RGB Led and processing

Development Tools IDE 1.x
1

Hi, i followed everything in this blog to make an rgb led but i have a problem with processing
blog : Labs
error :

WARNING:  RXTX Version mismatch
	Jar version = RXTX-2.2pre1
	native lib Version = RXTX-2.2pre2
[0] "COM3"
Exception in thread "Animation Thread" java.lang.ArrayIndexOutOfBoundsException: 1
	at sketch_may22a.setup(sketch_may22a.java:48)
	at processing.core.PApplet.handleDraw(Unknown Source)
	at processing.core.PApplet.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:662)
WARNING:  RXTX Version mismatch
	Jar version = RXTX-2.2pre1
	native lib Version = RXTX-2.2pre2
[0] "COM3"
Exception in thread "Animation Thread" java.lang.ArrayIndexOutOfBoundsException: 1
	at sketch_may22b.setup(sketch_may22b.java:48)
	at processing.core.PApplet.handleDraw(Unknown Source)
	at processing.core.PApplet.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:662)
2

I think the problem is this:

 println(Serial.list());
  port = new Serial(this, Serial.list()[1], 9600);

Your output shows that there is only one element in the list of serial ports. Element 0. Then the code tries to use element 1. That's going to fail.

3

so what should i do?
do you have another tutorial to make an rgb led work with arduino?

4

I would change it to:

 println(Serial.list());
  port = new Serial(this, Serial.list()[0], 9600);
5

It's working thank you :slight_smile:
do you know any better procceing code for rgb led control?