     static int phase = 0;
     static const uint8_t radio[8] = {0x3C, 0x5A, 0x99, 0x99, 0xFF, 0xE7, 0x42, 0x3C};
     static const uint8_t mask[8] =  {0x7C, 0xFE, 0x92, 0xFE, 0x7C, 0x38, 0x7C, 0x7C};
-    static const uint8_t skull[8] = {0x7C, 0xFE, 0xFE, 0x92, 0x92, 0x6C, 0x38, 0x38};
     
     phase = (phase + 1) % 64;
     if (phase < 32) {

//We always have to include the library
#include "LedControl.h"

#include "font.h"

static LedControl lc = LedControl(/*data*/ 11, /*clk*/ 13, /*cs*/ 10, /*#devices*/ 1);

#define GLYPH_WIDTH     6
#define GLYPH_HEIGHT    8

   we have to do a wakeup call
   */
  lc.shutdown(0,false);
  lc.shutdown(1,false);
  /* Set the brightness to a medium values */
  lc.setIntensity(0,15);
  lc.setIntensity(1,15);
  /* and clear the display */
  lc.clearDisplay(0);
  lc.clearDisplay(1);
  
  /* NRF init */
    Serial.begin(115200);
    rf.begin();
    rf.setRetries(15, 15);
    rf.enableDynamicPayloads();
    rf.openReadingPipe(0, address);
    rf.startListening();  
}

// reverses bit order in a byte
