myPort = new Serial(this, portName,9600);
}


void draw()
{ 
  while (myPort.available() > 0) {                 // If data is available,
  strIn = myPort.readStringUntil('\n');         // read it and store it in a string called strIn
  } 
  int[] coordinates = int(split(strIn, ","));   
  //This should cut the strIn string in two integers, separated by a space 
  //and called coordinates. We expect a message coming in something like "XXX YYY"
  int locX = coordinates[0];        //This says that the first integer is an integer called LocX
  int locY = coordinates[1];       //This says that the first integer is an integer called LocX
  color pix = img.get(locX, locY);
  stroke(pix);
  point(locX, locY);
}

The debugger tells me it stores the incoming serial message in the strIn string, but locX and locY remain at 0. If I run the sketch without the debugger I get an arrayindexoutofboundsexception in line 34, which I think means it doesn't store anything in LocY. From what I read on this forum, I get that serial communication is troubling a lot more people than just me, but I can't find what the problem is. So if anybody has any ideas, you'd be a great help. My bitmap image is attached here as well.

So far I tested both the gyroscope and the vibration sensor separately and it worked just fine. Since I've tried to combine them i've been getting this error message: ArrayIndexOutOfBoundsException: 1 and the line 53: float roty = (sensors[1]*10); is highlighted at the same time

I assume there is a problem with myString content, or I guess with the string access and my sensors declaration but I can't figure out what to do. I've been learning code for a very short time, please have mercy on my inaccuracies ^^
(i'm french so comments are mostly in french,let me know if you need me to explain myself) Thank you so much for your help !!!

    import glitchP5.*; //import Glitch P5
    String portName = "/dev/cu.usbmodem1421"; 
    import processing.serial.*;
    String serial; 
    Serial myPort;
    int linefeed = 10; 
    int numSensors = 3; 
    float[] sensors;
    float[] pSensors;
    float bornexinf=0; 
    float bornexsup=0;
    float borneyinf=0; 
    float borneysup=0; 
    float rotxold=0; 
    float rotyold=0; 
    // vibration
    int end = 10;    //Le nombre 10 en ASCII pour linefeed marquant la fin du serial.println
    GlitchP5 glitchP5; // declare an instance of GlitchP5. only one is needed
    int j=0; //variable d'incrémentation carré dans carré
    int max=1; //nombre d'itération, soit le nb de carrés dans le carré
    int longueur=10; // longueur du carré 
    int largeur=10; //largeur du carré
    float value=0; //variable pour la rotation
    float mouseXold=displayWidth/2;
    float mouseYold=displayHeight/2;

    void setup() {

     size(displayWidth, displayHeight);
     background (255);
     smooth();

      myPort = new Serial(this, portName, 9600);
      myPort.bufferUntil(linefeed);
      serial = myPort.readStringUntil(end); // fonction qui lit la chaine de caractères depuis le port série jusqu'à println et ensuite assigne string à notre variable qui appelle serial
      serial = null; // initialisation de serial
     glitchP5 = new GlitchP5(this);
    }


    void draw() {

      while (myPort.available() > 0) { //tant qu'il n'y a pas de données provenant du port on lit l'entrée série
        serial = myPort.readStringUntil(end);
      }
        if (serial != null) {  
          String[] a = split(serial, ','); //on créé un tableau qui définit une chaine séparée par des virgules. 
          println(a[0]); //on affiche la première valeur du tableau
        }

      if((pSensors != null)&&(sensors != null)) { 
        float  rotx = (sensors[0]*10);
        float  roty = (sensors[1]*10);
        float  rotz = (sensors[2]*PI)/180;

    strokeWeight(1);
    noFill(); 
    stroke(random(255),random(255),random(255));
    translate(500,150);
    rectMode(CENTER);


    for(j=0;j<max;j++){
        longueur=longueur+1; 
        largeur=largeur+1; 
        translate(width/2, height/2);
        rotate(value);
        translate(-width/2, -height/2);
        rect(rotx,roty,longueur,largeur); 
        redraw();
        bornexinf=rotxold-10; 
        bornexsup=rotxold+10;
        borneyinf=rotyold-10; 
        borneysup=rotyold+10; 
        if(bornexinf>rotx || rotx>bornexsup || borneyinf>roty || roty>borneysup){
        longueur=5;
        largeur=5;
        }
        rotxold=rotx;
        rotyold=roty;
    }
      }
     glitchP5.run();
    }


