 // debug via serial interface
 #define DEBUG
 // scan sensors (to inquire addresses)
-#undef SCAN_SENSORS
+#define SCAN_SENSORS
 // read temperature sensors
 #define READ_SENSORS
 // send the data via 433MHZ Tx

  Serial.println();    
}



  SEND_SYNC(2);
  
  gCycleCounter = ( gCycleCounter == 0x1ff ) ? 0 : (gCycleCounter+1);

#if 1
  // wait a bit, if too few sensors
