Arduino + LDR Sensor + Processing

Vasco · May 2016

At the time i dont have the arduino or the light sensors, i will only work on that tomorrow =/. But at processing i'm trying some stuff. The idea is to have a video always in loop, but every time i take the light of a sensor (either if i put my finger on the sensor or a cloth) it show's another video, but when that sensor got light again it goes to the loop video.

This is what i got so far, still missing the keyPressed as a substitute of the sensors. The problem is the videos are all runing ate the same the time, and i've no idea how to do the keyPressing to call the other videos. Its the first time i'm using this library, and i really need help on this.

import processing.video.*;

String[] movieList = {"movie/x.mov", "movie/y.mov", "movie/w.mov", "movie/z.mov"};
Movie[] filmes = new Movie[movieList.length];

void setup() {
  size(1280, 720);
  //fullScreen();
  background (0);
  frameRate(60);

  for (int i = 0; i < movieList.length; i++)
  {
    filmes[i] = new Movie(this, movieList[i]);
    filmes[i].loop();
  }
}

void draw() 
{
  for (int i = 0; i < movieList.length; i++)
  {
    image(filmes[i], 0, 0);
  }
}

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

GoToLoop · May 2016

https://forum.Processing.org/two/discussions/tagged?Tag=movieevent()

Vasco · May 2016

I'm already trying to connect arduino with processing, but i'm stuck now. I will work with 5 LDR Sensor and i need to every time i take the light in one of the sensors, that sensor will show a Video. How do i do that? This is all the code i got so far.

I got a void keyPressed, cause at the time i was doing some tests

Arduino


//PIN AO QUAL O SENSOR ESTA LIGADO
int LDR = 0;
//GUARDA OS VALORES DADOS PELO SENSOR
int LDRValue = 0;
//VALOR APROXIMADO A LUZ EXPOSTA O SENSOR
int Light_sensitivity = 500;

void setup () {
  Serial.begin(9600);
  //LED PARA TESTARMOS, SE ACENDER QUANDO TAPARMOS LUZ DO SENSOR ESTA  A FUNCIONAR
  pinMode(13, OUTPUT);
}

void loop(){
  //LE OS VALORS DO SENSOR
  LDRValue = analogRead(LDR);
  //MOSTRA OS VALORES DADOS PELO SENSOR
  Serial.println(LDRValue);
  //VELOCIDADE MOSTRADA PELO SENSOR NA CONSOLA
  delay(50);

  if (LDRValue < Light_sensitivity) {
    digitalWrite(Light_sensitivity, HIGH);
  }
  else {
    digitalWrite(Light_sensitivity, LOW);
  }
}

Processing

import processing.serial.*;
import processing.video.*;

//ARDUINO

Serial arduinoPort;

int arduinoInputVideo1, arduinoInputVideo2, arduinoInputVideo3, arduinoInputVideo4;

//VIDEOS

Movie Video1;//#1
Movie Video2;//#2 
Movie Video3;//#3
Movie Video4;//#4

//DATA



boolean Vid1 = true;
boolean Vid2 = false;
boolean Vid3 = false;
boolean Vid4 = false;


void setup() { 
  //SETUP
  
  size(1280, 720);
  //fullScreen();
  background(0);
  frameRate(60);

  arduinoPort = new Serial (this, Serial.list()[2], 9600);
  arduinoPort.clear();


  Video1 = new Movie(this, "movie/x.mov");
  Video2 = new Movie(this, "movie/y.mov");
  Video3 = new Movie(this, "movie/w.mov");
  Video4 = new Movie(this, "movie/z.mov");
}



void draw() { 

  //VIDEO1
  if (Vid1) {
    Video1.loop(); //VIDEO1 FICA EM LOOP
    Video2.stop(); //VIDEO2 PARA
    Video3.stop(); //VIDEO3 PARA
    Video4.stop(); //VIDEO4 PARA
    image(Video1, 0, 0, width, height);
  }

  //VIDEO2
  if (Vid2) {
    Video1.stop(); //VIDEO1 PARA
    Video3.stop(); //VIDEO3 PARA
    Video4.stop(); //VIDEO4 PARA
    Video2.play(); //VIDEO2 COMEÇA A DAR
    image(Video2, 0, 0, width, height);
  }

  //VIDEO3
  if (Vid3) {
    Video1.stop(); //VIDEO1 PARA
    Video2.stop(); //VIDEO2 PARA
    Video4.stop(); //VIDEO4 PARA
    Video3.play(); //VIDEO3 COMEÇA A DAR
    image(Video3, 0, 0, width, height);
  }

  //VIDEO 4
  if (Vid4) {
    Video1.stop(); //VIDEO1 PARA
    Video2.stop(); //VIDEO2 PARA
    Video3.stop(); //VIDEO3 PARA
    Video4.play(); //VIDEO4 COMEÇA A DAR
    image(Video4, 0, 0, width, height);
  }
}