    void serialEvent(Serial myPort) {


      String myString = myPort.readStringUntil(linefeed);
      if (myString != null) {
              myString = trim(myString);
              pSensors = sensors;
              sensors = float(split(myString, ','));

                     for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++) {
                     print("Sensor" + sensorNum + ": " + sensors[sensorNum] + "\t");
        }
        println();
      }
    }

    void mousePressed() //===> Will be triggered by the vibration sensor : if =0 do nothing; if =1 glitch; //
    {
     glitchP5.glitch(mouseX, mouseY, 200, 400, 200, 60, 120, 10.0f, 20, 1);
    }

I have this SparkFun RFID Starter Kit (https://www.sparkfun.com/products/13198?_ga=1.242738306.1686357739.1444361942), I followed the steps in the HookUp guide (https://learn.sparkfun.com/tutorials/sparkfun-rfid-starter-kit-hookup-guide?_ga=1.177165093.1278763627.1444260091), and It seems that is working fine, although I'm not getting the same reads as the guide.

Example: The guide shows this screenshot of the Arduino serial port while reading the card:

And I get this value:

If I swipe the card another time, I get this reading:

What are those little squares? I guess is some kind of character but I don't know which, or why is there.

Any ideas?

I am also trying this RFID reader in Processing. To change a message in the screen if someone swipes the card.

Initial screen:

After one read:

The text "saldo en 0" should have changed to "deposito $50"", but it shouldn't.

Any ideas?

Thanks!!

The code:

import processing.serial.*;
Serial myPort;
String inString = "texto inicial";
String mensaje;

void setup () {
  size(400, 300);        
  println(Serial.list());
  myPort = new Serial(this, Serial.list()[0], 9600);
  myPort.bufferUntil('\n');
  background(0);
}
void draw () {
  background(0);
  String s = inString;
  String comparador = "4500B8C02A17";
  textSize(24);
  fill(100);
  text(s, height/3, width/3); 

  if (comparador.equals(s) == true) {
    mensaje = "deposito $50";
  } else {
    mensaje = "saldo en 0";
  }
  text(mensaje, height/3, width/3+30);
}

void serialEvent (Serial myPort) {
  inString = myPort.readStringUntil('\n');
}

any suggestions how I could merge my code below (movement tracing through for now a simple box) with e.g. this (http://studio.processingtogether.com/sp/pad/export/ro.9ldYvJUyiXGzi/latest) sketchpad code in which the trace fades slowly. I getting actual sensor data and am not using the mouse. I am trying to make the movement interpretation 'feel' more natural.

All suggestions or hints are super welcome Thank you already!!

import processing.serial.*;

Serial myPort;
int linefeed = 10; // Linefeed in ASCII int numSensors = 3; // we will be expecting for reading data from 3 sensors float sensors[]; // array to read the 3 values float pSensors[];

void setup() { size(1350, 800, P3D);
// List all the available serial ports in the output pane. // You will need to choose the port that the Wiring board is // connected to from this list. The first port in the list is // port #0 and the third port in the list is port #2. println(Serial.list());

myPort = new Serial(this, Serial.list()[2], 115200); // read bytes into a buffer until you get a linefeed (ASCII 10): myPort.bufferUntil(linefeed);

}

void draw() { if((pSensors != null)&&(sensors != null)) {

// now do something with the values read sensors[0] .. sensors[2]
 //First I find all my rotation angles in radians so that center screen is (0,0)

float rotx = (sensors[0]*PI)/180;
float roty = (sensors[1]*PI)/180;
float rotz = (sensors[2]*PI)/180;
//float roty = 0;

background(0);
stroke(0, 0, 200);
//line (0,20,420,20); // monitor bar
fill(255);
textSize(1);
text (" rotateX(" + rotx +" pi)"+" , rotateY("+roty+" pi)"+" , rotateZ("+rotz+" pi)", 0,10);
fill(0, 0, 200);

translate(610, 380, 0); // center drawing start point in screen  180 TO 380

strokeWeight(1);
stroke(50);

line(-60, 0, 60, 0);       //
line(0, 60, 0, -60);       // draw stationary axis lines
line(0, 0, -60, 0, 0, 60); //
strokeWeight(0); // PPP: STROKEWEIGHT VON 1 NACH 0
stroke(0, 150, 0);
noFill();
box(40);                  // draw stationary box


rotateX(rotx);  //
rotateY(roty);  // rotate drawing coordinates according to user input variables
rotateZ(rotz);  //
strokeWeight(0);
stroke(255);
line(10, 0, 10, 0);       //PPPP ALL PLACES WITH 50 USED TO BE 150
line(0, 10, 0, -10);       // draw the rotating axis lines
line(0, 0, -10, 0, 0, 10); //
strokeWeight(4);
stroke(57, 255, 20);
noFill();
box(100,60,350); // draw rotating red box PPPPP: CHANGED FROM 140!!!

