2.8-Inch TFT LCD 240 x 320 RGB SPI Display with Touchscreen

Wiring Connections

• Wiring:
  • VCC (Power Supply): Connect to 3.3V or 5V power supply (check specific module requirements).
  • GND (Ground): Connect to the ground of the power supply.
  • CS (Chip Select): Connect to a digital I/O pin on the microcontroller to select the display.
  • RESET: Connect to a digital I/O pin for resetting the display.
  • DC (Data/Command): Connect to a digital I/O pin to switch between data and command modes.
  • SDI/MOSI (Serial Data Input): Connect to the microcontroller’s SPI MOSI pin.
  • SCK (Serial Clock): Connect to the microcontroller’s SPI SCK pin.
  • T_CLK (Touch Clock): Connect to a digital I/O pin for touch screen clock signal.
  • T_DO (Touch Data Out): Connect to the microcontroller to receive touch data.
  • T_DIN (Touch Data In): Connect to the microcontroller for touch data commands.

Power

• Operating Voltage:  3.3V or 5V (check module specifications).
• Current Consumption: Varies by usage, but generally low.

Input and Output

• Input: Receives display data and commands via SPI interface.
• Output: Displays visual data and touch inputs.

Physical Characteristics

• Display Size: 2.8 inches diagonally.
• Dimensions: Approximately 70 mm x 50 mm (varies by model).
• Touchscreen Type: Resistive, requiring physical pressure to register input.
• Mounting:  mounted using screw holes or adhesive pads.

Technical Specifications

• Display Technology: TFT (Thin-Film Transistor) LCD.
• Color Depth: 16-bit RGB, allowing for 65,536 colors.
• Interface: SPI (4-wire or 3-wire depending on the model).
• Touchscreen: Resistive with X and Y axis detection.
• Controller: Often ST7735 or similar, providing control for the display and touchscreen.

Additional Features

• Built-In Controller: Simplifies integration with microcontrollers.
• Touch Sensitivity: Allows for user input directly on the screen.
• High Contrast: Good contrast ratio for readability in various lighting conditions.

How to Use

1. Connect Power:

1. • Power Supply: Connect the VCC pin to your 3.3V or 5V power source, and connect the GND pin to the ground.

2. Wiring Connections:

1. • SPI Pins: Connect CS, RESET, DC, SDI/MOSI, and SCK pins to the corresponding SPI pins on your microcontroller.
   • Touchscreen Pins: Connect T_CLK, T_DO, and T_DIN to your microcontroller for touch functionality.

3. Initialize Display:

1. • Initialization Code: Use appropriate libraries and code to initialize the display and touchscreen. Libraries for Arduino and other platforms are available and often include example code.

4. Display Data:

1. • Drawing: Use the provided library functions to draw images, text, and graphics on the screen.
   • Color: Set pixel colors using RGB values.

5. Handle Touch Input:

1. • Read Touch Data: Use the touch input pins to read touch coordinates and implement user interface features.

6. Mount the Display:

1. • Secure Installation: Mount the display in your project enclosure or panel using screws or adhesive, ensuring that the touch panel is accessible.

7. Testing:

1. • Verify Functionality: Test the display and touchscreen functions to ensure proper operation and adjust the code as needed.

This 2.8-inch TFT LCD display with touchscreen is ideal for creating interactive and visually rich applications. Its compact size and high resolution make it suitable for a variety of projects, from small handheld devices to integrated displays in larger systems.