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

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

#define OLED_RESET -1

Adafruit_SSD1306 OLED(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

int var = 0;

void setup() {
  Serial.begin(115200);
  if(!OLED.begin(SSD1306_SWITCHCAPVCC, 0x3C))
  {
    Serial.println("SSD1306 allocation failed");
  }else{
    Serial.println("Arduino All OLED Work !!!");
  }
}
void loop() {

        OLED.clearDisplay();
        OLED.setTextColor(WHITE);
        OLED.setCursor(20, 0);
        OLED.setTextSize(2);
        OLED.println("OLED");

        OLED.setTextColor(WHITE);
        OLED.setCursor(18, 20);
        OLED.setTextSize(1);
        OLED.print("Welcome to ");
        OLED.println("RMUTI");

        OLED.setTextColor(WHITE);
        OLED.setCursor(70, 0);
        OLED.setTextSize(2);
        OLED.println(var, DEC);

        OLED.setCursor(18, 40);
        OLED.setTextSize(2);
        OLED.println("Apichai");

        OLED.display();
        var++;
        delay(500);
}