Creating a Simple Interface for a 128×128 Display

In the world of embedded systems, small displays are incredibly useful for providing feedback and information in a compact form. Among these, the 128×128 pixel displays are popular due to their balance of size and resolution. In this blog, we’ll explore how to set up and use a 128×128 display, focusing on the necessary hardware, software libraries, and basic coding to get started.

Hardware Requirements

To get started with a 128×128 display, you will need:

  1. 128×128 Display Module: Typically, these displays use OLED or LCD technology.
  2. Microcontroller: Arduino, ESP32, or any compatible microcontroller.
  3. Connecting Wires: Jumper wires or a breadboard for connections.
  4. Power Supply: Ensure your microcontroller and display have a compatible power source.

Setting Up the Display

Step 1: Wiring the Display

First, connect your display to the microcontroller. The connections usually involve the following pins:

  • VCC: Connect to 3.3V or 5V power supply (depending on the display).
  • GND: Connect to the ground.
  • SCL (Serial Clock): Connect to the SCL pin on the microcontroller.
  • SDA (Serial Data): Connect to the SDA pin on the microcontroller.

Refer to the datasheet of your specific display for exact pin configuration.

Step 2: Installing Libraries

For an Arduino setup, you’ll need specific libraries to interface with the display. The Adafruit GFX and Adafruit SSD1351 libraries are commonly used for OLED displays. You can install these libraries via the Arduino IDE:


Setting up a 128×128 display can greatly enhance your projects by providing a visual interface. With a few connections and some simple code, you can display text and graphics, making your projects more interactive and user-friendly. As you become more familiar with the display, you can explore more advanced features such as custom graphics, animations, and interactive menus. Happy coding!

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