Arduino Code:

• Scan the QR to open the code. Copy the code and paste it in your Arduino IDE.
• Once you paste the code in Arduino IDE, Compile the code and upload it in the Arduino Nano.

Code:

#include <SoftwareSerial.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
 
#define SCREEN_WIDTH 128    // OLED display width, in pixels
#define SCREEN_HEIGHT 64    // OLED display height, in pixels
#define OLED_RESET -1       // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

SoftwareSerial mySerial (10,9);   //(RX, TX);


String val = "No Data"; 
String oldval;
String newval = "No Data";
int i = 0;

void setup() 
{
  // put your setup code here, to run once:
  mySerial.begin(9600);
  Serial.begin(9600);         

 display.begin(SSD1306_SWITCHCAPVCC, 0x3C); //initialize with the I2C addr 0x3C (128x64)
  delay(2000);

//Printing the Name "NOTICE BOARD" on OLED
  display.clearDisplay(); 
  display.setTextSize(2);
  display.setTextColor(WHITE);
  display.setCursor(20, 20);
  display.print("Notice");
  display.setCursor(20, 40);
  display.print("Board");
  display.display();
  delay(3000);
}