NRF24L01+PA+LNA with arduino pro mini not working

Projects Networking, Protocols, and Devices
1

I use NRF24L01+PA+LNA with arduino pro mini 5v

For powering NRF24L01+PA+LNA I use this power adapter board and I connected it to 5v adaptor (not powering with pro mini board ,I United the grounds of arduino and nrf )

To wiring it :

NRF power adpater pin pro mini pin

CE 8
CSN 10
SCK 13
MOSI 12
MISO 11

I test it with this testing_script.ino

And I don't see any output, I also connected the CE to pin 9 but it didn't change, should I use the 220 uf capacitor too? Where is the problem?

2

Have a look at this Simple nRF24L01+ Tutorial.

Wireless problems can be very difficult to debug so get the wireless part working on its own before you start adding any other features.

The examples are as simple as I could make them and they have worked for other Forum members. If you get stuck it will be easier to help with code that I am familiar with. Start by getting the first example to work

There is also a connection test program to check that the Arduino can talk to the nRF24 it is connected to.

A common problem with nRF24 modules is insufficient 3.3v current from the Arduino 3.3v pin. The high-power nRF24s (with the external antenna) will definitely need an external power supply. At least for testing try powering the nRF24 with a pair of AA alkaline cells (3v) with the battery GND connected to the Arduino GND.

I don't have any personal experience with the high-power nRF24 modules (with the external antenna). It may be that the power adapter cannot provide enough current. Try testing with the pair of alkaline cells. Also I believe that you need a considerable distance between the high-power modules so that they don't overwhelm the receiver. I suggest keeping them at least 3 metres apart.

...R

3

I connected both pro mini and NRF module to one 5V 1A adapter ,it can provide enough current?

And also For powering NRF24L01+PA+LNA I use this power adapter board ,should I use the 220 uf capacitor too?

All GND connected to the Arduino GND.

Arduino pro mini CE pin is 8 or 9?

4

isan:
I connected both pro mini and NRF module to one 5V 1A adapter ,it can provide enough current?

I suspect that would be plenty.

And also For powering NRF24L01+PA+LNA I use this power adapter board ,should I use the 220 uf capacitor too?

It won't do any harm and it will probably help.

Arduino pro mini CE pin is 8 or 9?

You can use either - just make sure the program matches the pins you are using.

If you are using my Tutorial examples then it is easiest if you start with the examples exactly as I have posted them.

...R