Golf Grip alignment tool

#include <LiquidCrystal.h>// include the library code

/**********************************************************/
//char array1[]="  "; //the string to print on the LCD
//char array2[]="MONEY MAKER MIKE "; //the string to print on the LCD
int tim = 250; //the value of delay time
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(4, 6, 10, 11, 12, 13);

//Analog read pins
const int xPin = 0;
const int yPin = 1;
const int zPin = 2;

//The minimum and maximum values that came from
//the accelerometer while standing still
//You very well may need to change these
int minVal = 265;
int maxVal = 402;


//to hold the caculated values
double x;
double y;
double z;
double xa;
double xb;

void setup(){
  Serial.begin(300); 
  lcd.begin(16, 2);
}


void loop(){

  //read the analog values from the accelerometer
  int xRead = analogRead(xPin);
  int yRead = analogRead(yPin);
  int zRead = analogRead(zPin);

  //convert read values to degrees -90 to 90 - Needed for atan2
  int xAng = map(xRead, minVal, maxVal, -90, 90);
  int yAng = map(yRead, minVal, maxVal, -90, 90);
  int zAng = map(zRead, minVal, maxVal, -90, 90);

  //Caculate 360deg values like so: atan2(-yAng, -zAng)
  //atan2 outputs the value of -π to π (radians)
  //We are then converting the radians to degrees
  x = RAD_TO_DEG * (atan2(-yAng, -zAng)+PI);
  y = RAD_TO_DEG * (atan2(-xAng, -zAng) + PI);
  z = RAD_TO_DEG * (atan2(-yAng, -xAng) + PI);

  //Output the caculations
  lcd.setCursor(0,0);
  lcd.print("x: "); 
  lcd.print(xa);
 
  xa = -180+abs(x);
  xb = abs(xa);

  if  (xa>178 || xb>178) //setting the tolerance
  
  {
  lcd.setCursor(0,2);
  lcd.print("STOP!");
  delay(600);
  lcd.clear();
  }
  

  /*
  lcd.print(" | y: ");
  lcd.print(y);
  lcd.print(" | z: ");
  lcd.println(z);
  */

  delay(300);//just here to slow down the serial output - Easier to read
}