Arduino Project
OLED
Course Introduction
In this lesson, we will learn how to use the OLED with Arduino.
Note
If this is your first time working with an Arduino project, we recommend downloading and reviewing the basic materials first.
1.1 Install Arduino IDE(Important)
1.2 Introduction of Arduino IDE
Wiring
Common Connections:
OLED Display Module
SDA: Connect to A4 on the Arduino.
SCK: Connect to A5 on the Arduino.
GND: Connect to GND on the Arduino.
VCC: Connect to 5V on the Arduino.
Writing the Code
Note
You can copy this code into Arduino IDE.
To install the library, use the Arduino Library Manager and search for Adafruit SSD1306 and Adafruit GFX and install it.
Don’t forget to select the board(Arduino UNO R4 Minima/WIFI) and the correct port before clicking the Upload button.
/*
This code initializes an OLED display (SSD1306) using the Adafruit SSD1306 library,
and displays various text, numbers, and scroll animations on the screen.
Board: Arduino Uno R3 (or R4)
Component: OLED (SSD1306)
Library: https://github.com/adafruit/Adafruit_SSD1306 (Adafruit SSD1306 by Adafruit)
https://github.com/adafruit/Adafruit-GFX-Library (Adafruit GFX Library by Adafruit)
*/
#include
#include
#include
#include
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
// Declaration for SSD1306 display connected using I2C
#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
//Bitmap data
static const unsigned char PROGMEM sunfounderIcon[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x7f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf0, 0x1f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x0f, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xc0, 0x07, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x80, 0x03, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0x00, 0x01, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x7f, 0xff, 0xff,
0xff, 0xff, 0xfc, 0x00, 0x00, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x1f, 0xff, 0xff,
0xff, 0xff, 0xf0, 0x00, 0x00, 0x0f, 0xff, 0xff, 0xff, 0xff, 0xe0, 0x01, 0x00, 0x07, 0xff, 0xff,
0xff, 0xff, 0xc0, 0x07, 0xc0, 0x01, 0xff, 0xff, 0xff, 0xff, 0x80, 0x0f, 0xe0, 0x00, 0xff, 0xff,
0xff, 0xff, 0x00, 0x1f, 0xf0, 0x00, 0x7f, 0xff, 0xff, 0xfe, 0x00, 0x3f, 0xf8, 0x00, 0x3f, 0xff,
0xff, 0xfc, 0x00, 0x7f, 0xfe, 0x00, 0x0f, 0xff, 0xff, 0xfc, 0x00, 0xfe, 0xff, 0x00, 0x07, 0xff,
0xff, 0xf8, 0x01, 0xfc, 0x7f, 0x80, 0x03, 0xff, 0xff, 0xf0, 0x03, 0xf8, 0x3f, 0xc0, 0x01, 0xff,
0xff, 0xe0, 0x07, 0xf0, 0x0f, 0xe0, 0x00, 0xff, 0xff, 0xc0, 0x0f, 0xe0, 0x07, 0xf8, 0x00, 0x3f,
0xff, 0x80, 0x0f, 0xc0, 0x03, 0xfc, 0x00, 0x7f, 0xff, 0x00, 0x1f, 0xc0, 0x01, 0xfe, 0x00, 0xff,
0xff, 0x00, 0x0f, 0xe0, 0x00, 0x7f, 0x81, 0xff, 0xff, 0x00, 0x0f, 0xf0, 0x00, 0x3f, 0xc3, 0xff,
0xff, 0x80, 0x03, 0xfc, 0x00, 0x1f, 0xe7, 0xff, 0xff, 0xc0, 0x01, 0xfe, 0x00, 0x0f, 0xff, 0xff,
0xff, 0xe0, 0x00, 0xff, 0x00, 0x03, 0xff, 0xff, 0xff, 0xf0, 0x00, 0x7f, 0x80, 0x01, 0xff, 0xff,
0xff, 0xf8, 0x00, 0x1f, 0xe0, 0x00, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x0f, 0xf0, 0x00, 0x7f, 0xff,
0xff, 0xff, 0x00, 0x07, 0xf8, 0x00, 0x3f, 0xff, 0xff, 0xff, 0x80, 0x03, 0xfc, 0x00, 0x0f, 0xff,
0xff, 0xff, 0xc0, 0x00, 0xff, 0x00, 0x07, 0xff, 0xff, 0xff, 0xe0, 0x00, 0x7f, 0x80, 0x03, 0xff,
0xff, 0xff, 0xf8, 0x00, 0x3f, 0xc0, 0x01, 0xff, 0xff, 0xf3, 0xfc, 0x00, 0x1f, 0xe0, 0x00, 0xff,
0xff, 0xe1, 0xfe, 0x00, 0x07, 0xf8, 0x00, 0x7f, 0xff, 0xc0, 0x7f, 0x00, 0x03, 0xf8, 0x00, 0x7f,
