• Arduino UNO

Introduction

In this tutorial, we are going to learn how to interface with an OLED Display. Also, we will discuss OLED Display.

 

Theory

OLED Display is briefly known as Organic Light Emitting Diode.

It has a self-light-emitting technology composed of a thin, multi-layered organic film placed between an anode and cathode.

It is a display of 0.96 inches and a resolution of 128*64.

It didn't require a backlight.

It works on the I2C communication protocol.

 

 

It has 4 pins,

i)VCC

ii)GND

iii)SCK (Serial Clock)

iv)SDA (Serial Data)

 

 

Parts Required

 

Parts	Quantity
Arduino UNO	1
A-B cable	1
OLED Display	1
Bread Board	1
Connecting Wires	As per required

 

Circuit Diagram

 

Code

For programming this concept we need to understand some basic syntax of Arduino IDE. The first thing is we need to install Arduino.

After installing you need to add some libraries.

Go to Sketch>Include Library>Manage Libraries...

Then search Adafruit_GFX.h , Adafruit_SSD1306.h , and add it.

You can also download it from the link.

After installation, all libraries call the libraries.

 

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

 

After calling, go for the void setup function.

In this, we will write how to show data in the display.

 

void setup()   
{  
              
  // initialize with the I2C addr 0x3C
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);  

  // Clear the display.
  display.clearDisplay();

  // Display Text
  display.setTextSize(1); // size of text
  display.setTextColor(WHITE); // text color
  display.setCursor(0,28); // set the cursor
  display.println("Welcome to Robogenesis"); // text
  display.display(); // function for display
  delay(2000);
  display.clearDisplay(); // after display clear the text
}

 

Here no need for a void loop function, so only write it simply.

 

Final Code

 

#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

Adafruit_SSD1306 display(-1);

void setup()   
{                

  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);  


  display.clearDisplay();

 
  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0,28);
  display.println("Welcome to Robogenesis");
  display.display();
  delay(2000);
  display.clearDisplay();
}

void loop()
{

}