This is the first part of the project and is an arduino that can auto tweet one of 5 predatemined phrases to is own twitter account depending on what buttons are pressed. It uses a button pad stolen out of a guitar hero controller, an ethernet shield ( in my case a combined etherten from freetronics) and the twitter header file to tweet all by i…

gistfile1.txt

/*
 This code is in the public domain.
 
 */

#include <SPI.h>

#include <Ethernet.h>
//#include <EthernetDNS.h> // only for IDE 0022 or earlier
#include <Twitter.h>
#if defined(ARDUINO) && ARDUINO > 18
#endif

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = { 
  0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x01 };
IPAddress ip(130,195,44,97);

// initialize the library instance:
EthernetClient client;

const unsigned long requestInterval = 60000;  // delay between requests

char serverName[] = "api.twitter.com";  // twitter URL

boolean requested;                   // whether you've made a request since connecting
unsigned long lastAttemptTime = 0;            // last time you connected to the server, in milliseconds

String currentLine = "";            // string to hold the text from server
String tweet = "";                  // string to hold the tweet
boolean readingTweet = false;       // if you're currently reading the tweet

Twitter twitter("1284887635-xIQyoZlg9fMq9LnFMnK9sjkPaCmmfjex6VbJ8UB");
char msg1[] = "Someone pushed button 1 and I, the arduino, sent this tweet!#arduino #autotweet";
char msg2[] = "Someone pushed button 2 and I, the arduino, sent this tweet!#arduino #autotweet";
char msg3[] = "Someone pushed button 3 and I, the arduino, sent this tweet!#arduino #autotweet";
char msg4[] = "Someone pushed button 4 and I, the arduino, sent this tweet!#arduino #autotweet";
char msg5[] = "Someone pushed button 5 and I, the arduino, sent this tweet!#arduino #autotweet";

const int buttonPin1 = 6;     // the number of the pushbutton pin
const int ledPin1 =  1;  
const int buttonPin2 = 3;     // the number of the pushbutton pin
const int ledPin2 =  8;      // the number of the LED pin
const int buttonPin3 = 2;     // the number of the pushbutton pin
const int ledPin3 =  9; 
const int buttonPin4 = 5;     // the number of the pushbutton pin
const int buttonPin5 = 7;   // the number of the pushbutton pin
     // the number of the pushbutton pin  
// variables will change:
int buttonState1 = 0;         // variable for reading the pushbutton status
int buttonState2 = 0;  
int buttonState3 = 0;  
int buttonState4 = 0; 
int buttonState5 = 0; 


void setup() {
  
 // reserve space for the strings:
  currentLine.reserve(256);
  tweet.reserve(150);

 // Open serial communications and wait for port to open:
  Serial.begin(9600);
   
  // attempt a DHCP connection:
  Serial.println("Attempting to get an IP address using DHCP:");
  Ethernet.begin(mac);
   
  Serial.print("My address:");
  Serial.println(Ethernet.localIP());
  // connect to Twitter:
  connectToServer();
  pinMode(ledPin1, OUTPUT);      
  pinMode(buttonPin1, INPUT); 
  pinMode(ledPin2, OUTPUT);      
  pinMode(buttonPin2, INPUT); 
  pinMode(ledPin3, OUTPUT);      
  pinMode(buttonPin3, INPUT); 
  pinMode(buttonPin4, INPUT); 
  pinMode(buttonPin5, INPUT);
  
}



void loop()
{
  
   buttonState1 = digitalRead(buttonPin1);
  buttonState2 = digitalRead(buttonPin2);
  buttonState3 = digitalRead(buttonPin3);
  buttonState4 = digitalRead(buttonPin4);
  buttonState5 = digitalRead(buttonPin5);
  
   if (buttonState1 == HIGH) {     
    // turn LED on:    
    digitalWrite(ledPin1, HIGH);  
    Serial.println("btn1");
    if (twitter.post(msg1)) {
    int status = twitter.wait(&Serial);
    if (status == 200) {
      Serial.println("OK.");
    } else {
      Serial.print("failed : code ");
      Serial.println(status);
    }
  } else {
    Serial.println("failed.");
  }
    delay(60000);
  } 
  else {
    // turn LED off:
    digitalWrite(ledPin1, LOW); 
  }
  
