DHT11 + python connected to GPIO Android app

http://odroid.com/dokuwiki/doku.php?id=en:odroidoduinoone

DHT11 Sensor (Humidity / Temperature sensor)
http://www.micro4you.com/files/sensor/DHT11.pdf

Connections are (V)oltage, (S)ignal, (G)round

DHT11
 <package>
|  |  |  |
VS  G

For project hooked to digital pin 3 on Arduino Uno

Download dht.cpp and dht.h from below link and copy them into “~/sketchbook/libraries/dht”.
http://playground.arduino.cc/Main/DHTLib

#include <LiquidCrystal.h>
    #include <dht.h>
    /*******************************************************
    This program will test the LCD panel, the buttons
    and the Humidity/Temperature sensor
    Version : 0.1
    Date : 20-Oct-2013
    By Hardkernel
    ********************************************************/
    // for Digital Humidity and Temperature sensor (DHT11)
    dht DHT;
    #define DHT11_PIN 3
    // Global variables
    unsigned long elapsed_time;
    // select the pins used on the LCD panel
    LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
     
    // define some values used by the panel and buttons
    int lcd_key     = 0;
    int adc_key_in  = 0;
    #define btnRIGHT  0
    #define btnUP     1
    #define btnDOWN   2
    #define btnLEFT   3
    #define btnSELECT 4
    #define btnNONE   5
     
    // read the buttons
    int read_LCD_buttons()
    {
     adc_key_in = analogRead(0);      // read the value from the sensor
     // my buttons when read are centered at these valies: 0, 144, 329, 504, 741
     // we add approx 50 to those values and check to see if we are close
     if (adc_key_in > 1000) return btnNONE; // We make this the 1st option for speed reasons since it will be the most likely result
     if (adc_key_in < 50)   return btnRIGHT; 
     if (adc_key_in < 195)  return btnUP;
     if (adc_key_in < 380)  return btnDOWN;
     if (adc_key_in < 555)  return btnLEFT;
     if (adc_key_in < 790)  return btnSELECT;   
     return btnNONE;  // when all others fail, return this...
    }
     
    void setup()
    {
         // initialize serial communication at 115200 bits per second:
         Serial.begin(115200); 
         lcd.begin(16, 2);              // start the LCD library
         lcd.setCursor(0,0);
         lcd.print(" Hello, ODUINO! "); // print a simple message
         //         1234567890123456
         delay(1500); // Splash for 1.5 second
         Serial.println("ODUINO TEST PROGRAM ");
         Serial.println();
         Serial.println("Type,\tstatus,\tHumidity (%),\tTemperature (C)");
         elapsed_time = millis()/1000; // Returns the number of milliseconds since the Arduino board began running the current program.
    }
   
    void loop()
    {
         lcd.setCursor(0,1);            // move to the begining of the second line     
         lcd.print("KEY :");     
         lcd.setCursor(6,1);            // move to the begining of the second line
         lcd_key = read_LCD_buttons();  // read the buttons
         switch (lcd_key)               // depending on which button was pushed, we perform an action
         {
           case btnRIGHT:
             {
             lcd.print("RIGHT ");
             Serial.println("RIGHT ");
             break;
             }
           case btnLEFT:
             {
             lcd.print("LEFT   ");
             Serial.println("LEFT ");     
             break;
             }
           case btnUP:
             {
             lcd.print("UP    ");
             Serial.println("UP ");     
             break;
             }
           case btnDOWN:
             {
             lcd.print("DOWN  ");
             Serial.println("DOWN ");     
             break;
             }
           case btnSELECT:
             {
             lcd.print("SELECT");
             Serial.println("SELECT ");     
             break;
             }
             case btnNONE:
             {
             lcd.print("NONE  ");
             break;
             }
         }
         // Read & Display the humidity / temperature data every 1 second (approx.)
         if(elapsed_time != millis()/1000)
         {
                elapsed_time = millis()/1000;
                Serial.print("DHT11, \t");
                int chk = DHT.read11(DHT11_PIN);
                switch (chk)
                {
                  case DHTLIB_OK: 
                              Serial.print("OK,\t");
                              break;
                  case DHTLIB_ERROR_CHECKSUM:
                              Serial.print("Checksum error,\t");
                              break;
                  case DHTLIB_ERROR_TIMEOUT:
                              Serial.print("Time out error,\t");
                              break;
                  default:
                              Serial.print("Unknown error,\t");
                              break;
                }
                // DISPLAY DATA
                Serial.print(DHT.humidity,0);
                Serial.print(",\t");
                Serial.println(DHT.temperature,0);
               
                lcd.setCursor(0,0);            // move cursor to second line "1" and 9 spaces over
                lcd.print("HUMI:");
                lcd.print((int)(DHT.humidity));
                lcd.print("%");
                lcd.print(" TEM:");
                lcd.print((int)(DHT.temperature));
                lcd.print("C");
         }
         delay(50); // delay 50 msec.
    }