import processing.serial.*;
import cc.arduino.*;

Arduino mojeArduino;
int led = 13;
int pot = 0;

void setup() {
    size(500,500);
  
    println(Arduino.list());
    mojeArduino = new Arduino(this, Arduino.list()[0], 57600);
}

void draw() {
    background(0);
    int hodnota = mojeArduino.analogRead(pot);
    ellipse(250, 250, hodnota/3, hodnota/3);
    mojeArduino.analogWrite(led, hodnota/4);
}