} }

void serialEvent(Serial myPort) {

// read the serial buffer:2 String myString = myPort.readStringUntil(linefeed);

// if you got any bytes other than the linefeed: if (myString != null) {

myString = trim(myString);

// split the string at the commas
// and convert the sections into integers:

pSensors = sensors;
sensors = float(split(myString, ','));

// print out the values you got:

for (int sensorNum = 0; sensorNum < sensors.length; sensorNum++) {
  print("Sensor " + sensorNum + ": " + sensors[sensorNum] + "\t");
}

// add a linefeed after all the sensor values are printed:
println();

} }

//the code:

import processing.serial.*;
Serial myPort; 

Mover mover;

float inByte;

void setup(){
  size(800,600);
  background(240);
  smooth();
  mover = new Mover();

  myPort = new Serial(this,Serial.list()[2], 9600);
  myPort.bufferUntil('\n');
}


void draw(){
  background(240);
  mover.update();
  mover.checkEdges();
  mover.display();

  fill(10);

}

void serialEvent (Serial myPort){
  String inString = myPort.readStringUntil('\n');

  if(inString != null){
    inString = trim(inString);
    inByte = float(inString);
    inByte = map(inByte,0,1023,0,5);
  }
}


//newtab 
class Mover{
  PVector location;
  PVector velocity;
  PVector acceleration;
  float topspeed;

  Mover(){
    location = new PVector(width/2,height/2);
    velocity = new PVector(0,0);
    topspeed = 10;
  }

  void update(){
    acceleration = PVector.random2D();
    acceleration.mult(inByte);

    velocity.add(acceleration);
    velocity.limit(topspeed);
    location.add(velocity);
  }

  void display(){
    noStroke();
    fill(10);
    ellipse(location.x, location.y, 50, 50);

  }


void checkEdges(){
  if(location.x > width){
    location.x = 0;
  }
  else if (location.x < 0 ){
    location.x = width;
  }

  if(location.y > height){
    location.y = 0;
  }
  else if(location.x < 0){
    location.y = height;
  }
}
}

void setup() { //initialize serial communications at a 9600 baud rate

Serial.begin(9600); }

void loop() {

int num = random(0, 100);

Serial.println(num);

delay(100);

}

And here the Processing one:

import vsync.*;

import processing.serial.*;

Serial myPort;

void setup() {

myPort = new Serial(this, Serial.list()[0], 9600);

}

void draw() {

println(Serial.list());

delay(1000); }

I don't know if I am missing some libraries but I am kinda stocked for hours.

Thank you.

I am reading a string from serial port (from Arduino) and need to convert it to long. My code throws an exception every time - and catches it. Isn't the Long.parseLong(String) the way to parse string to long? :

String val; //global variable

[..]
and in draw():

 if ( myPort.available() > 0) 
  {  // If data is available,
  val = myPort.readStringUntil('\n');         // read it and store it in val
  println("Val=" + val);
  myPort.clear();
  } 

  // While Java's parseLong() throws an Exception:
  try {
   println("long l=" + Long.parseLong(val));
  } catch (NumberFormatException e) {
   println(val);
   println("can't be converted to a number!");
   }

  exit();

Many thanks in advance

My Arduino code:

 void setup() {
   // put your setup code here, to run once:
 Serial.begin(9600);
 }

 void loop() {
   for (int i =1;i<5;i++)
 {  Serial.println(float(i)+2.0);
 delay(1);
   // put your main code here, to run repeatedly:
 }
 }

The output according to the Serial monitor is 3.0,4.0,5.0,6.0 as expected.

