#include <SoftwareSerial.h>
SoftwareSerial BTSerial(0, 1); // RX | TX
int backFront = 3;
int backBack = 2;
int frontLeft = 5;
int frontRight = 6;

void setup(){
  pinMode(backFront, OUTPUT);
  pinMode(backBack, OUTPUT);
  pinMode(frontLeft, OUTPUT);
  pinMode(frontRight, OUTPUT);
   Serial.begin(9600);
  BTSerial.begin(38400);
}

void loop(){
  char input;


  if (Serial.available()>0){
     input = Serial.read();
    Serial.write(input);

  }

  if (input == 'u' || input == 'U'){
    digitalWrite(backFront, HIGH);
  }
    if (input == 'd' || input == 'D'){
    digitalWrite(backBack, HIGH);
  }
    if (input == 'l' || input == 'L'){
    digitalWrite(frontLeft, HIGH);
  }
    if (input == 'r' || input == 'R'){
    digitalWrite(frontRight, HIGH);
  }
  delay(300);

  digitalWrite(backFront, LOW);
    digitalWrite(backBack, LOW);
      digitalWrite(frontLeft, LOW);
        digitalWrite(frontRight, LOW);
}