Robin2:
Post the program with that change....R
If I add a delay of for example 1 millisecond, the "0" disappears in the Serial Monitor.
But I don't understand why there is a delay needed...
void loop(void){
//check if data available
if (radio.available()){
//read data from nrf24l01 buffer
radio.read(&rxTxData, sizeof(long));
Serial.println(rxTxData);
}
delay(1);
}