How to Use Adafruit OLED Color 0.96 inch 96x64 w microSD: Examples, Pinouts, and Specs

The Adafruit OLED Color 0.96 inch 96x64 with microSD is a compact and vibrant display module suitable for adding visual output to your electronics projects. This OLED (Organic Light Emitting Diode) display boasts a 96x64 pixel resolution with full-color capabilities, making it ideal for displaying graphics, images, and custom user interfaces. The inclusion of a microSD card slot allows for expanded storage options, enabling the display of images and data files directly from a microSD card.

• Wearable devices
• Portable instruments
• User interfaces for small-scale projects
• Data visualization for sensors
• Custom clocks and timers

• Display Type: OLED
• Screen Size: 0.96 inches diagonal
• Resolution: 96x64 pixels
• Color Depth: 16-bit color
• Interface: SPI/I2C
• Operating Voltage: 3.3V - 5V
• Logic Level: 3.3V (5V tolerant)

1. Power Connections: Connect the VCC pin to a 3.3V or 5V power supply and the GND pin to the ground of your system.
2. Data Connections: For SPI mode, connect SCL, SDA, RES, DC, and CS to the corresponding pins on your microcontroller. For I2C mode, only SCL and SDA are required.
3. microSD Slot: Insert a formatted microSD card into the slot if you intend to use the onboard storage for displaying images.

• Always ensure that the power supply is within the specified voltage range to prevent damage.
• Use level shifters if you are interfacing with a microcontroller that operates at a different logic level than the display.
• When using SPI mode, ensure that the CS pin is correctly managed to avoid conflicts with other SPI devices on the same bus.
• For optimal performance, use a high-quality, branded microSD card formatted to FAT16 or FAT32.

#include <Adafruit_GFX.h>    // Include core graphics library for the display
#include <Adafruit_SSD1331.h> // Include the OLED driver library

// Pin definitions for the Arduino UNO
#define sclk 13
#define mosi 11
#define cs   10
#define rst  9
#define dc   8

// Create an Adafruit_SSD1331 object
Adafruit_SSD1331 display = Adafruit_SSD1331(cs, dc, mosi, sclk, rst);

void setup() {
  display.begin(); // Initialize the display
  display.fillScreen(BLACK); // Clear the screen to black
}

void loop() {
  // Example: Draw a red rectangle
  display.drawRect(10, 10, 50, 40, RED);
  delay(500);
  // Example: Fill the rectangle with blue color
  display.fillRect(10, 10, 50, 40, BLUE);
  delay(500);
}

Note: This example assumes that the display is connected in SPI mode. Make sure to install the Adafruit GFX and SSD1331 libraries before uploading the code to your Arduino UNO.

• Display Not Powering On: Check the power connections and ensure the voltage is within the specified range.
• No Image Displayed: Verify that the SPI/I2C connections are correct and that the correct communication protocol is selected in your code.
• Corrupted Images: Ensure that the microSD card is properly formatted and that the image files are not corrupted.

• Double-check wiring against the pin configuration table.
• Use example sketches from the Adafruit libraries to test basic functionality.
• If using SPI, ensure that other SPI devices are not interfering with the display's operation.

Q: Can I power the display with 5V? A: Yes, the display can be powered with a 5V supply, but the logic level for data pins is 3.3V.

Q: How do I store images on the microSD card for the display? A: Images should be stored in a compatible format (e.g., BMP) and the card should be formatted to FAT16 or FAT32.

Q: Can I use this display with other microcontrollers besides Arduino UNO? A: Yes, the display can be used with any microcontroller that supports SPI or I2C communication, provided you adapt the pin connections and logic levels accordingly.