Friday 5 August 2016

OLED - printing text to the screen

 OLEDs communicate with your Arduino via i2c.
Just 4 wires are needed.
 

Gnd
Vcc
Data connects to A4
Clock connects to A5 (Uno)
 
This is a basic start up splash screen.
There are 3 pages

Libraries Required :

  • Adafruit SSD1306
  • Adafruit GFX

The code:

// *****************

 // install these libraries
#include <Wire.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_GFX.h>

#define OLED_WIDTH 128
#define OLED_HEIGHT 64

#define OLED_ADDR   0x3C
// define the i2c address
// if you don't know the address, use a i2c scanner
// you can have over 100 devices connected

Adafruit_SSD1306 display(OLED_WIDTH, OLED_HEIGHT);

void setup() {
  display.begin(SSD1306_SWITCHCAPVCC, OLED_ADDR);
  // this begins the display
  display.clearDisplay();

  display.setTextSize(2); // range of 1 to 8
  display.setTextColor(WHITE);
  display.setCursor(0, 0); // first position on left
  display.println("Welcome");

  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(0, 17); // 17 positions dowm
  display.println("Page 1"); // just like a serial printer
  display.println("intro");
  display.println("display");

  display.display();
  //display function.
  // this is very impt .. it prints everything
  // from memory to the screen

  delay(5000);
}

void loop() {
  display.clearDisplay();

  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(0, 0);
  display.println("Jono");
 display.println("page 2");

  display.setTextSize(1);
  display.setTextColor(WHITE);
  display.setCursor(0, 35);
  display.println("jondent");
  display.println("Synth Blog");
  display.println("jondent808@gmail.com");
 
 

  display.display();
  delay(5000);

  display.clearDisplay();

  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(0, 0); // 0 = collumn, 0 = row
  display.println("Jon's test");
  display.println("page 3");

  display.display();
  delay(5000);
}

// ****************** 

 Links
Thanks to Eli for the inspiration and great tutorials.
 

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