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Arduino 3.2in TFT LCD Display Shield

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Display Type

3.2-inch TFT LCD

Resolution

240x320 pixels

Aspect Ratio

43

Interface

8-bit parallel

  • Display Controller:

The shield is equipped with an ST7735R display controller, which provides a simple and efficient way to control the display.

  • Arduino Compatibility:

Designed to be compatible with most Arduino boards, including Arduino Uno, Arduino Mega, and Arduino Due.

  • Power Supply:

The shield can be powered directly from the Arduino board or through an external power source (5V).

  • IO Interface:

The shield provides a standard Arduino header, allowing for easy connection to the Arduino board.

  • Additional Features:

Built-in resistive touchscreen controller (optional)

Supports multiple display modes, including landscape and portrait orientations

Supports various fonts, graphics, and image formats

  • Dimensions:

Length

55mm

Width

35mm

Height

20mm

Operating Conditions

Operating Temperature

0C to 50C

Storage Temperature

-20C to 80C

Humidity

5% to 95% RH (non-condensing)

Software Support

The Arduino 3.2in TFT LCD Display Shield is supported by the Arduino Integrated Development Environment (IDE) and various libraries, including the Arduino TFT library, which provides an intuitive API for controlling the display.

Applications

The Arduino 3.2in TFT LCD Display Shield is suitable for a wide range of applications, including

IoT projects requiring visual feedback, such as temperature monitoring, humidity monitoring, or air quality monitoring

Home automation systems, such as thermostat controls, lighting systems, or security systems

Robotics and autonomous systems, such as robotic arms, robotic platforms, or autonomous vehicles

Wearable devices, such as smartwatches, fitness trackers, or health monitoring devices

Industrial control systems, such as process monitoring, machine control, or data acquisition systems

By combining the Arduino 3.2in TFT LCD Display Shield with an Arduino board, developers can create a wide range of innovative and interactive projects that leverage the power of visual feedback and intuitive user interfaces.

Pin Configuration

  • Arduino 3.2in TFT LCD Display Shield Pinout Guide
  • The Arduino 3.2in TFT LCD Display Shield is a versatile and user-friendly display module designed for Arduino boards. The shield features a 3.2-inch TFT LCD display with a resolution of 240x320 pixels and 16-bit color depth. This guide will help you understand the pinout of the shield and how to connect it to your Arduino board.
  • Pinout Structure:
  • The Arduino 3.2in TFT LCD Display Shield has a total of 24 pins, which can be divided into three main categories:
  • 1. Power and Ground Pins (6 pins)
  • 2. Digital Pins (12 pins)
  • 3. Analog Pins (6 pins)
  • Power and Ground Pins:
  • VCC (Pin 1): Connect to the Arduino board's 5V power pin.
  • GND (Pin 2): Connect to the Arduino board's Ground pin.
  • VIN (Pin 3): Optional, can be connected to the Arduino board's Vin pin (Input voltage).
  • 3.3V (Pin 4): Optional, can be used as a separate power source for the TFT display.
  • GND (Pin 5): Duplicate ground pin for convenience.
  • LED (Pin 6): Backlight LED control pin. Connect to a digital pin on the Arduino board to control the backlight.
  • Digital Pins:
  • D0 (Pin 7): Digital pin for TFT display data bus (Data0).
  • D1 (Pin 8): Digital pin for TFT display data bus (Data1).
  • D2 (Pin 9): Digital pin for TFT display data bus (Data2).
  • D3 (Pin 10): Digital pin for TFT display data bus (Data3).
  • D4 (Pin 11): Digital pin for TFT display data bus (Data4).
  • D5 (Pin 12): Digital pin for TFT display data bus (Data5).
  • D6 (Pin 13): Digital pin for TFT display data bus (Data6).
  • D7 (Pin 14): Digital pin for TFT display data bus (Data7).
  • CS (Pin 15): Chip select pin for the TFT display.
  • WR (Pin 16): Write strobe pin for the TFT display.
  • RD (Pin 17): Read strobe pin for the TFT display.
  • RS (Pin 18): Register select pin for the TFT display.
  • Analog Pins:
  • A0 (Pin 19): Analog input pin for the TFT display's touch panel (X-axis).
  • A1 (Pin 20): Analog input pin for the TFT display's touch panel (Y-axis).
  • A2 (Pin 21): Not used.
  • A3 (Pin 22): Not used.
  • A4 (Pin 23): Not used.
  • A5 (Pin 24): Not used.
  • Connecting the Pins:
  • To use the Arduino 3.2in TFT LCD Display Shield, connect the required pins to your Arduino board as follows:
  • 1. Connect VCC to the Arduino board's 5V power pin.
  • 2. Connect GND to the Arduino board's Ground pin.
  • 3. Connect the digital pins (D0 to D7, CS, WR, RD, and RS) to digital pins on the Arduino board.
  • 4. Connect the analog pins (A0 and A1) to analog pins on the Arduino board (if using the touch panel).
  • 5. Connect the LED pin to a digital pin on the Arduino board to control the backlight.
  • 6. Optional: Connect VIN to the Arduino board's Vin pin, and 3.3V to a separate power source (if required).
  • Note: Ensure that the pins are connected correctly and securely to avoid damage to the shield or the Arduino board. Always refer to the Arduino board's pinout and the TFT display shield's documentation for specific connection requirements.