//FUNÇÃO "movieEvent" É CHAMADA SEMPRE QUE EXISTE UMA UMA FRAME NOVA PARA SER LIDA/VISTA
//SEM ISTO OS VIDEOS TB NÃO DÃO, OUVE-SE O SOM, MAS NÃO SE VÊ A IMAGEM
void movieEvent(Movie m) { 
  m.read();
}

void keyPressed() {

  //#1 POE O VIDEO1 A CORRER, PÕE TODOS OS RESTANTES PARADOS
  if (key == '1') {
    Vid1 = true;
    Vid2 = false;
    Vid3 = false;
    Vid4 = false;
  }

  //#2 POE O VIDEO2 A CORRER, PÕE TODOS OS RESTANTES PARADOS
  if (key == '2') {
    Vid1 = false;
    Vid2 = true;
    Vid3 = false;
    Vid4 = false;
  }

  //#3 POE O VIDEO3 A CORRER, PÕE TODOS OS RESTANTES PARADOS
  if (key == '3') {
    Vid1 = false;
    Vid2 = false;
    Vid3 = true;
    Vid4 = false;
  }

  //#4 POE O VIDEO4 A CORRER, PÕE TODOS OS RESTANTES PARADOS
  if (key == '4') {
    Vid1 = false;
    Vid2 = false;
    Vid3 = false;
    Vid4 = true;
  }
}

GoToLoop · May 2016

Arrays are our best friends. Shorten our code and allows us to use loops w/ numerical indices: O:-)
https://forum.Processing.org/two/discussion/8082/from-several-variables-to-arrays

Vasco · May 2016

So i've been changing my code in arduino. But i'm getting a problem i cant see resolve because e can't find my problem. When i run the code i always got the same numbers "1100". But what i want to see, is every time i put my finger on one of the LDR sensor is, " LDRValue1 A FUNCIONAR 1 " (i put the 1 here as an example).


#define LDRpin  7  //PIN ONDE O SENSOR LDR E A RESITENCIA ESTAO LIGADOS
#define LDRpin1 8  //PIN ONDE O SENSOR LDR E A RESITENCIA ESTAO LIGADOS
#define LDRpin2 12  //PIN ONDE O SENSOR LDR E A RESITENCIA ESTAO LIGADOS
#define LDRpin3 13 //PIN ONDE O SENSOR LDR E A RESITENCIA ESTAO LIGADOS

//VALORES PIN
int LDRValue  = 0;
int LDRValue1 = 0;
int LDRValue2 = 0;
int LDRValue3 = 0;

void setup () {
  Serial.begin(9600);

  pinMode(LDRpin,  INPUT);
  pinMode(LDRpin1, INPUT);
  pinMode(LDRpin2, INPUT);
  pinMode(LDRpin3, INPUT);
}

void loop() {
  //LE OS VALORES DO SENSOR
  LDRValue  = analogRead(LDRpin);
  LDRValue1 = analogRead(LDRpin1);
  LDRValue2 = analogRead(LDRpin2);
  LDRValue3 = analogRead(LDRpin3);

  //MOSTRA OS VALORES DADOS PELO SENSOR 0
  Serial.print(LDRValue);
  Serial.print(" ");

  //MOSTRA OS VALORES DADOS PELO SENSOR 1
  Serial.print(LDRValue1);
  Serial.print(" ");

  //MOSTRA OS VALORES DADOS PELO SENSOR 2
  Serial.print(LDRValue2);
  Serial.print(" ");

  //MOSTRA OS VALORES DADOS PELO SENSOR 3
  Serial.print(LDRValue3);
  Serial.print(" ");

  //TESTE PARA SABER SE TODOS OS SENSORES ESTAO A FUNCIONAR
  //LDRValue
  if ((LDRValue == 1) && (LDRValue1 == 0) && (LDRValue2 == 0) && (LDRValue3 == 0)) {
    Serial.print(" LDRValue0 A FUNCIONAR 0 ");
  }

  //LDRValue1
  if ((LDRValue == 0) && (LDRValue1 == 1) && (LDRValue2 == 0) && (LDRValue3 == 0)) {
    Serial.print(" LDRValue1 A FUNCIONAR 1 ");
  }

  //LDRValue2
  if ((LDRValue == 0) && (LDRValue1 == 0) && (LDRValue2 == 1) && (LDRValue3 == 0)) {
    Serial.print(" LDRValue2 A FUNCIONAR 2 ");
  }

  //LDRValue3
  if ((LDRValue == 0) && (LDRValue1 == 0) && (LDRValue2 == 0) && (LDRValue3 == 1)) {
    Serial.print(" LDRValue3 A FUNCIONAR 3 ");
  }
  //TEMPO DE RESPOSTA
delay(1000);
}

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