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Arduino based voice control car code

circuit diagram of arduino based car project

 #include <SoftwareSerial.h>


SoftwareSerial BT(0, 1); //TX, RX respetively

String readvoice;


void setup() {

 BT.begin(9600);

 Serial.begin(9600);

  pinMode(4, OUTPUT);

  pinMode(3, 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 == "*back#")

  {

    digitalWrite(3, LOW);

    digitalWrite(4, LOW);

    digitalWrite(5, HIGH);

    digitalWrite(6,HIGH);

    delay(100);

  }


  else if (readvoice == "*left#")

  {

    digitalWrite (3,HIGH);

    digitalWrite (4,LOW);

    digitalWrite (5,LOW);

    digitalWrite (6,LOW);

   delay (800);

      digitalWrite(3, HIGH);

    digitalWrite (4, HIGH);

    digitalWrite(5,LOW);

    digitalWrite(6,LOW);

    delay(100);

  

  }


 else if ( readvoice == "*right#")

 {

   digitalWrite (3, LOW);

   digitalWrite (4, HIGH);

   digitalWrite (5, LOW);

   digitalWrite (6, LOW);

   delay (800);

      digitalWrite(3, HIGH);

    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


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