How to Use Display TFT LCD 1.44" 128x128 8 Pinos: Examples, Pinouts, and Specs

The Display TFT LCD 1.44" 128x128 is a compact and versatile display module designed for use in a wide range of electronic projects. With a resolution of 128x128 pixels, it is ideal for displaying graphics, text, and simple user interfaces. Its 8-pin configuration makes it easy to connect to microcontrollers, such as Arduino, Raspberry Pi, or other embedded systems.

• Portable devices with graphical interfaces
• DIY projects requiring a small display
• Wearable electronics
• Sensor data visualization
• Gaming or retro-style displays
• Educational projects for learning about displays and graphics

Below are the key technical details of the Display TFT LCD 1.44" 128x128:

The module has 8 pins, as described in the table below:

1. Power Supply: Connect the VCC pin to a 3.3V or 5V power source and the GND pin to ground.
2. SPI Communication: Connect the SCL (clock) and SDA (data) pins to the corresponding SPI pins on your microcontroller.
3. Control Pins:
   • Connect the RES pin to a GPIO pin on your microcontroller for resetting the display.
   • Use the DC pin to toggle between sending data or commands.
   • Connect the CS pin to a GPIO pin to enable or disable the display.
4. Backlight: Connect the BLK pin to VCC for a constant backlight or to a PWM pin for adjustable brightness.

• Voltage Compatibility: Ensure your microcontroller's logic level matches the display's voltage requirements. Use a level shifter if necessary.
• SPI Speed: Check the maximum SPI clock speed supported by the display (typically 10-15 MHz).
• Initialization: The display requires specific initialization commands to function correctly. Use a library like Adafruit GFX or TFT_eSPI for easier setup.
• Backlight Control: If using PWM for the backlight, ensure the frequency is high enough to avoid visible flickering.

Below is an example of how to use the display with an Arduino UNO using the Adafruit ST7735 library:

#include <Adafruit_GFX.h>    // Core graphics library
#include <Adafruit_ST7735.h> // Hardware-specific library for ST7735

// Define pins for the display
#define TFT_CS   10  // Chip Select pin
#define TFT_RST  9   // Reset pin
#define TFT_DC   8   // Data/Command pin

// Create an instance of the display
Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_RST);

void setup() {
  // Initialize the display
  tft.initR(INITR_144GREENTAB); // Use the correct tab type for your display
  tft.fillScreen(ST77XX_BLACK); // Clear the screen with black color

  // Display some text
  tft.setTextColor(ST77XX_WHITE); // Set text color to white
  tft.setTextSize(1);             // Set text size
  tft.setCursor(0, 0);            // Set cursor position
  tft.println("Hello, World!");   // Print text to the display
}

void loop() {
  // Add your code here
}

• Install the Adafruit GFX and Adafruit ST7735 libraries via the Arduino Library Manager before running the code.
• Adjust the pin definitions (TFT_CS, TFT_RST, TFT_DC) to match your wiring.

1. Display Not Turning On:

   • Check the power connections (VCC and GND).
   • Ensure the CS pin is set to LOW during communication.

2. No Image or Incorrect Display:

   • Verify the SPI connections (SCL and SDA).
   • Ensure the correct initialization commands are used (e.g., INITR_144GREENTAB for Adafruit ST7735).

3. Flickering Backlight:

   • If using PWM for the backlight, increase the PWM frequency to reduce flicker.

4. Distorted Graphics:

   • Check the SPI clock speed. Reduce it if the display cannot handle the current speed.
   • Ensure the DC pin is toggled correctly between data and command modes.

Q: Can I use this display with a 5V microcontroller?
A: Yes, the display supports 5V logic levels, but ensure proper wiring and connections.

Q: How do I control the brightness of the backlight?
A: Connect the BLK pin to a PWM-capable pin on your microcontroller and adjust the duty cycle.

Q: What is the maximum SPI clock speed for this display?
A: The maximum SPI clock speed is typically 10-15 MHz. Check the datasheet for exact details.

Q: Can I use this display with a Raspberry Pi?
A: Yes, the display is compatible with Raspberry Pi. Use libraries like luma.lcd or ST7735 for Python.

By following this documentation, you can effectively integrate the Display TFT LCD 1.44" 128x128 into your projects and troubleshoot common issues.