#include <OLED_I2C.h>

#define WIDTH 128
#define HEIGHT 44

OLED  myOLED(A4, A5, A4);

byte pixel[704];

void setup() {

  myOLED.begin();

  for (int i = 0; i < (WIDTH * HEIGHT) / sizeof(byte); i++) {

    pixel[i] = random(0,256);

  }
}

void loop() {

  myOLED.clrScr();

  for (int i = 0; i < WIDTH * HEIGHT; i++) {

    if (  ( pixel[ (int)floor(i / 8) ] ) & ( 128 >> (i % 8 ) ) )  {
       myOLED.setPixel(i % WIDTH, (int)floor(i / WIDTH) );
    }
  }

  myOLED.update();
  delay(500);