#include <U8g2lib.h>
#include <Wire.h>

U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ U8X8_PIN_NONE);

void setup(void) {
  u8g2.begin();
}

void loop(void) {
  u8g2.clearBuffer();

  // Display Hello World text
  u8g2.setFont(u8g2_font_ncenB10_tr);
  u8g2.drawStr(20, 20, "Hello World!");

  u8g2.drawTriangle(10, 40, 30, 40, 20, 20);

  u8g2.drawBox(40, 40, 20, 20);


  u8g2.drawCircle(80, 50, 10);

  u8g2.sendBuffer();
  delay(1000); 
}