Monochrome 0.91 128x32 I2C OLED Display - STEMMA QT / Qwiic

These compact displays have a diagonal of just about 1 inch, but offer excellent readability thanks to the high contrast of OLED technology. Composed of 128x32 individual white OLED pixels controlled by a chip, they emit their own light, eliminating the need for a backlight. This not only cuts power consumption but also results in a sharp and clear display that we really love! To simplify your work, we've mounted the OLED on a breakout PCB with support circuitry. It's compatible with both 3.3V (Feather/Raspberry Pi) and 5V (Arduino/Metro328) logic levels. The updated design features auto - reset circuitry, making the reset pin optional. With I2C communication, you can connect it using just two wires (plus power and ground). It also comes with SparkFun qwiic - compatible STEMMA QT connectors, so you don't have to solder. Just use a STEMMA QT adapter cable (not included, but available in our shop) to connect to your preferred microcontroller. Read our detailed tutorial with Arduino and Python/CircuitPython libraries for text and graphics. Note that you'll need a microcontroller with over 512 bytes of RAM as the display needs buffering. The power consumption averages about 20mA from a 3.3V supply. The built - in switch - cap charge pump easily converts 3.3V - 5V to a high - voltage drive for the OLEDs. Remember, OLEDs may dim if left on for over 1000 hours. Turn off the display when not in use to maintain uniform brightness.

Using this OLED display is a breeze. First, connect it to your microcontroller. If you want a no - solder experience, use a STEMMA QT adapter cable to hook it up to your favorite micro. The display works with both 3.3V and 5V logic levels, so you can choose the one that suits your project. Check our detailed tutorial that has Arduino and Python/CircuitPython libraries for both text and graphics. Just make sure your microcontroller has more than 512 bytes of RAM because the display needs to be buffered. As for power, it generally uses about 20mA from a 3.3V supply. Now, here are some things to keep in mind. OLED pixels can start to dim if they're on for more than 1000 hours. So, when you're not using the display, turn it off to keep it looking bright and sharp. This way, you can enjoy a long - lasting and clear display for all your projects.