Nano Brd v4 Demo

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

#define OLED_RESET 4

Adafruit_SSD1306 display(OLED_RESET);

void setup()   {
  Serial.begin(9600);

  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
  display.display();
  display.clearDisplay();
  pinMode(5,OUTPUT);
  pinMode(6,OUTPUT);
  pinMode(9,OUTPUT);
  pinMode(10,OUTPUT);
  pinMode(11,OUTPUT);
  pinMode(12,OUTPUT);
  pinMode(7,INPUT);
  pinMode(8,INPUT);





}


void loop() {




digitalWrite (5,LOW);
digitalWrite (6,LOW);
 int a = digitalRead(7);
  int b =  digitalRead(8);

  if (a == 0){ digitalWrite(5, HIGH); }
  if (b == 0){ digitalWrite(6, HIGH); }


  display.setTextSize(2);
  display.setTextColor(WHITE);
  {

      display.setCursor(0,0);
      display.println("Hello");
      display.println("Youtube");
      display.display();
      delay(500);
      display.clearDisplay();

   }

  digitalWrite(10,HIGH);
  delay(100);
  digitalWrite(10,LOW);
  delay(100);

  digitalWrite(11,HIGH);
  delay(100);
  digitalWrite(11,LOW);
  delay(100);

  digitalWrite(12,HIGH);
  delay(100);
  digitalWrite(12,LOW);
  delay(100);


}