Twitter Mood Light - The World's Mood in a Box

Step 6 Download the code

The attached WorldMood.zip contains 4 subdirectories (or "libraries") and the Arduino sketch WorldMood.pde

The four libraries need to be copied into the Arduino library directory and then they can be imported as shown.

WorldMood/WorldMood.pde (see below) should be opened in the Arduino development environment.

You then need to correct the "[your network]" and "[your network password]" fields. eg.

#define network ("mynetwork")
#define password ("mypassword")

Then the sketch (and libraries) should be compiled and uploaded to the Arduino board.

see arduino.cc/en/Hacking/LibraryTutorial

The next 5 programming steps just give an overview of each of the components and include the most noteworthy parts of the source code...

**** Update ****

If you have a newer board then you may need to change this

struct SPI_UART_cfg SPI_Uart_config = {0x50,0x00,0x03,0x10};

to this:
struct SPI_UART_cfg SPI_Uart_config = {0x60,0x00,0x03,0x10};


See here for more info:
http://forum.sparkfun.com/viewtopic.php?f=13&t=21846&sid=24282242d4256db0c7b7e814d7ca6952&start=15

http://www.sparkfun.com/commerce/product_info.php?products_id=9367

***** End Update ****

 

 

// LED setup - only some pins provide 8-bit PWM (Pulse-width modulation)

// output with the analogWrite() function.

// http://www.arduino.cc/en/Main/ArduinoBoardDuemilanove

// PWM: 3,5,6,9,10,11

#define redPin    (3)

#define greenPin (5)

#define bluePin   (6)

 

// delay in ms between fade updates

// max fade time = 255 * 15 = 3.825s

#define fadeDelay (15)

 

// Wifi setup

#define network ([your network])

#define password ([your network password])

#define remoteServer ("twitter.com")

 

const char* moodNames[NUM_MOOD_TYPES] = {

 "love",

 "joy",

 "surprise",

 "anger",

 "envy",

 "sadness",

 "fear",

};

 

const char* moodIntensityNames[NUM_MOOD_INTENSITY] = {

 "mild",

 "considerable",

 "extreme",

};

 

// the long term ratios between tweets with emotional content

// as discovered by using the below search terms over a period of time.

float tempramentRatios[NUM_MOOD_TYPES] = {

 0.13f,

 0.15f,

 0.20f,

 0.14f,

 0.16f,

 0.12f,

 0.10f,

};

 

// these numbers can be tweaked to get the system to be more or less reactive

// to be more or less susceptible to noise or short term emotional blips, like sport results

// or bigger events, like world disasters

#define emotionSmoothingFactor (0.1f)

#define moodSmoothingFactor (0.05f)

#define moderateMoodThreshold (2.0f)

#define extremeMoodThreshold (4.0f)

 

// save battery, put the wifly to sleep for this long between searches (in ms)

#define SLEEP_TIME_BETWEEN_SEARCHES (1000 * 5)

 

// Store search strings in flash (program) memory instead of SRAM.

// http://www.arduino.cc/en/Reference/PROGMEM

// edit TWEETS_PER_PAGE if changing the rpp value

prog_char string_0[] PROGMEM = "GET /search.json?q=\"i+love+you\"+OR+\"i+love+her\"+OR+\"i+love+him\"+OR+\"all+my+love\"+OR+\"i'm+in+love\"+OR+\"i+really+love\"&rpp=30&result_type=recent";

prog_char string_1[] PROGMEM = "GET /search.json?q=\"happiest\"+OR+\"so+happy\"+OR+\"so+excited\"+OR+\"i'm+happy\"+OR+\"woot\"+OR+\"w00t\"&rpp=30&result_type=recent";

prog_char string_2[] PROGMEM = "GET /search.json?q=\"wow\"+OR+\"O_o\"+OR+\"can't+believe\"+OR+\"wtf\"+OR+\"unbelievable\"&rpp=30&result_type=recent";

