nRF24L01 Insufficient Power Problems and Better Range DistanceBy Robolab Technologies In Arduino, Atal Tinkering Labs ATL, More Info
Many users have had trouble getting the nRF24L01 modules to work.
This module is unfortunately not perfect!
Interruption of Communicate
No communication at all
Many times the problem is that the 3.3V Power to the module does not have enough current capability, or current surges cause problems.
Solder a 3.3 uF to 10 uF capacitor directly on the module from VCC to Gnd.