Code Examples

Arduino 3.2in TFT LCD Display Shield Documentation
Overview
The Arduino 3.2in TFT LCD Display Shield is a versatile display module designed for use with Arduino boards. It features a 3.2-inch color TFT LCD display with a resolution of 240x320 pixels, making it ideal for a wide range of projects that require a graphical user interface. This shield is compatible with most Arduino boards, including the Uno, Duemilanove, and Mega.
Technical Specifications
Display Type: 3.2-inch Color TFT LCD
 Resolution: 240x320 pixels
 Interface: SPI (Serial Peripheral Interface)
 Power Supply: 5V
 Dimensions: 54.5mm x 84.5mm
Getting Started
To use the Arduino 3.2in TFT LCD Display Shield, you'll need:
1. An Arduino board (e.g., Uno, Duemilanove, or Mega)
2. The Arduino 3.2in TFT LCD Display Shield
3. A micro-USB cable for programming the Arduino board
4. The TFTLCD library (available on the Arduino Library page)
Code Examples
### Example 1: Displaying Text and Graphics
This example demonstrates how to display text and graphics on the TFT LCD display using the TFTLCD library.
```c++
#include <TFTLCD.h>
TFT_LCD tft = TFT_LCD();
void setup() {
  tft.begin(); // Initialize the TFT LCD display
  tft.setTextSize(2); // Set the text size to 2
  tft.setTextColor(TFT_WHITE, TFT_BLACK); // Set the text color to white on a black background
  tft.fillScreen(TFT_BLACK); // Clear the screen with a black background
}
void loop() {
  tft.setCursor(0, 0); // Set the cursor to the top-left corner
  tft.println("Hello, World!"); // Print a message on the display
  
  // Draw a red rectangle
  tft.fillRect(10, 20, 40, 20, TFT_RED);
  delay(1000);
  
  // Clear the screen and draw a blue circle
  tft.fillScreen(TFT_BLACK);
  tft.fillCircle(60, 60, 20, TFT_BLUE);
  delay(1000);
}
```
### Example 2: Creating a Simple GUI with Buttons
This example showcases how to create a simple graphical user interface (GUI) with buttons using the TFTLCD library.
```c++
#include <TFTLCD.h>
TFT_LCD tft = TFT_LCD();
int buttonState = 0;
void setup() {
  tft.begin(); // Initialize the TFT LCD display
  tft.setTextSize(2); // Set the text size to 2
  tft.setTextColor(TFT_WHITE, TFT_BLACK); // Set the text color to white on a black background
  tft.fillScreen(TFT_BLACK); // Clear the screen with a black background
  
  // Draw three buttons
  tft.drawRect(10, 20, 40, 20, TFT_WHITE); // Button 1
  tft.drawRect(60, 20, 40, 20, TFT_WHITE); // Button 2
  tft.drawRect(110, 20, 40, 20, TFT_WHITE); // Button 3
}
void loop() {
  // Read the state of a button (e.g., using a digital input pin)
  buttonState = digitalRead(2);
  
  if (buttonState == HIGH) {
    // Handle button press event
    tft.fillRect(10, 20, 40, 20, TFT_RED); // Highlight Button 1
    delay(500);
    tft.fillRect(10, 20, 40, 20, TFT_WHITE); // Reset Button 1
  }
  
  // Repeat for other buttons...
}
```
Notes and References
The TFTLCD library provides an extensive range of functions for drawing shapes, text, and images on the display.
 For more information on the TFTLCD library, refer to the official Arduino documentation and example code.
 When using the Arduino 3.2in TFT LCD Display Shield, ensure that the display is properly connected to the Arduino board and that the TFTLCD library is installed.
By following these examples and familiarizing yourself with the TFTLCD library, you can unlock the full potential of the Arduino 3.2in TFT LCD Display Shield and create a wide range of innovative projects.