 int xDir;
 int yDir;
 int buttonVal;
+
+
+int zeroLine = 50;
 
 void setup(void)
 {

  }


    


    if(xDir > 50)
    {
      analogWrite(l1_motor, xDir);
      analogWrite(l2_motor, 0);
      
      analogWrite(r1_motor, xDir);
      analogWrite(r2_motor, 0);
    }
    else if(xDir < -50)
    {
      analogWrite(l2_motor, abs(xDir));
      analogWrite(l1_motor, abs(0));
      
      analogWrite(r2_motor, abs(xDir));
      analogWrite(r1_motor, abs(0));
    }

    else 
    {
      analogWrite(l2_motor, 0);
      analogWrite(l1_motor, abs(0));
      
      analogWrite(r1_motor, 0);
      analogWrite(r2_motor, abs(0));      
    }

//    //Serial.println(theMessage);
//    Serial.print(buttonVal); Serial.print('\t');

//    Serial.println(yDir);









    

    theMessage = "";

    
