I bought one of these from Banggood (Both unoR3 and 2.4"TFT) what a pain to get everything working....after a lot of reading forums and testing library's I finally got everything working, not bad for a first timer lol.
From what I gather there are a few different models of screen drivers, the one I have is ILI9341 8bit
So I used include files for the TFT screen;
Adafruit_GFX_AS.h
Adafruit_GFX.h
Adafruit_ILI9341_8bit_AS.h
For the Touch part I used;
"TouchScreen.h" From Touch-Screen-Library-Master demo
For the SD Card I used the Arduino SD library after changing the following to work with the screen;
#define LCD_CS A3 // Chip Select goes to Analog 3
#define LCD_CD A2 // Command/Data goes to Analog 2
#define LCD_WR A1 // LCD Write goes to Analog 1
#define LCD_RD A0 // LCD Read goes to Analog 0
#define LCD_RESET A4 // Can alternately just connect to Arduino's reset pin
#define SD_CS 10 // Card select for shield use
Adafruit_ILI9341_8bit_AS tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
Mike C.