Homework 05 – Arduino & Processing – Josiah Song

14 Nov

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I created a simple circuit that uses the photoresistor to communicate between Arduino and Processing. I also changed the display color.

import processing.serial.*;
 
Serial myPort; // The serial port
int xPos = 1; // horizontal position of the graph

void setup () { // set the window size:
size(1000, 300);        

println(Serial.list());// List all the available serial ports
myPort = new Serial(this, Serial.list()[0], 9600); // don’t generate a serialEvent() unless you get a newline character:
myPort.bufferUntil(‘\n’);

background(0); // set inital background:
}
void draw () {
}
 
void serialEvent (Serial myPort) {// get the ASCII string:
 
String inString = myPort.readString();
 
if (inString != null) { // trim off any whitespace:

inString = trim(inString);// convert to an int and map to the screen height:
 
float inByte = float(inString);
inByte = map(inByte, 0, 1023, 0, height);//map incomming value to height of screen
 
stroke(50, 50 ,200 );// draw the line:
line(xPos, height, xPos, height – inByte);
 
// at the edge of the screen, go back to the beginning:
if (xPos >= width) {
xPos = 0;
background(0);
}
else {
// increment the horizontal position:
xPos++;
}
}
}

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