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March 27, 2012 19:41
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VirtualColorMixer - Arduino-Processing communication example from http://arduino.cc/en/Tutorial/VirtualColorMixer
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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)); | |
} |
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// 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 | |
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); | |
} | |
} | |
} |
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