ofVideo with Arduino + Peltier cell:issue on playing video

beginners
#1

Hi everyone,

I’m trying to use Peltier cell as video controller. while you touch it, video plays on openFrameworks.

it’s almost working, but after pushing start button video plays for 3-5 second then it works perfectly. I have no idea why it’s happen. could you help to fix this problem?

here is video which shows this problem

my header code is as following

#pragma once

#include "ofMain.h"
//#include "ofEvents.h"

#define NUM_PARTICLES 30000
class ofApp :smile:
public ofBaseApp{
 
public:
    
    void setup();
    void update();
    void draw();
    
    
    
    void setupArduino(const int & version);
    void updateArduino();
    
    ofVideoPlayer fingersMovie;
    
    ofArduino ard;
    bool bSetupArduino;
    
    bool isStarted;
};

and here is main code

#include "ofApp.h"



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

void ofApp::setup(){
    ofSetVerticalSync(true);
    ofSetFrameRate(60);
    ofBackgroundHex(0x000000);
    
    ofBackground(0,0,0); ofEnableSmoothing(); //画面の混色の設定を加算合成にする
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE);
    fingersMovie.loadMovie("fingers.mov");
    //fingersMovie.play();

    ard.connect("/dev/tty.usbmodem1411", 57600);
    ofAddListener(ard.EInitialized, this, &ofApp::setupArduino);
    bSetupArduino	= false;
    
}



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

void ofApp::update(){
    
    fingersMovie.update();
    updateArduino();
    
}



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

void ofApp::setupArduino(const int & version) {

    ofRemoveListener(ard.EInitialized, this, &ofApp::setupArduino);
    

    for (int i = 0; i < 6; i++) {
        
        ard.sendAnalogPinReporting(i, ARD_ANALOG);
        
    }
    
    
    
    // 接続の確立のフラグをtrueに
    
    bSetupArduino = true;
    
}



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

void ofApp::updateArduino(){
    
    ard.update();
    
}



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

void ofApp::draw(){
    
    int input = ard.getAnalog(0);
    fingersMovie.draw(20, 100);
    //温度によって数字を変える
    if(input > 3 ){
        fingersMovie.play();
    } else {
        fingersMovie.setPaused(true);
    }
    
    
    //デバッグ用
    if (bSetupArduino){
        
        string msg = "";
        
        for (int i = 0; i < 6; i++) {
            msg += "Analog IN " + ofToString(i, 0)
            + " : " + ofToString(ard.getAnalog(i), 0) + "\n";
        }
        
        ofSetHexColor(0xFFFFFF);
        ofDrawBitmapString(msg, 20, 20);
    }
}

Thanks,