   servo.write(currentServoAngle);
 }
 
-void handleSerial(char val) {
+void handleSerial(char command) {
   int leftspeed = 255;   // 255 is maximum speed
   int rightspeed = 240;  // Adjust for skew 
-  switch(val) // Perform an action depending on the command
+  switch(command) // Perform an action depending on the command
   {
     case 'w'://Move Forward
     case 'W':

#include <Servo.h>

int E1 = 6; //M1 Speed Control
int E2 = 5; //M2 Speed Control
int M1 = 8; //M1 Direction Control
int M2 = 7; //M2 Direction Control

#define MIN_ANGLE 100
#define MAX_ANGLE 180
#define SERVO_PIN 13

  }
}

void stop(void)
{
  digitalWrite(E1,LOW);
  digitalWrite(E2,LOW);
