 unsigned long previousMillis;  //variable for time measurement
 float uSv;            // the measured microSiverts
 float ratio = 151.0; // the divide the cpm by ration to get uSv
+
+static RF24 rf(/*ce*/ 8, /*cs*/ 10);
+static long int address = 0x66996699L;  // So that's 0x0066996699
 
 void tube_impulse(){       //subprocedure for capturing events from Geiger Kit
   counts++;

* USB cable to the computer and upload this sketch. 
*/


#include <SPI.h>
#define LOG_PERIOD 15000  //Logging period in milliseconds, recommended value 15000-60000.
#define MAX_PERIOD 60000  //Maximum logging period without modifying this sketch


  Serial.begin(9600);
  attachInterrupt(0, tube_impulse, FALLING); //define external interrupts 
  
  // init RF24
  rf.begin();
  rf.setRetries(15, 15);
  rf.enableDynamicPayloads();
  rf.openWritingPipe(address);
}

void loop(){                                 //main cycle
