Arduino 2.4 inch TFT LCD Resistor Value finder by Color code

//This project is done by Teach Me Something
#include <Adafruit_GFX.h>    // Core graphics library
#include <MCUFRIEND_kbv.h>
#include "TouchScreen.h"
MCUFRIEND_kbv tft;  
/*______End of Libraries_______*/

/*______Define LCD pins (I have asigned the default values)_______*/
#define YP A1  // must be an analog pin, use "An" notation!
#define XM A2  // must be an analog pin, use "An" notation!
#define YM 7   // can be a digital pin
#define XP 6   // can be a digital pin
#define LCD_CS A3
#define LCD_CD A2
#define LCD_WR A1
#define LCD_RD A0
#define LCD_RESET A4
/*_______End of defanitions______*/

/*______Assign names to colors and pressure_______*/
#define BLACK   0x0000
#define BROWN   0x7980
#define RED     0xF800
#define ORANGE  0xFBE0
#define YELLOW  0xFFE0
#define GREEN   0x07E0
#define BLUE    0x001F
#define VIOLET  0xA81F
#define GREY    0x7BEF
#define WHITE   0xFFFF
#define CYAN    0x07FF
#define MAGENTA 0xF81F

#define MINPRESSURE 10
#define MAXPRESSURE 1200
/*_______Assigned______*/

/*____Calibrate TFT LCD_____*/
#define TS_MINX 910  // left
#define TS_MINY 760  // t09
#define TS_MAXX 180  // RT
#define TS_MAXY 135  // Bot
/*______End of Calibration______*/

TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300); //300 is the sensitivity
//Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET); //Start communication with LCD

String symbol[3][4] = {
  { "0", "1", "2", "3" },
  { "4", "5", "6", "7" },
  { "8", "9", "C", "K" }
};
String colors[1][10]=
  { "Black","Brown","Red","Orange","Yellow","Green","Blue","Violet","Grey","White"};
 int X,Y;
 int ring,ring1,ring2,ring3,ring4=0;
 long Number1;
 char C;
 char K;
 long resistance=0;
void setup() {
  Serial.begin(9600); //Use serial monitor for debugging
  tft.reset(); //Always reset at start
  tft.begin(0x9341); // My LCD uses LIL9341 Interface driver IC
  tft.setRotation(2); // I just roated so that the power jack faces up - optional
  tft.invertDisplay(1);
  IntroScreen();
  draw_BoxNButtons(); 
}

void loop() {

TSPoint p = waitTouch();
X = p.y; Y = p.x;
Serial.print(X); Serial.print(','); Serial.println(Y);// + " " + Y);


DetectButtons();

Ring();
//if(ring>3)
//calculation();  
}


TSPoint waitTouch() {
  
  TSPoint p;
  do {
    p = ts.getPoint(); 
    pinMode(XM, OUTPUT);
    pinMode(YP, OUTPUT);
  } while((p.z < MINPRESSURE )|| (p.z > MAXPRESSURE));
  p.x = map(p.x, TS_MINX, TS_MAXX, 0, 320);
  p.y = map(p.y, TS_MINY, TS_MAXY, 0, 240);;
  return p;
}


void DetectButtons()
{

  if ( X>135) //Detecting Buttons on Column 1
  {
    if (Y>0 && Y<60) //If Button 9 is pressed
    {Serial.println ("Button 8"); 
       Number1=8;
    }
    
     if (Y>60 && Y<120) //If Button 5 is pressed
    {Serial.println ("Button 4"); 
    Number1=4;
    }
    
     if (Y>120 && Y<180) //If Button 1 is pressed
    {Serial.println ("Button 0"); 
    
    Number1=0;
    }
    
     
  }

    if (X<135 && X>90) //Detecting Buttons on Column 2
  {
    if (Y>0 && Y<60)
    {Serial.println ("Button 9"); //Button 10 is Pressed
    
    Number1=9;
    }
    
     if (Y>60 && Y<120)
    {Serial.println ("Button 5"); 
    Number1=5;
    }
    
     if (Y>120 && Y<180)
    {Serial.println ("Button 1"); 
    Number1=1;
    }
    
    
  }

    if (X<90 && X>40) //Detecting Buttons on Column 3
  {
    if (Y>0 && Y<60)
    {Serial.println ("Button C"); 
    
   ring=0;
   ring1=0;
   ring2=0;
   ring3=0;
   ring4=0;
  
   // IntroScreen();
  draw_BoxNButtons(); 
   resistance=0;
   Number1=0;
   
//  finalvalue1=0;
  delay(500);
 
  return;
   
    }
    
     if (Y>60 && Y<120)
    {Serial.println ("Button 6"); 
     Number1=6;
    }
    
     if (Y>120 && Y<180)
    {Serial.println ("Button 2");
    Number1=2;
    }
    
  }

      if (X<48) //Detecting Buttons on Column 4
{
    if (Y>0 && Y<60)
    {Serial.println ("Button K"); 

    if(ring>3)
calculation();
else
 draw_BoxNButtons(); 
 
     ring=-1;
     ring1=0;
     ring2=0;
     ring3=0;
     ring4=0;
     delay(700);
     }
    
     if (Y>60 && Y<120)
    {Serial.println ("Button 7"); 
    Number1=7;
    }
    
     if (Y>120 && Y<180)
    {Serial.println ("Button 3");
    Number1=3;
    }
  
    
  }
  if(!(ring>3 || ring==-1))
{
    tft.setCursor(55, 28+(20*ring));
    tft.setTextColor(RED);
    tft.setTextSize(2);
    tft.println(colors[0][Number1]);
    delay(300);
     ring++;
} 
else
ring++;

