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

// Define the OLED display dimensions
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

// Create an object of the OLED display (using I2C)
// Using the I2C address 0x3C for the OLED display
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  // Initialize the OLED display with the correct I2C address (0x3C)
  if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    for (;;); // Hang here if initialization fails
  }

  display.display();  // Show initial display
  delay(2000);        // Wait for 2 seconds

  // Clear the display
  display.clearDisplay();

  // Set text size and color
  display.setTextSize(1);      
  display.setTextColor(SSD1306_WHITE);  
  display.setCursor(0, 0);     

  // Display "Hello World"
  display.print(F("Hello World!"));

  // Show the content
  display.display();
}

void loop() {
  // Nothing to do here, the message is displayed once
}