Arduino can hear and understand your voice with 1Sheeld !

// LCD Shield declarations //////////////////////////////

#include <LiquidCrystal.h>

// 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

//////////////////////////////////////////////////////////

// 1Sheeld Declarations///////////////////////////////////

#define CUSTOM_SETTINGS
#define INCLUDE_VOICE_RECOGNIZER_SHIELD

//A Boolean flag to know if recognition have been started already
bool started = false;

/* Include 1Sheeld library. */
#include <OneSheeld.h>

//////////////////////////////////////////////////////////

void setup(){
   lcd.begin(16, 2);               // start the library
   lcd.setCursor(0,0);             // set the LCD cursor   position 
   lcd.print("Push select");  // print a simple message on the LCD
   /* Start Communication. */
   OneSheeld.begin();
   /* Error Commands handiling. */
   VoiceRecognition.setOnError(error);
   //This is a trigger for the newCommand void , 
   //It's called each time a new command is recognized by the phone
   VoiceRecognition.setOnNewCommand(newCommand);   
}
 
void loop(){            
   lcd_key = read_LCD_buttons();   // read the buttons

   switch (lcd_key){               // depending on which button was pushed, we perform an action

       case btnRIGHT:{             //  push button "RIGHT" to scroll the text
            lcd.scrollDisplayLeft();
            delay(300);
            break;
       }
       case btnLEFT:{
             lcd.scrollDisplayRight();//  push button "LEFT" to scroll the text
             delay(300);
             break;
       }    
       case btnUP:{
             break;
       }
       case btnDOWN:{
             break;
       }
       case btnSELECT:{
             if (!started){
             lcd.clear();
             lcd.setCursor(0,0);
             lcd.print("Listening...");  //  push button "SELECT" to trig recognition
             VoiceRecognition.start();
             started = true;}
             break;
       }
       case btnNONE:{
             //  No action on the KeyPad
             started = false;
             break;
       }
   }
   
}

void error(byte errorData)
{
  /* Switch on error and print it on the LCD. */
  switch(errorData)
  {
    case NETWORK_TIMEOUT_ERROR: lcd.setCursor(0,1);lcd.print("Network timeout");break;
    case NETWORK_ERROR: lcd.setCursor(0,1);lcd.print("Network Error");break;
    case AUDIO_ERROR: lcd.setCursor(0,1);lcd.print("Audio error");break;
    case SERVER_ERROR: lcd.setCursor(0,1);lcd.print("No Server");break;
    case SPEECH_TIMEOUT_ERROR: lcd.setCursor(0,1);lcd.print("Speech timeout");break;
    case NO_MATCH_ERROR: lcd.setCursor(0,1);lcd.print("No match");break;
    case RECOGNIZER_BUSY_ERROR: lcd.setCursor(0,1);lcd.print("Busy");break;
  }
}

int read_LCD_buttons(){// read the buttons
    
    // read the value from the keypad since only one analog pin is used
    adc_key_in = analogRead(0);       
     

    if (adc_key_in > 1000) return btnNONE; 

    //For V1.1 of the LCD/Keypad Shield enable this threshold
    /*
    if (adc_key_in < 50)   return btnRIGHT;  
    if (adc_key_in < 250)  return btnUP; 
    if (adc_key_in < 450)  return btnDOWN; 
    if (adc_key_in < 650)  return btnLEFT; 
    if (adc_key_in < 850)  return btnSELECT;  
    */
   // For V1.0 comment the other threshold and use the one below:
   
     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 newCommand(String command){
    //Clear the text on the LCD Screen
    lcd.clear();
    lcd.setCursor(0,0);// set the LCD cursor   position 
    lcd.print("You said");
    lcd.setCursor(0,1);
    //print last command received
    lcd.print(VoiceRecognition.getLastCommand());
}