CAR ARDUINO APP INVENTOR BT

 int A1A = 3;//define pin 3 for A1A
 int A1B = 5;//define pin 5 for A1B

 int B1A = 4;//define pin 4 for B1A
 int B1B = 6;//define pin 6 for B1B

 int PW = 120; //power motor

#include <SoftwareSerial.h>// import the serial library

SoftwareSerial Genotronex(10,11); // D10 -> TX, D11 -> RX

int BluetoothData;

void setup() {

       Genotronex.begin(9600);
       Serial.begin(9600);

  pinMode(B1A,OUTPUT);// define pin as output
  pinMode(B1B,OUTPUT);

  pinMode(A1A,OUTPUT);
  pinMode(A1B,OUTPUT);
  motorA('O');
  delay(500);
}

void loop() {


   if (Genotronex.available()){
  BluetoothData=Genotronex.read();
   Serial.println(BluetoothData);}

    if ( BluetoothData == 50)   motorB('L');// Turn motor B to LEFT;
    if ( BluetoothData == 51)   motorB('R');// Turn motor B to RIGHT;
    if ( BluetoothData == 49)   motorB('O');// Turn motor B to OFF;
    if ( BluetoothData == 52)   motorA('O');// Turn motor A to OFF;
    if ( BluetoothData == 53)   motorA('S');// Turn motor A to SLOW;
    if ( BluetoothData == 54)   motorA('R');// Turn motor A to FAST;
    if ( BluetoothData == 55)  {if (A1A == 3) {A1A = 5; A1B = 3;} else {A1A = 3; A1B = 5;}} // Reverse motor A;
delay(5);
}


void motorA(char d)
{
  if(d =='R'){ PW = 180;
    digitalWrite(A1A,LOW);
    analogWrite(A1B,PW);
  }else if (d =='S') { PW = 120;
    digitalWrite(A1A,LOW);
    analogWrite(A1B,PW);
  }else{
    analogWrite(A1A,0);
    analogWrite(A1B,0);
  }
}// motorA end


void motorB(char d)
{
    if(d =='R'){
      digitalWrite(B1A,LOW);
      digitalWrite(B1B,HIGH);
      analogWrite(A1B,PW+10); //more power
    }else if(d =='L'){
      digitalWrite(B1A,HIGH);
      digitalWrite(B1B,LOW);
      analogWrite(A1B,PW+10); //more power
    }else{
    // Turn motor OFF
      digitalWrite(B1A,LOW);
      digitalWrite(B1B,LOW);
    }

}// motorB end