}





void IntroScreen()
{tft.fillScreen(BLACK);
  tft.setCursor (55, 50);
  tft.setTextSize (3);
  tft.setTextColor(RED);
  tft.println("ARDUINO");
  tft.setTextColor(YELLOW);
  tft.setCursor (60, 140);
   tft.setTextSize (2);
   tft.println("Resistor ");
   tft.setCursor (10, 170);
   tft.println("Color Coding Game");
  tft.setCursor (10, 230);
  tft.setTextColor(BLUE);
  tft.println("Teach Me Something");
  delay(4000);
  
}

void draw_BoxNButtons()
{
  //Draw the Result Box
    tft.fillRect(0, 0, 240, 140,BLUE);
    tft.fillRect(20, 25, 20, 85,WHITE);
    for(int a=0; a<3;a++)
    {tft.drawLine(29+a,25,29+a,15,WHITE);
    tft.drawLine(29+a,80,29+a,120,WHITE);
    
    }
    tft.fillRect(20,35,20,3,BLACK);
    tft.fillRect(20,55,20,3,BLACK);
    
    tft.fillRect(20,75,20,3,BLACK);
    tft.fillRect(20,100,20,3,BLACK);
     
 //Draw First Column
  tft.fillRect  (0,260,60,60,GREY);
  tft.fillRect  (0,200,60,60,YELLOW);
  tft.fillRect  (0,140,60,60,BLACK);

 //Draw Second Column
  tft.fillRect  (60,260,60,60,WHITE);
  tft.fillRect  (60,200,60,60,GREEN);
  tft.fillRect  (60,140,60,60,BROWN);

 //Draw Third Column  
  tft.fillRect  (120,260,60,60,BLACK);
  tft.fillRect  (120,200,60,60,BLUE);
  tft.fillRect  (120,140,60,60,RED);

 //Draw 4th Column  
  tft.fillRect  (180,260,60,60,BLACK);
  tft.fillRect  (180,200,60,60,MAGENTA);
  tft.fillRect  (180,140,60,60,ORANGE);


  //Draw Horizontal Lines
  for (int h=140; h<=320; h+=60)
  tft.drawFastHLine(0, h, 240, WHITE);

  //Draw Vertical Lines
  for (int v=0; v<=240; v+=60)
  tft.drawFastVLine(v, 140, 240, WHITE);

  //Display keypad lables 
  for (int j=0;j<3;j++) {
    for (int i=0;i<4;i++) {
      tft.setCursor(22 + (60*i), 100 + (60*(j+1)));
      tft.setTextSize(3);
      tft.setTextColor(WHITE);
      tft.println(symbol[j][i]);
      
    }
     
    
  }
     
      tft.setTextSize(3);
      tft.setTextColor(BLACK);
      tft.setCursor(22 , 220);
      tft.println("4");
      tft.setCursor(82 , 280);
      tft.println("9");
      tft.setTextColor(RED);
      tft.setCursor(22 , 280);
      tft.println("8");
        tft.fillRect  (181,261,60,60,BLACK);
       
        tft.setTextSize(3);
        tft.setCursor(195 , 280);
      tft.println("OK");
}

void Ring()
{
if(ring==1)
ring1=Number1;
if(ring==2)
ring2=Number1;
if(ring==3)
ring3=Number1;
if(ring==4)
ring4=Number1;
} 


void calculation()
{
 
  long test;
  float finalvalue1;
  int mega=0;
  
  if(ring3==0)
  test=1;
  if(ring3==1)
  test=10;
  if(ring3==2)
  test=100;
  if(ring3==3)
  test=1000;
  if(ring3==4)
  test=10000;
  if(ring3==5)
  {test=1;
  mega=1;};
  if(ring3==6)
  {test=10;
  mega=1;}
  if(ring3==7)
   {test=100;
  mega=1;}
  if(ring3==8)
   {test=1000;
  mega=1;}
  if(ring3==9)
   {test=10000;
  mega=1;}
resistance= (ring1*10+ring2)*test;teac
Serial.println(resistance);
Serial.println(ring1);
Serial.println(ring2);
Serial.println(ring3);


  tft.setTextSize(3);
tft.setTextColor(WHITE);
tft.setCursor(145 , 20);
if(resistance<1000 && mega==0)
{tft.println(resistance);
 tft.setCursor(145 , 50);
tft.print("Ohms"); 
}
else if(resistance>999 && mega==0)
{
  
  finalvalue1=(float)resistance/1000;
  tft.print(finalvalue1);
  tft.setCursor(145 , 60);
  tft.print("K.Ohm");
}    
else 
{
  
  finalvalue1=(float)resistance/10;
  tft.print(finalvalue1);
  tft.setCursor(145 , 60);
  tft.print("M.Ohm");
}    
  ring=0;
}