   sevenseg.begin(i2c_addr); // initialize HT16K33 controller
 //  sevenseg.blinkRate(2); // set blink rate (0,1,2 or 3)
   sevenseg.clear(); // clear all digits on display
+  sevenseg.writeDisplay();
   delay(1000);
 }
 

  sevenseg.writeDisplay(); // push data to display
  delay(500);
  sevenseg.clear(); // clear display before writing raw digit
  // The clear command doesn't need a writeDisplay call afterwards
  
  // Example of writing a single digit to a specified position on the

    for (int i = 0; i < 5; i++) {
     if (i == 2) i++;  // This is needed to skip over position 2
     sevenseg.writeDigitRaw(i,128); // light the decimal at position i
     sevenseg.writeDisplay();  // push data to display
     delay(100);
     sevenseg.writeDigitRaw(i,0); // clear the decimal at position i
     sevenseg.writeDisplay(); // push data to display
    }
  }
  