Here's the processing code (Python Mode) that I use to read the data in

 def connect2Arduino(): 
     global arduinoPort
     arduinoPort= Serial(this, 'COM32',9600)

 def setup():
    background(0)
    connect2Arduino()

 def draw():
    global arduinoPort
    if arduinoPort.available()>0:
        dataIn = arduinoPort.readStringUntil(int(10))
        if (dataIn != None or int(dataIn) != 13):
            print dataIn  

The output from processing looks like this

4.00

5.00

6.00

3.00

4.00

5.‚j

6.°3.00

4.00

5.00

6.00

When I try to change the type of dataIn, an error pops up when output is 5.‚j which is as expected.

First of, I have no idea why these errors exist. I would like to know why it's showing up in the first place. Secondly, what's a fix? I could go print instead of println on my arduino code and maybe fix it, but I am looking for something better.

Thank you

I am in the process of hacking a rotary phone, using Arduino and Processing to convert the phone into a recording and playback device. It is a really interesting project and I have made some progress, but I got stuck on a string from the serial port. My code is long, so I will share my public gist here: https://gist.github.com/lizzybrooks/b88531b906860d4fc4af.

Here is the function that seems to be giving me trouble:

void readNumbers(){
if ( myPort.available() > 0) 
  {  
    // get the value from the serial port
    do{
    val = myPort.readStringUntil('\n');         // read it and store it in val 
    } while (val == null);

    // print every value received to the console so we know what we got
   // println(val);
   // println(val.length()); 

if (val.equals("6\r\n")){
      println("hooray. you work. let's play a different audio file");

      // anything else and its input from the phone
      // so do whatever you want if you receive input from the phone here...
    }

  }

If you have any ideas or can help me with syntax, I would so much appreciate it. I am a beginner coder working on a complicated project, but I am eager to learn.

Thanks so much!

Lizzy

          `import controlP5.*;
            import processing.serial.*;
            ControlP5 cP5a;
            ControlP5 cP5b;
            ControlP5 cP5c;
            ControlP5 cP5d;
            ControlP5 cP5e;
            ControlP5 cP5f;
            ControlP5 cP5g;
            ControlP5 cP5h;

            Serial arduino;
            String val;

            void setup() 
            {
              size(785, 520);
              println(Serial.list());
              arduino = new Serial(this, Serial.list()[0], 9600);

              cP5a = new ControlP5(this);
              cP5a.addSlider("ATUR_KECEPATAN_MOTOR_DC", 0, 255, 0, 30, 155, 350, 50);
              cP5b = new ControlP5(this);
              cP5b.addButton("FORWARD",1,30,220,100,40);
              cP5c = new ControlP5(this);
              cP5c.addButton("REVERSE",0,280,220,100,40);
              cP5d = new ControlP5(this);
              cP5d.addButton("BUKA_GERBANG",1,30,300,100,40);
              cP5e = new ControlP5(this);
              cP5e.addButton("TUTUP_GERBANG",1,30,355,100,40);
              cP5f = new ControlP5(this);
              cP5f.addSlider("SUDUT_SERVO", 0, 180, 0, 30, 435, 350, 50);
              cP5g = new ControlP5(this);
              cP5g.addButton("MASTER_ON",1,30,80,100,35);
              cP5h = new ControlP5(this);
              cP5h.addButton("MASTER_OFF",0,160,80,100,35);
            }

            void draw() 
            {
              background(#614DED);
              textSize(20);
              fill(#F5ED00);
              text("PENGENDALI MOTOR DC MOTOR STEPPER DAN MOTOR SERVO", 100, 30);
              textSize(18);
              text("KECEPATAN MOTOR DC :", 500, 140);
              textSize(18);
              text("FIANSYAH AFANDI RAKHMAN, TEKNIK ELEKTRO, UNIVERSITAS SILIWANGI TASIKMALAYA", 10,60);
              textSize(15);
              text("A. MOTOR DC", 15,140);
              textSize(15);
              text("B. MOTOR STEPPER", 15,285);
              textSize(15);
              text("C. MOTOR SERVO", 15,420);
              textSize(13);
              fill(#020108);
              text("created by: Fiansyah Afandi Rakhman", 545, 500);
              text("107002025/elektro2010", 617, 515);

              if (arduino.available() >0){
              val=arduino.readStringUntil('\n');}

              println(val);

