long timer1 = 0;            
int  timer1offset = 200;   
long timer2 = 0;          
int  timer2offset = 300;
long timer3 = 0;
int  timer3offset = 20;
long timer4 = 0;
int  timer4offset = 300;

int led1pin = 7;
int led2pin = 6;
int led3pin = 11;
int led4pin = 10;
                 
int pin1val = LOW; 
int pin2val = LOW;

int readPin = 4;
int readPinVal = 0;

void setup() {                  // The standard stuff...
    Serial.begin(9600);
    pinMode(led1pin, OUTPUT);  
    pinMode(led2pin, OUTPUT);
    pinMode(led3pin, OUTPUT);
    timer1 = millis();          
    timer2 = millis();
    timer3 = millis();
}


// Das Loop...
void loop() {
  // Timer 1
  if((timer1 + timer1offset) < millis() ) {
      timer1 = millis();
      pin1val = !pin1val;
  }else{
      doBlink(led1pin,pin1val);
  }
  // Timer 2
  readPinVal = analogRead(readPin);
  if((timer2 + readPinVal) < millis() ) {
      timer2 = millis();
      pin2val = !pin2val;
  }else{
      doBlink(led2pin,pin2val);
  }
  // Timer 3
  if ((timer3 + timer3offset) < millis() ) {
      doPWMled(led3pin, 128, 1);
      timer3 = millis();
    }
}
 
void doBlink(int whichPin, int whichVal) {
  digitalWrite(whichPin,whichVal);
}

int pinVal = 0;
int rampUp = 1;
void doPWMled(int whichPin, int topVal, int rampSpeed) {
    if (rampUp) {
      pinVal = pinVal + rampSpeed;
    }else{
      pinVal = pinVal - rampSpeed;
    }
    if (pinVal>=topVal) {
      rampUp = 0;
    }
    if (pinVal <= 0) {
      rampUp = 1;
    }
    analogWrite(whichPin,pinVal);
    Serial.println(pinVal);
}

int ledPWMpin = 11;
byte byteVal = 0;
char myString[] = "No Connection";

void setup()
{
  // begin the serial communication
  Serial.begin(9600);
  pinMode(ledPWMpin, OUTPUT);
}

void loop()
{
  byte byteVal;

  // check if data has been sent from the computer
  if (Serial.available()) {
    // read the most recent byte (which will be from 0 to 255)
    byteVal = Serial.read();
    Serial.println(byteVal,DEC);
    // set the brightness of the LED
    analogWrite(ledPWMpin, byteVal);
  }else{
   Serial.println(myString); 
  }
}

import processing.serial.*; // Import the 'serial' library to add
                            // serial port functionality to processing.
                            // The '*' after serial tells processing to 
                            // import all the sub libraries associated with 
                            // serial.

Serial myPort;              // Serial is now an object type for which we can 
                            // declare a variable, 'myPort,' in which the  
                            // instance of the object is stored.

void setup()
{
  size(256, 256);           // Open a window that 256 x 256 pixels in size.
                            // Note that 256 corresponds to the number of
                            // values that the Arduino analogWrite can handle.

  println("Available serial ports:");
  println(Serial.list());

  // Uses the first port in this list (number 0).  Change this to
  // select the port corresponding to your Arduino board.  The last
  // parameter (e.g. 9600) is the speed of the communication.  It
  // has to correspond to the value passed to Serial.begin() in your
  // Arduino sketch.
  myPort = new Serial(this, Serial.list()[0], 9600);  
}

void draw()
{
  // write the current X-position of the mouse to the serial port as
  // a single byte
  myPort.write(mouseX);
}