Hi
I am using arduino pro mini and nrf24lo1 to transfer hall sensor data.
on receiver side i am using nrf24lo1 +pa and connected to arduino pro mini 5v. it works well for some time later on i get some disturbance. then i tried to replace with arduino uno insted of arduino pro mini 5v. now looks everything is good.
I would like to know what wrong with arduino pro mini 5v + nrf24lo1 pa lna.
can anyone please help
First thing to look at would be power. Please provide a detailed schematic (photo of handdrawn is fine).
Your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advice on) your project 
See About the Installation & Troubleshooting category.
The nRF24L01 are designed to operate at a voltage range of 1.9 – 3.6V for power not 5V. This your lucky day you did not fry it. The logic pins are 5 volt tolerant, so you can use it with your favorite micro. Also Use a seperate power source most Arduinos do not have enough current from the 3V3 output to properly power them.
As you may have gathered, it is very important that you get the 3.3V supply to the radio modules to supply enough current. This is especially true for the high power (external antenna) modules. I use homemade adapters like these. They are powered by 5V and have a 3.3V regulator on the board. Robin2 also has suggested trying with a 2 AA cell battery pack.
If you read and, closely, follow Robin2's simple rf24 tutorial you should be able to get them working. That tutorial sure helped me. The code in the examples has been proven to work many many times. If it does not work for you, there is likely a hardware problem.
Run the CheckConnection.ino (look in reply #30 in the tutorial) to verify the physical wiring between the radio module and its processor (Arduino).
Yes
HI,
Can we please have a circuit diagram?
An image of a hand drawn schematic will be fine, include ALL power supplies, component names and pin labels.
Thanks.. Tom... 
Are you sure that it has a usb chip or are you thinking of a Nano?
Thanks for the heads up.
The dangers of posting before the morning coffee.
Post deleted.
i was powerd nrf from vcc pin of arduino pro mini 5v.
please suggest me for nrf24lo1 arduino uno or arduino pro mini is better? beacuse again from the io pin arduino i need to turn on 24v led light using mosfet and relay
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