Twitter2 LCD (IO)

/*
 * Twitter2LCD
 * gets xml data from http://twitter.com/statuses/user_timeline/16297873.rss
 * reads the most recent tweet from field:  <title>
 * writes the output to the LCD.

 The circuit:
 * LCD RS pin to digital pin 12
 * LCD Enable pin to digital pin 11
 * LCD D4 pin to digital pin 5
 * LCD D5 pin to digital pin 4
 * LCD D6 pin to digital pin 3
 * LCD D7 pin to digital pin 2
 * 10K resistor:
 * ends to +5V and ground
 * wiper to LCD VO pin (pin 3)

 See more here:
 http://www.arduino.cc/en/Tutorial/LiquidCrystal
 */


#include <Ethernet.h>
#include <EthernetDHCP.h>
#include <TextFinder.h>
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(9, 8, 5, 4, 3, 2);

byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte server[] = {128,242,240,20}; // Twitter

char tweet[140];

Client client(server, 80);

TextFinder  finder( client );

void setup()
{
  lcd.begin(20,4);
  lcd.clear();
  lcd.print("Twitter2LCD");
  Serial.begin(9600);
  EthernetDHCP.begin(mac);
}


void loop()
{
  lcd.clear();
  if (client.connect()) {
    client.println("GET http://www.twitter.com/statuses/user_timeline/16297873.rss HTTP/1.0");  // twitter rss for fgranelli
    client.println();
  }
  else {
    lcd.println("Connection failed");
    Serial.println("Connection failed");
  }
  if (client.connected()) {
     // get the last tweet by simply parsing the item and title tags
     if((finder.find("<item>")&&(finder.getString("<title>","</title>",tweet,140)!=0)))
     {
         Serial.println(tweet);

         for (int j=0; j<2; j++) {
           // first part of the tweet
           lcd.clear();
           lcd.setCursor(0,0);
           for (int i=0; i<20; i++)
             lcd.print(tweet[i]);
           lcd.setCursor(0,1);
           for (int i=20; i<40; i++)
             lcd.print(tweet[i]);
           lcd.setCursor(0,2);
           for (int i=40; i<60; i++)
             lcd.print(tweet[i]);
           lcd.setCursor(0,3);
           for (int i=60; i<80; i++)
             lcd.print(tweet[i]);
           delay(10000);
           // second part of the tweet
           lcd.clear();
           lcd.setCursor(0,0);
           for (int i=60; i<80; i++)
             lcd.print(tweet[i]);
           lcd.setCursor(0,1);
           for (int i=80; i<100; i++)
             lcd.print(tweet[i]);
           lcd.setCursor(0,2);
           for (int i=100; i<120; i++)
             lcd.print(tweet[i]);
           lcd.setCursor(0,3);
           for (int i=120; i<140; i++)
             lcd.print(tweet[i]);
           delay(10000);
           }
     }
    else
      lcd.println("Could not find item field");
  }
  else {
    lcd.println("Disconnected");
  }
  client.stop();
  client.flush();
  delay(60000); // wait a minute before next update
}