#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
Adafruit_SSD1306 display(128 , 64 , &Wire ,-1);
int scroll_left_button = 2;
int scroll_right_button = 4;
int move_up_button = 16;
int move_down_button = 17;
char text[100];
int text_x = 0; 
int text_y = 32;
void displaytext() {
  display.clearDisplay();
  display.setTextSize(3);
  display.setTextColor(WHITE);
  display.setCursor(text_x, text_y);
  display.println(text);
  display.display();
}
void setup() {
  display.begin(SSD1306_SWITCHCAPVCC,0x3C);
  Serial.begin(115200);
  pinMode(scroll_left_button, INPUT);
  pinMode(scroll_right_button, INPUT);
  pinMode(move_up_button, INPUT);
  pinMode(move_down_button, INPUT);
  Serial.print("Enter text: ");
  while (!Serial.available()) {
  }
  Serial.readBytesUntil('\n', text, sizeof(text));
  display.clearDisplay();
}
void loop() {
  displaytext();
  if (digitalRead(scroll_left_button) == HIGH) {
    text_x-=3;
    displaytext();
  } 
  else if (digitalRead(scroll_right_button) == HIGH) {
    text_x+=3;
    displaytext();
  } 
  else if (digitalRead(move_up_button) == HIGH) {
    text_y-=3;
    displaytext();
  } 
  else if (digitalRead(move_down_button) == HIGH) {
    text_y+=3;
    displaytext();
  }
  delay(50);
}