Introduction

The 2.4-inch TFT LCD Shield features a 240×320 resolution resistive touch screen with 18-bit color (262K colors) and uses the SPFD5408 display controller. It plugs directly into Arduino UNO/Mega boards, providing a simple way to add graphical interfaces to projects.

Key Features

Technical Specifications

Pin Configuration

Arduino Pin	TFT Function	Touch Function
D2	LCD D7	–
D3	LCD D6	–
D4	LCD D5	–
D5	LCD D4	–
D6	LCD D3	–
D7	LCD D2	–
D8	LCD D1	–
D9	LCD D0	–
D10	LCD CS	–
D11	LCD MOSI	T_CLK
D12	LCD MISO	T_OUT
D13	LCD SCK	T_CS
A0	LCD RS/DC	–
A1	LCD WR	–
A2	LCD RD	–
A3	LCD RESET	–

Library Installation

1. Open Arduino IDE
2. Go to Sketch > Include Library > Manage Libraries
3. Search for “Adafruit ILI9341” and install
4. Search for “Adafruit GFX” and install
5. For touch: search “Adafruit TouchScreen“

Basic Display Test

#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>

#define TFT_CS 10
#define TFT_DC A0
#define TFT_RST A3

Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC, TFT_RST);

void setup() {
  tft.begin();
  tft.fillScreen(ILI9341_BLACK);
  tft.setRotation(3); // Adjust for your orientation
  
  tft.setTextColor(ILI9341_WHITE);  
  tft.setTextSize(2);
  tft.println("Hello World!");
  
  tft.drawRect(50, 50, 100, 50, ILI9341_RED);
  tft.fillCircle(150, 120, 30, ILI9341_BLUE);
}

void loop() {}

Touch Screen Example

#include <TouchScreen.h>

#define YP A2  // Must be an analog pin
#define XM A1  // Must be an analog pin
#define YM 8   // Can be a digital pin
#define XP 9   // Can be a digital pin

TouchScreen ts = TouchScreen(XP, YP, XM, YM, 300);

void setup() {
  Serial.begin(9600);
}

void loop() {
  TSPoint p = ts.getPoint();
  
  if (p.z > ts.pressureThreshhold) {
    Serial.print("X = "); Serial.print(p.x);
    Serial.print("\tY = "); Serial.print(p.y);
    Serial.print("\tPressure = "); Serial.println(p.z);
  }
  delay(100);
}

Display Optimization Tips

tft.setAddrWindow(x, y, w, h);
tft.pushColor(color, count);

tft.startWrite();
// Multiple draw operations
tft.endWrite();

#include <Fonts/FreeSansBold12pt7b.h>
tft.setFont(&FreeSansBold12pt7b);

Troubleshooting