How to Use Duinotech 1.3" OLED Screen SPI: Examples, Pinouts, and Specs

The Duinotech 1.3" OLED Screen SPI is a compact and versatile display module designed for embedded systems. Featuring a 1.3-inch OLED screen with a resolution of 128x64 pixels, this module provides crisp and clear visuals for text, graphics, and animations. It uses the SPI (Serial Peripheral Interface) communication protocol, ensuring fast and reliable data transfer between the display and microcontrollers.

This OLED screen is ideal for a wide range of applications, including:

• DIY electronics projects
• IoT devices
• Wearable technology
• Data visualization for sensors
• Compact user interfaces for embedded systems

Below are the key technical details of the Duinotech 1.3" OLED Screen SPI:

The Duinotech 1.3" OLED Screen SPI has a 7-pin interface. Below is the pinout and description:

1. Power Supply: Connect the VCC pin to a 3.3V or 5V power source and the GND pin to ground.
2. SPI Connections: 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.
   • Connect the DC pin to a GPIO pin to toggle between data and command modes.
   • Connect the CS pin to a GPIO pin to enable or disable the display.
4. Pull-Up Resistors: Ensure that the SPI lines have appropriate pull-up resistors if required by your microcontroller.

• Voltage Compatibility: Ensure the microcontroller's logic level matches the display's voltage (3.3V or 5V).
• Reset Timing: Hold the RES pin low for at least 10ms during initialization to reset the display.
• SPI Speed: Use an SPI clock speed of up to 10MHz for optimal performance.
• Library Support: Use an SSD1306-compatible library for easier integration with microcontrollers like Arduino.

Below is an example of how to use the Duinotech 1.3" OLED Screen SPI with an Arduino UNO. This code uses the popular Adafruit_SSD1306 library.

#include <Adafruit_GFX.h>       // Graphics library for OLED
#include <Adafruit_SSD1306.h>  // SSD1306 driver library

#define SCREEN_WIDTH 128        // OLED display width, in pixels
#define SCREEN_HEIGHT 64        // OLED display height, in pixels

// Declaration for SPI OLED display
#define OLED_MOSI   11          // Data pin (SDA)
#define OLED_CLK    13          // Clock pin (SCL)
#define OLED_DC     9           // Data/Command pin
#define OLED_CS     10          // Chip Select pin
#define OLED_RESET  8           // Reset pin

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &SPI, OLED_DC, OLED_RESET, OLED_CS);

void setup() {
  // Initialize the display
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    // 0x3C is the I2C address; not used in SPI but required for library
    Serial.println(F("SSD1306 allocation failed"));
    for (;;); // Loop forever if initialization fails
  }

  display.clearDisplay();        // Clear the buffer
  display.setTextSize(1);        // Set text size to 1
  display.setTextColor(SSD1306_WHITE); // Set text color to white
  display.setCursor(0, 0);       // Set cursor to top-left corner
  display.println(F("Hello, Duinotech!")); // Print text
  display.display();             // Display the text
}

void loop() {
  // Add your code here for dynamic updates
}

1. Display Not Turning On:

   • Verify the power supply connections (VCC and GND).
   • Ensure the CS pin is correctly connected and set low during communication.

2. No Output on the Screen:

   • Check the SPI connections (SCL and SDA) for loose or incorrect wiring.
   • Ensure the RES pin is properly toggled during initialization.

3. Flickering or Corrupted Display:

   • Reduce the SPI clock speed to improve signal integrity.
   • Check for noise or interference on the SPI lines.

4. Library Errors:

   • Ensure the Adafruit_SSD1306 and Adafruit_GFX libraries are installed in the Arduino IDE.
   • Verify that the correct pins are defined in the code.

Q: Can I use this display with a 3.3V microcontroller?
A: Yes, the display is compatible with both 3.3V and 5V logic levels.

Q: What is the maximum SPI clock speed supported?
A: The display supports SPI clock speeds of up to 10MHz.

Q: Can I use this display with I2C instead of SPI?
A: No, this specific model is designed for SPI communication only.

Q: How do I display custom graphics?
A: Use the Adafruit_GFX library to draw shapes, bitmaps, and other graphics on the screen.

Q: Is the display sunlight-readable?
A: While the OLED screen is bright, it may not be easily readable in direct sunlight.

By following this documentation, you can effectively integrate the Duinotech 1.3" OLED Screen SPI into your projects and troubleshoot common issues.