voice control android

Arduino and Android Voice control Robot ( How to make a voice control robot)

#include <SoftwareSerial.h>

SoftwareSerial BT(10, 11); //TX, RX respetivelyString readvoice;
void setup() { BT.begin(9600); Serial.begin(9600);  pinMode(3, OUTPUT);  pinMode(4, OUTPUT);  pinMode(5, OUTPUT);  pinMode(6, OUTPUT);
}//-----------------------------------------------------------------------// void loop() {  while (BT.available()){  //Check if there is an available byte to read  delay(10); //Delay added to make thing stable  char c = BT.read(); //Conduct a serial read  readvoice += c; //build the string- "forward", "reverse", "left" and "right"  }   if (readvoice.length() > 0) {    Serial.println(readvoice);
  if(readvoice == "forward")  {    digitalWrite(3, HIGH);    digitalWrite (4, HIGH);    digitalWrite(5,LOW);    digitalWrite(6,LOW);    delay(100);  }
  else if(readvoice == "reverse")  {    digitalWrite(3, LOW);    digitalWrite(4, LOW);    digitalWrite(5, HIGH);    digitalWrite(6,HIGH);    delay(100);  }
  else if (readvoice == "right")  {    digitalWrite (3,HIGH);    digitalWrite (4,LOW);    digitalWrite (5,LOW);    digitalWrite (6,LOW);    delay (100);    }
 else if ( readvoice == "left") {   digitalWrite (3, LOW);   digitalWrite (4, HIGH);   digitalWrite (5, LOW);   digitalWrite (6, LOW);   delay (100); }
 else if (readvoice == "stop") {   digitalWrite (3, LOW);   digitalWrite (4, LOW);   digitalWrite (5, LOW);   digitalWrite (6, LOW);   delay (100); }readvoice="";}} //Reset the variable