Hi, we're completely lost with Processing (and Arduino). Basically we're using a heat sensor and depending on what range the temperature is in, it'll show a different image. Our problem is that it'll only show the first image based on the first reading, and even if the temperature changes to fit into the other range, the image will remain the same. We want the image to change each time it switches ranges.

We're new to this and we've searched the Reference and looked up similar codes and we're STILL lost. If someone could help us, that would be great! Here's our code:




import processing.serial.*;

String portName= "/dev/tty.usbserial-A3000YM6"; //declare the name of the port
Serial port;

PImage a;
PImage b;
      int reading = 0;

void setup()
{

size(100, 100);
PImage a;
a = loadImage("helmet_green.jpg");
 image(a, 0, 0);
 
PImage b;
b = loadImage("helmet2.jpg");
image(b, 0, 0);
 
 println("Available serial ports:");
 println(Serial.list());

 // Uses the first available port
 port = new Serial(this, portName, 9600);


}

void draw()
{
   int reading = 0;
   while (port.available() > 0)
   {
   reading = port.read();
   
   if(reading < 62)
   {

    b = loadImage("helmet2.jpg");
    image(b, 0, 0);
    println("Show image 1");
    delay(1000);
   }
   else if(reading >= 62)
   {
   
    a = loadImage("helmet_green.jpg");
    image(a, 0, 0);
    println("Show image 2");
    delay(1000);
     
   }
   println(reading);
   reading = 0;
 }


}



Thanks in advance for any help you can offer us!

hey,

thanks for the response. i think we've decided to ditch that idea all together as the sensor we were using barely works and
that code was just so much trouble.

but thank you so much anyway for the help.