  if (buttonState2 == HIGH) {     
    // turn LED on:    
    digitalWrite(ledPin2, HIGH);  
    Serial.println("btn2");
    if (twitter.post(msg2)) {
    int status = twitter.wait(&Serial);
    if (status == 200) {
      Serial.println("OK.");
    } else {
      Serial.print("failed : code ");
      Serial.println(status);
    }
  } else {
    Serial.println("failed.");
  }
    delay(60000);
  } 
  else {
    // turn LED off:
    digitalWrite(ledPin2, LOW); 
  }
  if (buttonState3 == HIGH) {     
    // turn LED on:    
    digitalWrite(ledPin3, HIGH);  
    Serial.println("btn3");
    if (twitter.post(msg3)) {
    int status = twitter.wait(&Serial);
    if (status == 200) {
      Serial.println("OK.");
    } else {
      Serial.print("failed : code ");
      Serial.println(status);
    }
  } else {
    Serial.println("failed.");
  }
    delay(60000);
  } 
  else {
    // turn LED off:
    digitalWrite(ledPin3, LOW); 
  }
  if (buttonState4 == HIGH) {     
    // turn LED on:    
    digitalWrite(ledPin1, HIGH); 
    digitalWrite(ledPin2, HIGH); 
    Serial.println("btn4");
    if (twitter.post(msg4)) {
    int status = twitter.wait(&Serial);
    if (status == 200) {
      Serial.println("OK.");
    } else {
      Serial.print("failed : code ");
      Serial.println(status);
    }
  } else {
    Serial.println("failed.");
  }
    delay(60000);
  } 
  else {
    // turn LED off:
    digitalWrite(ledPin1, LOW); 
     digitalWrite(ledPin2, LOW);
  }
  if (buttonState5 == HIGH) {     
    // turn LED on:    
    digitalWrite(ledPin3, HIGH); 
    digitalWrite(ledPin2, HIGH); 
    digitalWrite(ledPin1, HIGH);
    Serial.println("btn5");
    if (twitter.post(msg5)) {
    int status = twitter.wait(&Serial);
    if (status == 200) {
      Serial.println("OK.");
    } else {
      Serial.print("failed : code ");
      Serial.println(status);
    }
  } else {
    Serial.println("failed.");
  }
    delay(60000);
  } 
  else {
    // turn LED off:
    digitalWrite(ledPin3, LOW); 
     digitalWrite(ledPin2, LOW);
     digitalWrite(ledPin1, LOW);
  }
  
  if (client.connected()) {
    if (client.available()) {
      // read incoming bytes:
      char inChar = client.read();

      // add incoming byte to end of line:
      currentLine += inChar; 

      // if you get a newline, clear the line:
      if (inChar == '\n') {
        currentLine = "";
      } 
      // if the current line ends with <text>, it will
      // be followed by the tweet:
      if ( currentLine.endsWith("<text>")) {
        // tweet is beginning. Clear the tweet string:
        readingTweet = true; 
        tweet = "";
      }
      // if you're currently reading the bytes of a tweet,
      // add them to the tweet String:
      if (readingTweet) {
        if (inChar != '<') {
          tweet += inChar;
        } 
        else {
          // if you got a "<" character,
          // you've reached the end of the tweet:
          readingTweet = false;
          Serial.println(tweet);   
          // close the connection to the server:
          client.stop(); 
        }
      }
    }   
  }
  else if (millis() - lastAttemptTime > requestInterval) {
    // if you're not connected, and two minutes have passed since
    // your last connection, then attempt to connect again:
    connectToServer();
  }
  
}

void connectToServer() {
  // attempt to connect, and wait a millisecond:
  Serial.println("connecting to server...");
  if (client.connect(serverName, 80)) {
    Serial.println("making HTTP request...");
    // make HTTP GET request to twitter:
    client.println("GET /1/statuses/user_timeline.xml?screen_name=tvuino&count=1 HTTP/1.1");
    client.println("HOST: api.twitter.com");
    client.println();
  }
  // note the time of this connect attempt:
  lastAttemptTime = millis();
}