Trouble with an Elegoo R3 2.8" Touch Screen

I am very new to the whole Arduino thing… In fact the last time wrote any programming was around 40 years ago.

I have started with some kits so I can play with sensors and manipulate some information.

I have made some not bad progress, although I have one I am really struggling with.

I have bought an Mega2560 and also an elegoo 2.8" display.

they are connected together properly, and upto now have worked with no problem.

the next lessons are to use the touch screen options. Here I have an issue. Alothough I have tried different sketches, the results are always the same…

I cannot compile it without an error. Could someone be kind enough to look at the code (As came from the instructional CD) and my error messages and give me some pointers please…

/// Paint example specifically for the TFTLCD breakout board.
// If using the Arduino shield, use the tftpaint_shield.pde sketch instead!
// DOES NOT CURRENTLY WORK ON ARDUINO LEONARDO
//Technical support:goodtft@163.com

#include <Elegoo_GFX.h>    // Core graphics library
#include <Elegoo_TFTLCD.h> // Hardware-specific library
#include <TouchScreen.h>

#if defined(__SAM3X8E__)
    #undef __FlashStringHelper::F(string_literal)
    #define F(string_literal) string_literal
#endif

// When using the BREAKOUT BOARD only, use these 8 data lines to the LCD:
// For the Arduino Uno, Duemilanove, Diecimila, etc.:
//   D0 connects to digital pin 8  (Notice these are
//   D1 connects to digital pin 9   NOT in order!)
//   D2 connects to digital pin 2
//   D3 connects to digital pin 3
//   D4 connects to digital pin 4
//   D5 connects to digital pin 5
//   D6 connects to digital pin 6
//   D7 connects to digital pin 7

// For the Arduino Mega, use digital pins 22 through 29
// (on the 2-row header at the end of the board).
//   D0 connects to digital pin 22
//   D1 connects to digital pin 23
//   D2 connects to digital pin 24
//   D3 connects to digital pin 25
//   D4 connects to digital pin 26
//   D5 connects to digital pin 27
//   D6 connects to digital pin 28
//   D7 connects to digital pin 29

// For the Arduino Due, use digital pins 33 through 40
// (on the 2-row header at the end of the board).
//   D0 connects to digital pin 33
//   D1 connects to digital pin 34
//   D2 connects to digital pin 35
//   D3 connects to digital pin 36
//   D4 connects to digital pin 37
//   D5 connects to digital pin 38
//   D6 connects to digital pin 39
//   D7 connects to digital pin 40
/*
#define YP 9  // must be an analog pin, use "An" notation!
#define XM 8  // must be an analog pin, use "An" notation!
#define YM A2   // can be a digital pin
#define XP A3   // can be a digital pin
*/

#define YP A3  // must be an analog pin, use "An" notation!
#define XM A2  // must be an analog pin, use "An" notation!
#define YM 9   // can be a digital pin
#define XP 8   // can be a digital pin
/*
#define TS_MINX 50
#define TS_MAXX 920

#define TS_MINY 100
#define TS_MAXY 940
*/
//Touch For New ILI9341 TP
#define TS_MINX 120
#define TS_MAXX 900

#define TS_MINY 70
#define TS_MAXY 920

// For better pressure precision, we need to know the resistance
// between X+ and X- Use any multimeter to read it
// For the one we're using, its 300 ohms across the X plate
TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);

#define LCD_CS A3
#define LCD_CD A2
#define LCD_WR A1
#define LCD_RD A0
// optional
#define LCD_RESET A4

// Assign human-readable names to some common 16-bit color values:
#define BLACK   0x0000
#define BLUE    0x001F
#define RED     0xF800
#define GREEN   0x07E0
#define CYAN    0x07FF
#define MAGENTA 0xF81F
#define YELLOW  0xFFE0
#define WHITE   0xFFFF


Elegoo_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);

#define BOXSIZE 40
#define PENRADIUS 3
int oldcolor, currentcolor;

void setup(void) {
  Serial.begin(9600);
  Serial.println(F("Paint!"));
  
  tft.reset();
  
  uint16_t identifier = tft.readID();
  if(identifier == 0x9325) {
    Serial.println(F("Found ILI9325 LCD driver"));
  } else if(identifier == 0x9328) {
    Serial.println(F("Found ILI9328 LCD driver"));
  } else if(identifier == 0x4535) {
    Serial.println(F("Found LGDP4535 LCD driver"));
  }else if(identifier == 0x7575) {
    Serial.println(F("Found HX8347G LCD driver"));
  } else if(identifier == 0x9341) {
    Serial.println(F("Found ILI9341 LCD driver"));
  } else if(identifier == 0x8357) {
    Serial.println(F("Found HX8357D LCD driver"));
  } else if(identifier==0x0101)
  {     
      identifier=0x9341;
       Serial.println(F("Found 0x9341 LCD driver"));
  }else {
    Serial.print(F("Unknown LCD driver chip: "));
    Serial.println(identifier, HEX);
    Serial.println(F("If using the Elegoo 2.8\" TFT Arduino shield, the line:"));
    Serial.println(F("  #define USE_Elegoo_SHIELD_PINOUT"));
    Serial.println(F("should appear in the library header (Elegoo_TFT.h)."));
    Serial.println(F("If using the breakout board, it should NOT be #defined!"));
    Serial.println(F("Also if using the breakout, double-check that all wiring"));
    Serial.println(F("matches the tutorial."));
    identifier=0x9341;
   
