How to Use 1.47" 320x172 Round Rectangle Color IPS TFT Display: Examples, Pinouts, and Specs

The 1.47" 320x172 Round Rectangle Color IPS TFT Display (Manufacturer Part ID: 5393) by Adafruit is a compact and vibrant display module designed for modern applications. With its IPS (In-Plane Switching) technology, it offers wide viewing angles and excellent color reproduction, making it ideal for projects requiring high-quality visuals. Its unique round rectangle shape adds a sleek and modern aesthetic to wearable devices, handheld gadgets, and IoT projects.

• Wearable devices (e.g., smartwatches, fitness trackers)
• Handheld devices and portable displays
• IoT dashboards and control panels
• Compact user interfaces for embedded systems
• Educational and prototyping projects

Below are the key technical details of the 1.47" 320x172 Round Rectangle Color IPS TFT Display:

The display module has a total of 7 pins. Below is the pinout and description:

To use the 1.47" 320x172 Round Rectangle Color IPS TFT Display, follow these steps:

1. Power Supply: Connect the VIN pin to a 3.3V or 5V power source and the GND pin to ground.
2. SPI Interface: Connect the SCK (SPI clock) and MOSI (SPI data) pins to the corresponding SPI pins on your microcontroller.
3. Control Pins:
   • Connect the CS pin to a GPIO pin on your microcontroller to enable/disable the display.
   • Connect the DC pin to a GPIO pin to toggle between data and command modes.
   • Connect the RST pin to a GPIO pin for resetting the display.

Below is an example of how to connect and use the display with an Arduino UNO. This example uses the Adafruit_GFX and Adafruit_ST7735 libraries, which are compatible with this display.

#include <Adafruit_GFX.h>      // Core graphics library
#include <Adafruit_ST7735.h>   // Library for ST7735 and ST7789 displays
#include <SPI.h>               // SPI library

// Define pins for the display
#define TFT_CS   10  // Chip Select pin
#define TFT_DC   9   // Data/Command pin
#define TFT_RST  8   // Reset 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_MINI160x80);  // Initialize with the correct driver
  tft.setRotation(1);          // Set display orientation (1 = landscape)

  // Clear the screen with a black background
  tft.fillScreen(ST77XX_BLACK);

  // Display a message
  tft.setTextColor(ST77XX_WHITE);  // Set text color to white
  tft.setTextSize(1);              // Set text size
  tft.setCursor(10, 10);           // Set cursor position
  tft.println("Hello, World!");    // Print text to the display
}

void loop() {
  // Add your code here to update the display
}

• Voltage Compatibility: Ensure your microcontroller operates at 3.3V or 5V logic levels to avoid damaging the display.
• SPI Speed: Use a moderate SPI clock speed (e.g., 4 MHz) to ensure stable communication.
• Backlight Control: The backlight is always on by default. To control it, you can use a transistor or PWM pin.

1. No Display Output:

   • Verify all connections, especially power (VIN and GND) and SPI pins (SCK, MOSI, CS).
   • Ensure the RST pin is properly connected and initialized in the code.

2. Flickering or Artifacts:

   • Check the SPI clock speed. Reduce it if necessary.
   • Ensure proper grounding between the display and the microcontroller.

3. Incorrect Colors or Orientation:

   • Verify the initialization code. Use the correct driver (INITR_MINI160x80).
   • Check the setRotation() function to ensure the desired orientation.

4. Backlight Not Working:

   • Ensure the display is receiving sufficient power (3.3V or 5V).
   • Check for any loose connections.

• Use a multimeter to verify power and ground connections.
• Test the display with a simple example sketch to rule out software issues.
• Refer to the Adafruit forums or documentation for additional support.

By following this documentation, you can successfully integrate the 1.47" 320x172 Round Rectangle Color IPS TFT Display into your projects and enjoy its vibrant visuals and compact design!