Adafruit Monochrome 2.3" 128x32 OLED Graphic Display Module Kit

If you've been interested in monochrome OLEDs but require something larger, this display is a perfect choice. At 2.3 inches diagonally, each of the 128x32 blue OLED pixels provides outstanding readability due to the high contrast OLED technology affords.

The display operates without a backlight, as it generates its own light, significantly reducing power consumption. It boasts a crisp graphic display that's easy to admire. The SSD1305 driver chip supports three communication methods: 8-bit, I2C, or SPI, with SPI being highly efficient using only 4 or 5 wires.

The OLED requires a 3.3V power supply and 3.3V logic levels. A breadboard-compatible level shifter is included, enabling compatibility with 5V logic devices like Arduino. On average, it uses about 50mA from the 3.3V supply depending on display usage.

The integrated boost converter stepping up 3.3V to high voltage for OLEDs, ensures efficient operation. A potential noise from the converter can be minimized with hot glue or foam tape around the inductor. The package includes an OLED module with a bezel, 4 mounting holes, an HC4050 level shifter, a 220uF capacitor, and a stick of header for soldering.

The display initially ships in 8-bit mode but can be switched to SPI or I2C with some soldering, guided by a detailed tutorial and example Arduino library for text and graphics. You'll need a microcontroller with more than 512 bytes of RAM to buffer the display, allowing the rendering of text, bitmaps, and shapes swiftly.

To maintain uniform brightness, turn off the display when idle to prevent the organic LEDs from dimming if a pixel remains on for over 1000 hours. This careful usage ensures prolonged vibrant performance.