            }

            void controlEvent(ControlEvent theEvent) {
              if(theEvent.isController()) {

              print("control event from : "+theEvent.controller().name());
              println(", value : "+theEvent.controller().value());

             if(theEvent.controller().name()=="ATUR_KECEPATAN_MOTOR_DC") {
               int val1 = int(theEvent.getController().getValue());
               arduino.write("a" + val1);
             }
             if(theEvent.controller().name()=="FORWARD") {
               int val2 = int(theEvent.getController().getValue());
              arduino.write("b" + val2 );
             }
             if(theEvent.controller().name()=="REVERSE") {
               int val3 = int(theEvent.getController().getValue());
               arduino.write("c" + val3);
                }
             if(theEvent.controller().name()=="BUKA_GERBANG") { 
                int val4 = int(theEvent.getController().getValue());
               arduino.write("d" + val4 );
             }
             if(theEvent.controller().name()=="TUTUP_GERBANG") { 
                int val5 = int(theEvent.getController().getValue());
              arduino.write("e" + val5 );
             }
             if(theEvent.controller().name()=="SUDUT_SERVO") {
               int val6 = int(theEvent.getController().getValue());
              arduino.write("f" + val6);  
             }
             if(theEvent.controller().name()=="MASTER_ON") {
               int val7 = int(theEvent.getController().getValue());
              arduino.write("g" + val7);
             }
             if(theEvent.controller().name()=="MASTER_OFF") {
               int val8 = int(theEvent.getController().getValue());
             arduino.write("h" + val8);
               }
              }
            }`

in this section :

    if (arduino.available() >0){
    val=arduino.readStringUntil('\n');}
    println(val);

when i added into :

        if (arduino.available() >0){
                                  val=arduino.readStringUntil('\n');}

                                  println(val);
                                textSize(18);
                                text(val, 500, 180);

there is an error, and there is written "could'nt run the sketch" and the problem is this section :

            text(val, 500, 180)

help me to solve this problem , how to correct sketch writing if you want to display a string on the run window . Thank you , any help would be greatly appreciated

The Arduino code sends text as a string when a function is called.

Processing reads these strings and acts accordingly.

I am trying to parse the strings based on the first three letters of each string element, then perform an action based on what the rest of the element says.

Example:

LOGstim off.

Processing reads this element, sees "LOG", saves everything after "LOG" as a new string named "log".

This part works fine. What I can't figure out is how to get processing to act after it creates this new string "log". I've managed to use match() to do what I want but its very bulky and involves creating about 30 separate strings, one for each instance of match().

I don't understand why log.equals("what I need matched") does not work. Here is an example of the processing code:

import processing.serial.*;

Serial myPort;
String dataReading = "";
String[] dataOutput = {
};
String log;

void setup() {
  size(100, 100);

  myPort = new Serial(this, Serial.list()[0], 9600);
  myPort.bufferUntil('\n');
}

void draw() {

}

void serialEvent(Serial myPort) {
  dataReading = myPort.readStringUntil('\n');
  println(dataReading);
  if (dataReading != null) {
    dataOutput = append(dataOutput, dataReading);
    if (dataReading.substring(0, 3).equals("LOG")) {
      log = dataReading.substring(3);
      println(log);
      if(dataReading.substring(3).equals("visual stim")) {
      //  String logVisStim = dataReading.substring(3); //here I tried to create a separate string for the substrings after LOG.
      //  println(logVisStim);//This is to test the line of code above.
        background(255);
      }else if(dataReading.substring(3).equals("vis left error")){
        background(0);
      }else{
        background(100);
      }
    }
  }
}

  void saveData() {
    println("saving to txt file...");
    saveStrings("data/data.txt", dataOutput);
  }


  void mousePressed() {
    saveData();
  }

Here is a copy of what is printed in the serial monitor.

CMDTVinitiation

LOGTVinitiation

TVinitiation

TIM279931

CMDtrialstart

LOGautostart

autostart //this is from println(log);

TIM280008

LOGstim right on

stim right on //this is from println(log);

TIM280039

LOGvisual stim

visual stim //this is from println(log);

TIM280040

TIM280140

LOGmissed your shot!

missed your shot! //this is from println(log);

TIM300008

LOGstim off

stim off //this is from println(log);

TIM300008

CMDsession stop R

CMDsession stop L

The formatting of the saved text is a bit garbled.