  }

  tft.begin(identifier);
  tft.setRotation(2);

  tft.fillScreen(BLACK);

  tft.fillRect(0, 0, BOXSIZE, BOXSIZE, RED);
  tft.fillRect(BOXSIZE, 0, BOXSIZE, BOXSIZE, YELLOW);
  tft.fillRect(BOXSIZE*2, 0, BOXSIZE, BOXSIZE, GREEN);
  tft.fillRect(BOXSIZE*3, 0, BOXSIZE, BOXSIZE, CYAN);
  tft.fillRect(BOXSIZE*4, 0, BOXSIZE, BOXSIZE, BLUE);
  tft.fillRect(BOXSIZE*5, 0, BOXSIZE, BOXSIZE, MAGENTA);
  // tft.fillRect(BOXSIZE*6, 0, BOXSIZE, BOXSIZE, WHITE);
 
  tft.drawRect(0, 0, BOXSIZE, BOXSIZE, WHITE);
  currentcolor = RED;
 
  pinMode(13, OUTPUT);
}

#define MINPRESSURE 10
#define MAXPRESSURE 1000

void loop()
{
  digitalWrite(13, HIGH);
  TSPoint p = ts.getPoint();
  digitalWrite(13, LOW);

  // if sharing pins, you'll need to fix the directions of the touchscreen pins
  //pinMode(XP, OUTPUT);
  pinMode(XM, OUTPUT);
  pinMode(YP, OUTPUT);
  //pinMode(YM, OUTPUT);

  // we have some minimum pressure we consider 'valid'
  // pressure of 0 means no pressing!

  if (p.z > MINPRESSURE && p.z < MAXPRESSURE) {
    /*
    Serial.print("X = "); Serial.print(p.x);
    Serial.print("\tY = "); Serial.print(p.y);
    Serial.print("\tPressure = "); Serial.println(p.z);
    */
    
    if (p.y < (TS_MINY-5)) {
      Serial.println("erase");
      // press the bottom of the screen to erase 
      tft.fillRect(0, BOXSIZE, tft.width(), tft.height()-BOXSIZE, BLACK);
    }
    // scale from 0->1023 to tft.width
    p.x = map(p.x, TS_MINX, TS_MAXX, tft.width(), 0);
    //p.x = tft.width()-map(p.x, TS_MINX, TS_MAXX, tft.width(), 0);
    p.y = (tft.height()-map(p.y, TS_MINY, TS_MAXY, tft.height(), 0));
     //p.y = map(p.y, TS_MINY, TS_MAXY, tft.height(), 0);
    /*
    Serial.print("("); Serial.print(p.x);
    Serial.print(



And despite the different number sketches, the error messages are all a variant on.....


Arduino: 1.8.6 (Windows 10), Board: "Arduino/Genuino Uno"

drawNumber:8:19: error: TFTv2.h: No such file or directory

compilation terminated.

exit status 1
TFTv2.h: No such file or directory

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.



This sketch (and the others) have all been followed from various instrucional CD. I have followed all the instructions and installed all the libraries as instructed.


There is a note saying that if I am using a mega I need to use a different sketch..


Paint example specifically for the TFTLCD breakout board.
// If using the Arduino shield, use the tftpaint_shield.pde sketch instead!

but i am using just the screen and the mega.... do I use that sketch above?

and if so, where would I find it, I spent many hours on google trying t find that one, but I only seem to be able to find the same sketch, telling me to use the one I cannot find......  :o 

So to make it eaiser, I decided to use my uno, seeing as all the sketches seem to state they are uno compatible....

and I get the same complier error.



Please can someone save my sanity >

There is more code, but I didn't post that... as the compliler never gets there in the first place...

Also I was limited to 1000 word...

But please ask if you need anything else....

It appears

all is well...

over time, the libraries get spread around.

I simply backed all my written code up, then aggressively unintalled Arduino environment, snd reinstalled it,

Job done....

Your message describe "Arduino: 1.8.6 (Windows 10), board: Arduino/Genuino Uno"
First, I think you should check your mega2560 Board model and Serial Port. In addition, I suggest you install the three library functions required in the program.