0xff, 0x80, 0x3f, 0xc0, 0x01, 0xfc, 0x00, 0xff, 0xff, 0x00, 0x1f, 0xe0, 0x03, 0xf8, 0x00, 0xff,
0xfe, 0x00, 0x0f, 0xf0, 0x03, 0xf0, 0x01, 0xff, 0xff, 0x80, 0x07, 0xf8, 0x07, 0xe0, 0x03, 0xff,
0xff, 0xc0, 0x01, 0xfc, 0x0f, 0xc0, 0x07, 0xff, 0xff, 0xe0, 0x00, 0xff, 0x1f, 0xc0, 0x0f, 0xff,
0xff, 0xf0, 0x00, 0x7f, 0xbf, 0x00, 0x1f, 0xff, 0xff, 0xf8, 0x00, 0x3f, 0xff, 0x00, 0x3f, 0xff,
0xff, 0xfe, 0x00, 0x0f, 0xfe, 0x00, 0x7f, 0xff, 0xff, 0xff, 0x00, 0x07, 0xfc, 0x00, 0xff, 0xff,
0xff, 0xff, 0x80, 0x03, 0xf8, 0x01, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x01, 0xf0, 0x03, 0xff, 0xff,
0xff, 0xff, 0xf0, 0x00, 0x00, 0x07, 0xff, 0xff, 0xff, 0xff, 0xf8, 0x00, 0x00, 0x0f, 0xff, 0xff,
0xff, 0xff, 0xfc, 0x00, 0x00, 0x0f, 0xff, 0xff, 0xff, 0xff, 0xfe, 0x00, 0x00, 0x1f, 0xff, 0xff,
0xff, 0xff, 0xff, 0x00, 0x00, 0x3f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc0, 0x00, 0x7f, 0xff, 0xff,
0xff, 0xff, 0xff, 0xe0, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0, 0x01, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xf8, 0x03, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0x07, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x0f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
void setup() {
Serial.begin(9600);
// initialize the OLED object
if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
Serial.println(F("SSD1306 allocation failed"));
for (;;)
;
}
// Clear the buffer.
display.clearDisplay();
// Display Text
display.setTextSize(1); // Set text size
display.setTextColor(WHITE); // Set text color
display.setCursor(0, 28); // Set cursor position
display.println("Hello world!");
display.display(); // Display the content on the screen
delay(2000);
display.clearDisplay(); // Clear the screen
// Display Inverted Text
display.setTextColor(BLACK, WHITE); // 'inverted' text
display.setCursor(0, 28);
display.println("Hello world!");
display.display();
delay(2000);
display.clearDisplay();
// Changing Font Size
display.setTextColor(WHITE);
display.setCursor(0, 24);
display.setTextSize(3);
display.println("Hello!");
display.display();
delay(2000);
display.clearDisplay();
// Display Numbers
display.setTextSize(2);
display.setCursor(0, 28);
display.println(123456789);
display.display();
delay(2000);
display.clearDisplay();
// Display ASCII Characters
display.setCursor(0, 24);
display.setTextSize(2);
for (int i = 1; i < 8; i++) {
display.write(i);
}
display.display();
delay(2000);
display.clearDisplay();
// Scroll full screen
display.setCursor(0, 0);
display.setTextSize(1);
display.println("Full");
display.println("screen");
display.println("scrolling!");
display.display();
display.startscrollright(0x00, 0x07); // Scroll the screen to the right
delay(5000);
display.stopscroll();
delay(500);
display.startscrollleft(0x00, 0x07); // Scroll the screen to the left
delay(5000);
display.stopscroll();
delay(500);
display.clearDisplay();
// Scroll part of the screen
display.setCursor(0, 0);
display.setTextSize(1);
display.println("Scroll");
display.println("some part");
display.println("of the screen.");
display.display();
display.startscrollright(0x00, 0x00); // Scroll the first column of the screen to the right
delay(6500);
display.stopscroll();
display.clearDisplay();
// Display bitmap
display.drawBitmap(32, 0, sunfounderIcon, 64, 64, WHITE);
display.display();
}
void loop() {
}