1. I inserted the new processing code (from the comment above) right before the end curly bracket of the void serialEvent (line 43 in the processing code of the tutorial).

2. Just to check for errors I decided to run processing without updating the Arduino code. It gave me the error: "Syntax Error, maybe missing right parenthesis?" and highlighted this line of code:

if (millis() – previousMillis > interval) {

If I got rid of that line of code (and the corresponding end curly bracket) then I would get the same error message except this line of code would be highlighted:

for( int i=0; i<statuses.size(); i )

I am not that great when it comes to coding, but it seems like the proper parenthesis (open and closing) exist for both lines of code. Any idea about what is going wrong?

Also, on the Arduino side if I want to make an additional LED light up, what exactly am I looking for to come through the serial port? Is the capital letter "A" being sent through the serial port from Processing? or is the work "Arduino" being sent?

If it is a word/letter being sent through serial then I probably just have to set up an "if statement" relating to that text string to trigger an LED to turn on, correct?

Also, just for clarification: This new processing code checks the date to see if there are any new status updates (tweets) from anybody that I am following, if there is a new status update then it sends out "A" through the serial port back to my Arduino? Or does this code check to see if anybody I am following tweeted the word "Arduino"?

I know this is asking for a lot of help and clarification so if you don't have the time that is quite understandable. Thanks.

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//Date today = new Date();
Date latestTweetDate = new Date();

long previousMillis = 0; // will store last time we checked Twitter for updates
long interval = 10000; // interval at which to blink (milliseconds)

void draw() {
background(100);
text("color selected: " inString, 10,50);
//borrowed from Blink w/o Delay Arduino sketch
//Search for updates once every minute
if (millis() – previousMillis > interval) {
println("Call Made");
// save the last time you blinked the LED
previousMillis = millis();
try {
// The factory instance is re-useable and thread safe.
List statuses = twitter.getFriendsTimeline();
for( int i=0; i<statuses.size(); i )
{

Status status = (Status)statuses.get(i);
// Check to see if there is a match
String[] m1 = match(status.getText(), "Arduino");
if (m1 != null) {
// Check to see if tweet is new
Date tweetDate = status.getCreatedAt();
boolean isAfter = tweetDate.after(latestTweetDate);
if(isAfter){
println("Found a NEW match in '" " " status.getText() "'");
myPort.write('A');
latestTweetDate = status.getCreatedAt();
}

}
}
}
catch (TwitterException te) {
println("Couldn't connect: " te);
}
}
}

*I was confused when you explained the additional LED in the video. Does it light up only when you send Tweets (via the actual keyboard), or does it also light up when a tweet is posted from someone you are following?

Thanks.