Processing code:

void draw() {
  background(50);
  textFont(t, 20);
  fill(255);

  readSerial();
  drawBenchA();
}


void drawBenchA() {

}

void readSerial() {
  if (mySerial.available ()>0 ) {
    String myString = mySerial.readStringUntil('\n');
    if (myString!=null) {
      for (int i = 0; i<myString.length (); i++) {
        Str1 [i] = myString.charAt(i);
      }
    }
    mySerial.clear();
  }

  for (int i = 0; i < 15; i++)
  {
    output.print(Str1[i]);
  }

  textFont(t, 16);
  fill(255);
}


void keyPressed() {
  output.flush();  // Writes the remaining data to the file
  output.close();  // Finishes the file
  exit();  // Stops the program
}

Text file: Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Start Bench A velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-velope: 127546-Seconds 27546-Seconds 27546------

        27546------

        27546------

        27546------

        27546------

        27546------

        27546------

        27546------

        27546------

        27546------

        27546------

        27546------

How it should appear:

Start
Bench A
Envelope 127546-2
5 Seconds
----------------------------

I think this can be fixed with serialEvent, but not sure how.

The code in Arduino is:

 /*
 * IRremote: IRrecvDemo - demonstrates receiving IR codes with IRrecv
 * An IR detector/demodulator must be connected to the input RECV_PIN.
 * Version 0.1 July, 2009
 * Copyright 2009 Ken Shirriff
 * http://arcfn.com
 */


 #include <IRremote.h>


 int RECV_PIN = 7;

 IRrecv irrecv(RECV_PIN);

 decode_results results;


 void setup() {

    Serial.begin(9600);

    irrecv.enableIRIn(); // Start the receiver  
}


void loop() {

  if (irrecv.decode(&results)) {

    Serial.println(results.value);

    irrecv.resume(); // Receive the next value

  }

  delay(100);

}

It reads the IR signals, and suppose, Now I want to get this at Processing and want to open a webpage for that.

 // Example by Tom Igoe

 import processing.serial.*;

 Serial myPort;    // The serial port

 String inString;  // Input string from serial port

 int lf = 10;      // ASCII linefeed


 void setup() {

    size(400,200);

    // List all the available serial ports:

    println(Serial.list());

    // Open the port you are using at the rate you want:hat 

    myPort = new Serial(this, "COM9", 9600);

    myPort.bufferUntil(lf);

 }

 void draw() {

   background(0);

   text("received: " + inString, 10,50);


 }

 void serialEvent(Serial p) {

   inString = p.readString();


   if(inString.equals("544993039")){

    String[] params = { "start www.google.com" };

    open(params);


   }
 }

`

But however even though the signal of that value is caught in the receiver, but the codes do not get executed! :/

I am 100% sure that the signal reaches the receiver as Arduino seems to do what I want it to do when I send signals, for example when I use this code: if(results.value == 544993039) { digitalWrite(8, HIGH); }

Anything connected to pin 8 seems to work just fine.

but in Processing:

if(inString.equals("544993039")){

        String[] params = { "start www.google.com" };

        open(params);


       }

Nothing seems to happen. Can anybody help me please?

import processing.serial.*;
Serial serialPort;
String input;

void setup() {
  serialPort = new Serial(this,"COM4",9600);
  serialPort.bufferUntil('\n'); }

void draw() {
  background(1);
}

void serialEvent(Serial serialPort) {
  input = serialPort.readString();
  for (int i=0 ; i<3; i++) {
  input = input + ",";
  }
println(input);
}

import processing.serial.*; PrintWriter output;

Serial myPort; void setup() { output= createWriter("data.txt"); myPort=new Serial(this,"COM1",9600); } void draw() { while(myPort.available()>0) { String rfid=myPort.readString(); if(rfid!=null) { output.println(rfid); } } } void keyPressed() { output.flush(); output.close(); exit(); }

  if ( port.available() > 0) {  // If data is available,
    //val = port.read();         // read it and store it in val

    String test[] = {
      "","","","",""
    };

    for (int i = 0; i < test.length; i++) {
      test[i] = str(char(port.read()));
    }
    println(test);
    if(test == "> I M G :") {
      println("yup");
    }

I can never figure out how to make Processing play nice with strings. I just want to take in the first 4 chars and see if combined they form ">IMG:"

Also, if the Arduino is sending serial data as HEX, is there anything special I need to do when reading via Processing to make sure it safely converts to a usable int of the same value?