int leftspeed = 2;
int leftspeed = 5;
int rightspeed = 4;
int rightspeed = 6; 
void setup(){
 pinMode(leftSpeed, OUTPUT);//
 pinMode(leftSpeed, OUTPUT);
 pinMode(rightSpeed, OUTPUT);
 pinMode(rightSpeed, OUTPUT);
}
void forward(){
  digitalWrite(2, HIGH);
  analogWrite(5,255);
  digitalWrite(4,LOW);
  analogWrite(6,255);
  delay(2000);
}
void loop(){

  while (seraial.available() > 0) {
    BLE_value = BLE_value + ((char)(Serial.read()));
    delay(2);
  }
if (0 < String(BLE_value) .length9() ) {
  Serial.println(BLE_value);
  BLE_value = "";
}

}