/* 
Datalogger - modified Tom Igoe Datalogger Code 
and from Nont: http://itp.nyu.edu/physcomp/sensors/Class/Sl974 
*/ 

import processing.serial.*; 

Serial myPort; // The serial port 

// initial variables: 
int i = 2; // counter 
int inByte = -1; // data from serial port 

void setup () { 
size(350, 280); // window size 

// List all the available serial ports 
println(Serial.list()); 

//I use COM4 so I open Serial.List()[1] 
myPort = new Serial(this, Serial.list()[0], 16468); 

// set inital background: 
background(255); 

} void draw () { 

if (myPort.available() > 0) { 
inByte = myPort.read(); 
serialEvent(); 
} 

} 

void serialEvent () { 

// draw the line: 
stroke(255,2,2); 
line(i, height, i, (height - inByte)-20); 
println (inByte); 
// at the edge of the screen, go back to the beginning: 
if (i >= width) { 
i = 0; 
background(100); 
} 
else { 
i++; 
} 

}