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

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -21
Adafruit_SSD1306 display(SCREEN_WIDTH,SCREEN_HEIGHT,&Wire,OLED_RESET );


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

if(!display.begin(SSD1306_SWITCHCAPVCC, 0X3C)){
  Serial.println(F("SSD1306 allocation failed"));
  
    }
  }

void loop(){
  for(int i=0; i<50; i++){
    display.clearDisplay();
    display.drawCircle(60, 30, 1+i, WHITE);
    display.display();
    delay(50);
  }
}