   // Create send string
   sprintf(sendData, "%i|t:%s%s,p:%s,h:%s,bv:%s", deviceNumber, temperatureNegativeString, temperatureString, pressureString, humidityString, batteryVoltageString);
 
+  // Wake up
+  radio.powerUp();
+  
   // Send data string
   bool sendOk = radio.write(&sendData, strlen(sendData));
   if(debug) {

}

void loop() {
  // Wake up
  radio.powerUp();

  // Init vars
  char temperatureString[8] = "";
  char* temperatureNegativeString = "";

#include <sdelay.h>
#include <math.h>

const int deviceNumber = 1;             // info about device number
const unsigned long sleepTime = 300000; // sleep time - 5 min
const bool debug = false;               // enable/disable debug mode
const uint64_t pipe = 0xF0A1B2C3D1LL;   // pipe number for transmitter

// NRF24 init
#include <RF24.h>
