     uSv = cpm / ratio ;
     Serial.println(uSv);
     counts = 0;
+    
+    // send over RF24
+    unsigned char buf[7];
+    buf[0] = 6;
+    buf[1] = 'G';
+    buf[2] = 'E';
+    buf[3] = 'I';
+    buf[4] = 'G';
+    buf[5] = (cpm >> 8) & 0xFF;
+    buf[6] = (cpm >> 0) & 0xFF;
+    rf.write(buf, sizeof(buf));
   }
   
-}+}
+

  Serial.begin(9600);
  attachInterrupt(0, tube_impulse, FALLING); //define external interrupts 
  
}

void loop(){                                 //main cycle

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

#include <RF24.h>
#include <nRF24L01.h>
#include <RF24_config.h>

#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

