Arduino Lesson 8
Using the onboard OLED Screen
Display text, logos, and images on the OLED screen
Components Required
Buy
Introduction
Color OLED screen on Magicbit can display text as well as simple logos & images.
Learning Outcomes
From this example, you’ll get an understanding about,
- Using Adafruit OLED library
Theory
Magicbit has a 0.96” OLED screen which can be communicated with from the I2C protocol. The display has the address, 0x3c.
Methodology
Adafruit OLED library(Adafruit_SSD1306 & Adafruit_GFX) is used to handle the LCD, it’s important to install those libraries beforehand. First, we create the content we need to print onto the screen and then use display. Display command to update the screen.
Coding
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define OLED_RESET 4
Adafruit_SSD1306 display(128,64);
void setup(){
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display.display();
delay(3000);
}
void loop(){
display.clearDisplay();
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(10, 0);
display.println("Hello");
display.setTextColor(WHITE);
display.setTextSize(1);
display.setCursor(0, 25);
display.println("Welcome to");
display.println();
display.println("Magic");
display.println("Bit");
display.display();
display.clearDisplay();
delay(1000);
}
Explanation
display.clearDisplay(): Clears the OLED display.
display.setTextSize(2): Set the font size of the text.
display.setCursor(0, 25): Sets the cursor(determines where the next text will appear).
display.println(stuff to print): print the data given on a new line, similar effect like Serial.println.
display.setTextColor(WHITE): Sets the color of the text.
display.display(): Updates the changes to the screen.
Note:: Make a program to display the ADC value of the potentiometer on the OLED display.
