int Right = 2;
int Left = 3; // define two digital pins 
char PinState;
void setup() {
  // put your setup code here, to run once:
pinMode(Right,OUTPUT);
pinMode(Left,OUTPUT);
Serial.begin(9600); 

}

void loop() {
  // put your main code here, to run repeatedly:
  if(Serial.available() > 0) //if some date is avaliabe in serial port
   PinState = Serial.read(); //read the vaule
  
  if(PinState == '1'){ //if statement will be 1
    digitalWrite(Right,HIGH);
    digitalWrite(Left,LOW);
    
  }
if(PinState == '0'){ //if statement will be  0
digitalWrite(Right,LOW);
digitalWrite(Left,HIGH);

}
if(PinState == '2'){ //if statement will be 2
digitalWrite(Right,LOW);
digitalWrite(Left,LOW);
}
}