prog_char string_3[] PROGMEM = "GET /search.json?q=\"i+hate\"+OR+\"really+angry\"+OR+\"i+am+mad\"+OR+\"really+hate\"+OR+\"so+angry\"&rpp=30&result_type=recent";

prog_char string_4[] PROGMEM = "GET /search.json?q=\"i+wish+i\"+OR+\"i'm+envious\"+OR+ \"i'm+jealous\"+OR+\"i+want+to+be\"+OR+\"why+can't+i\"+&rpp=30&result_type=recent";

prog_char string_5[] PROGMEM = "GET /search.json?q=\"i'm+so+sad\"+OR+\"i'm+heartbroken\"+OR+\"i'm+so+upset\"+OR+\"i'm+depressed\"+OR+\"i+can't+stop+crying\"&rpp=30&result_type=recent";

prog_char string_6[] PROGMEM = "GET /search.json?q=\"i'm+so+scared\"+OR+\"i'm+really+scared\"+OR+\"i'm+terrified\"+OR+\"i'm+really+afraid\"+OR+\"so+scared+i\"&rpp=30&result_type=recent";

 

// be sure to change this if you edit the rpp value above

#define TWEETS_PER_PAGE (30)

 

PROGMEM const char *searchStrings[] =        

{  

 string_0,

 string_1,

 string_2,

 string_3,

 string_4,

 string_5,

 string_6,

};

 

void setup()

{

 Serial.begin(9600);

 delay(100);

}

 

void loop()

{

 // create and initialise the subsystems 

 WiFly wifly(network, password, SLEEP_TIME_BETWEEN_SEARCHES, Serial);

 WorldMood worldMood(Serial, emotionSmoothingFactor, moodSmoothingFactor, moderateMoodThreshold, extremeMoodThreshold, tempramentRatios);

 LED led(Serial, redPin, greenPin, bluePin, fadeDelay);

 TwitterParser twitterSearchParser(Serial, TWEETS_PER_PAGE);

 

 wifly.Reset();

 

 char searchString[160];

 

 while (true)

 {

    for (int i = 0; i < NUM_MOOD_TYPES; i++)

    {

      twitterSearchParser.Reset();

 

      // read in new search string to SRAM from flash memory

      strcpy_P(searchString, (char*)pgm_read_word(&(searchStrings[i])));

 

      bool ok = false;

      int retries = 0;

 

      // some recovery code if the web request fails

      while (!ok)

      {

        ok = wifly.HttpWebRequest(remoteServer, searchString, &twitterSearchParser);

 

        if (!ok)

        {

          Serial.println("HttpWebRequest failed");

 

          retries++;

          if (retries > 3)

          {

            wifly.Reset();

            retries = 0;

          }

        }

      }

 

      float tweetsPerMinute = twitterSearchParser.GetTweetsPerMinute();

 

      // debug code

      Serial.println("");

      Serial.print(moodNames[i]);

      Serial.print(": tweets per min = ");

      Serial.println(tweetsPerMinute);

 

      worldMood.RegisterTweets(i, tweetsPerMinute);

    }

 

    MOOD_TYPE newMood = worldMood.ComputeCurrentMood();

    MOOD_INTENSITY newMoodIntensity = worldMood.ComputeCurrentMoodIntensity();

 

    Serial.print("The Mood of the World is ... ");

    Serial.print(moodIntensityNames[(int)newMoodIntensity]);

    Serial.print(" ");

    Serial.println(moodNames[(int)newMood]);

 

    led.SetColor((int)newMood, (int)newMoodIntensity);

 

    // save the battery

    wifly.Sleep();

 

    // wait until it is time for the next update

    delay(SLEEP_TIME_BETWEEN_SEARCHES);

 

    Serial.println("");

 }

}

 

Comments

[benreed]

hey awsome project :) but i keep getting error messages on the code? i have never built a project with code before so i have no idea what im doing , i have a fairly good knowladge of computers however , you think you can help?