Program Arduino Virtual Color Mixer

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/*
  This example reads three analog sensors (potentiometers are easiest)
 and sends their values serially. The Processing and Max/MSP programs at the bottom
 take those three values and use them to change the background color of the screen.

 The circuit:
 * potentiometers attached to analog inputs 0, 1, and 2

 http://www.arduino.cc/en/Tutorial/VirtualColorMixer

 created 2 Dec 2006
 by David A. Mellis
 modified 30 Aug 2011
 by Tom Igoe and Scott Fitzgerald

  This example code is in the public domain.
 */

const int redPin = A0;  // sensor to control red color
const int greenPin = A1; // sensor to control green color
const int bluePin = A2;  // sensor to control blue color

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

void loop() {
  Serial.print(analogRead(redPin));
  Serial.print(",");
  Serial.print(analogRead(greenPin));
  Serial.print(",");
  Serial.println(analogRead(bluePin));
}

/* Processing code for this example

//  This example code is in the public domain.

import processing.serial.*;

float redValue = 0;        // red value
float greenValue = 0;      // green value
float blueValue = 0;       // blue value

Serial myPort;

void setup() {
  size(200, 200);

  // List all the available serial ports
  // if using Processing 2.1 or later, use Serial.printArray()
  println(Serial.list());

  // I know that the first port in the serial list on my mac
  // is always my  Arduino, so I open Serial.list()[0].
  // Open whatever port is the one you're using.
  myPort = new Serial(this, Serial.list()[0], 9600);
  // don't generate a serialEvent() unless you get a newline character:
  myPort.bufferUntil('\n');
}

void draw() {
  // set the background color with the color values:
  background(redValue, greenValue, blueValue);
}

void serialEvent(Serial myPort) {
  // get the ASCII string:
  String inString = myPort.readStringUntil('\n');

  if (inString != null) {
    // trim off any whitespace:
    inString = trim(inString);
    // split the string on the commas and convert the
    // resulting substrings into an integer array:
    float[] colors = float(split(inString, ","));
    // if the array has at least three elements, you know
    // you got the whole thing.  Put the numbers in the
    // color variables:
    if (colors.length >=3) {
      // map them to the range 0-255:
      redValue = map(colors[0], 0, 1023, 0, 255);
      greenValue = map(colors[1], 0, 1023, 0, 255);
      blueValue = map(colors[2], 0, 1023, 0, 255);
    }
  }
}

 */

/* Max/MSP patch for this example

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-----------end_max5_patcher-----------


 */

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