Display Images on OLED SSD1306 – Atmega328p

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Display-Images-on-OLED-SSD1306-Atmega328p
Contents hide
1 Hardware Required
2 OLED Display Circuit
3 Get Image Code
4 OLED Display Code

Hi guys, in this tutorial I will be teaching you how to display any image on an OLED SSD1306 display using an Atmega328p Chip. I know that this topic is quite addressed on the internet but still when I tried it myself, I found it very tough to display an image as there are some important points and some common problems that are often overlooked by content creators. I will address all such issues here. So, let’s get started. 

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Hardware Required

You will require the following hardware to Display an Image on OLED.

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1.ArduinoUno1
2.Breadboard–1
3.OLED Display0.96″1
4.Jumper Wires––

OLED Display Circuit

Now, we need to build the circuit required to power up the OLED display and get it running, and honestly, the circuit is very simple and has just 4 connections.

Connections:

  • Arduino A4 – OLED SDA
  • Arduino A5 – OLED SCL
  • Arduino +5V – OLED VCC
  • Arduino GND – OLED GND

These are all the connections you need to perform. If you are done with these, move on to the next step!

Get Image Code

Now, you need to select the image that will be displayed on the OLED display. You can select any image until it doesn’t have too many details and is of a good resolution. Also, make sure that the image is not unreadable without its colors because our OLED display doesn’t have many colors.

I have chosen the Circuits DIY Logo as my test image today, as it would very well represent this platform and also look pretty cute on the OLED display 😆😆

Choose whatever image you wish to choose and just move on!

Now, you need to convert your image into a form that the Arduino board can interpret. There are many websites and software available out there that help with this. I used this website to convert my image to a bitmap code.

Remember, that you need to replace the bitmap code in mine with the one you get from the website above

OLED Display Code

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

#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels

#define OLED_RESET 4
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

#define LOGO_HEIGHT   64
#define LOGO_WIDTH    128

//image bitmap data 
const unsigned char logo_bmp [] PROGMEM = {
// 'Circuits-DIY-Fevicon', 128x64px
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x03, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xfc, 0x00, 0x00, 0x00, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x00, 0x00, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0xff, 0xff, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xfe, 0x00, 0x0f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xfc, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf8, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf0, 0x03, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xe0, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xc0, 0x0f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xc0, 0x1f, 0xff, 0xe0, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xc0, 0x1f, 0xff, 0x80, 0x00, 0x00, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x80, 0x1f, 0xff, 0x00, 0x00, 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x80, 0x1f, 0xff, 0x00, 0x00, 0x00, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x80, 0x1f, 0xff, 0x00, 0x01, 0xff, 0x80, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xc0, 0x1f, 0xff, 0x80, 0x07, 0xff, 0xfc, 0x00, 0x3f, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xc0, 0x0f, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0x00, 0x0f, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xe0, 0x07, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0xc0, 0x07, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xe0, 0x03, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0xf0, 0x03, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf0, 0x01, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0xf8, 0x01, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf8, 0x00, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0xfc, 0x00, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xfc, 0x00, 0x1f, 0xf0, 0x1f, 0xff, 0xff, 0xfe, 0x00, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xfe, 0x00, 0x01, 0xf0, 0x1f, 0x07, 0xff, 0xfe, 0x00, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x00, 0x00, 0x07, 0xff, 0xfe, 0x00, 0x7f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x07, 0xff, 0xfe, 0x00, 0x7f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x0f, 0xff, 0xfe, 0x00, 0x7f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x07, 0xff, 0xff, 0xfe, 0x00, 0x7f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0xfc, 0x00, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0xfc, 0x00, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0xf8, 0x01, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0xe0, 0x03, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0xc0, 0x07, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x07, 0xff, 0xff, 0x00, 0x0f, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x03, 0xff, 0xf0, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x03, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x00, 0x00, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x8e, 0xfa, 0x73, 0xce, 0xe7, 0x9f, 0xf3, 0xc7, 0x7f, 0x39, 0xff, 0x33, 0xff, 0xff,
0xff, 0xff, 0x3f, 0xe6, 0x79, 0x9f, 0xe7, 0x9d, 0xf3, 0xe1, 0xff, 0x3c, 0xef, 0x87, 0xff, 0xff,
0xff, 0xff, 0x9f, 0xfe, 0x27, 0x9f, 0xe7, 0x9d, 0xf3, 0xfe, 0x7f, 0x3c, 0xef, 0xcf, 0xff, 0xff,
0xff, 0xff, 0xc0, 0xfe, 0x73, 0xe0, 0xf0, 0x3d, 0xf3, 0xc0, 0x7f, 0x03, 0xff, 0xcf, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0x85, 0xeb, 0x5f, 0xed, 0x6e, 0xb7, 0xd8, 0xff, 0xdf, 0xde, 0xe5, 0x6f, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
};

void setup() {
  Serial.begin(9600);

  // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
  if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
    Serial.println(F("SSD1306 allocation failed"));
    for(;;); // Don't proceed, loop forever
  }

  testdrawbitmap();    // Draw the required image 
}

void loop() {
}

void testdrawbitmap(void) {
  display.clearDisplay();

  display.drawBitmap(
    (display.width()  - LOGO_WIDTH ) / 2,
    (display.height() - LOGO_HEIGHT) / 2,
    logo_bmp, LOGO_WIDTH, LOGO_HEIGHT, 1);
  display.display();
  delay(1000);
}

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