This article I2C OLED Display with Arduino demonstrates how to use the Arduino and the SSD1306 0.96-inch I2C OLED display. We’ll show you some features of the OLED display, how to connect it to the Arduino board, and how to write text, draw shapes and display bitmap images.




In the realm of DIY electronics, one of the most fascinating combinations is the Arduino microcontroller and OLED displays. In this beginner’s guide, we will delve into the world of I2C OLED displays and explore how to integrate them with an Arduino. By the end of this article, you will have the knowledge and confidence to embark on exciting projects of your own.

What is an OLED Display?

An OLED (Organic Light-Emitting Diode) display is a cutting-edge technology that emits light when an electric current is applied. Unlike traditional LCDs, OLEDs do not require a backlight, resulting in vibrant colors, high contrast, and excellent visibility, even in low-light conditions. These displays are widely used in smartphones, smartwatches, and numerous other electronic devices.

OLED Display

What is I2C Communication?

Inter-Integrated Circuit (I2C) is a simple and widely-used serial communication protocol that enables multiple devices to communicate over just two wires: SDA (Serial Data) and SCL (Serial Clock). I2C is particularly useful for connecting peripherals, like OLED displays, to microcontrollers such as Arduino, allowing seamless data exchange between devices.

Working Principle Of I2C OLED Display with Arduino

The I2C OLED display with Arduino works by establishing communication between the Arduino and the display using the I2C protocol. The Arduino sends commands and data to the display, which processes and controls the individual pixels on the OLED screen to display the desired content. The Arduino can continuously update the display, making it suitable for various applications, from basic text displays to more interactive and dynamic projects.

Bill Of Materials

1Arduino BoardArduino nano1https://amzn.to/3Qe71y5
2Connecting wiresjumper wiresomehttps://amzn.to/3fMoSw7
4OLED DisplaySSD1306 0.96-inch1https://amzn.to/3q6XX3p


Circuit Diagram

Circuit Diagram Of I2C OLED Display with Arduino
  1. Connect the GND pin of the OLED display to any GND pin on the Arduino board.
  2. Connect the VCC pin of the OLED display to the 5V pin on the Arduino board.
  3. Connect the SDA pin of the OLED display to the A4 (Analog 4) pin on the Arduino board.
  4. Connect the SCL pin of the OLED display to the A5 (Analog 5) pin on the Arduino board


To control the OLED display you need the adafruit_SSD1306.h and the adafruit_GFX.h libraries. Follow the next instructions to install those libraries.

1. Open your Arduino IDE and go to Sketch Include Library > Manage Libraries. The Library Manager should open.

2. Type “SSD1306” in the search box and install the SSD1306 library from Adafruit.

Installing SSD1306 OLED Library ESP8266 ESP32 Arduino

3. After installing the SSD1306 library from Adafruit, type “GFX” in the search box and install the library

Installing GFX Library ESP8266 ESP32 Arduino

Testing the OLED Display

After wiring the OLED display to the Arduino and installing all required libraries, you can use one example from the library to see if everything is working properly.

In your Arduino IDE, go to File > Examples Adafruit SSD1306 and select the example for the display you’re using.

Testing Adafruit SSD1306 Library example

You should get a series of different animations in the OLED as shown in the following

Schematic Diagram

PCB Diagram

3D Diagram

Manufacturing Files

Bill of materials


Position Files


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By combining the power of Arduino and the allure of OLED displays, you have unlocked a realm of limitless creativity and innovation. As a beginner, this guide has equipped you with the essential knowledge to undertake exciting projects with confidence. Whether you wish to create informative displays, interactive gadgets, or sensor-based applications, the combination of I2C OLED displays and Arduino will be your faithful companions in turning your ideas into reality.