text: #include <Arduino.h>
  #include "flipDot34GFX.h"
  
  
  FlipDot34GFX display(28, 19, 1, StackMode::kStacked);
  
  void setup() {
    // 2 columns of matrices, each 28x19 dots
    Serial.begin(115200);
    display.setRotation(3);
  
    display.startWrite();
    display.fillScreen(0); 
    display.endWrite();
  }
  
  int color = 1;
  
  void loop() {
    for (int y = 0; y < display.height(); y++) {
      for (int x = 0; x < display.width(); x++) {
        display.startWrite();
        display.drawPixel(x, y, color);
        display.endWrite();
        delay(5);
      }
    }
    delay(3000);
    color = 1 - color;
  }
  