int motorHiz = 3;
int motorYon = 12;

void Set_Motor (float Lval){
  Lval = Lval*2.5;
  if (Lval >=0) { 
      analogWrite(motorHiz, Lval);  
      digitalWrite(motorYon, LOW);       
  } else {
      Lval=abs(Lval); 
      digitalWrite(motorYon, HIGH);  
      analogWrite(motorHiz, Lval); 
  }
   
   Serial.println(Lval);
}


void setup () {
  pinMode(motorHiz, OUTPUT); 
  pinMode(motorYon, OUTPUT); 
  Serial.begin(115200);
}

void loop () {
 Set_Motor (0);
  /*
  Set_Motor (200);
  delay(2000); 
  Set_Motor (500);
  delay(2000); 
  Set_Motor (0);
  delay(2000);
  Set_Motor (-200);
  delay(2000);
  Set_Motor (-500);
  delay(2000);
  */
  
}