connecting nrf24lo1 with external antenna to arduino

Projects General Guidance
1

Hello, I bought some nrf24lo1s with external long-range antennas along with voltage regulator modules, (link) and I followed this tutorial(link) and connected the modules to my Arduino Uno and nano 33 as he did. My modules won't work, and on the serial monitor, it keeps printing backward question marks. I tried the following:

  • used other tutorials
  • bought new sensors
  • removed the antennas
  • change the spi pins

I might need to try using an external power source, but the voltage seems correct. Please reply as soon as possible as I need these to work in a competition, and thank you very much in advance. (the setup and codes are in the tutorial link)

2

Hello,
show your sketch.

3

Often the long range radios need to be several meters apart for them to communicate.

I found Robin2's simple rf24 tutorial very helpful.

Note his warning about using older code with the newest version of the rf24 library.

4

Make sure the baud rate set in Serial.begin() matches the baud rate set in your Serial monitor (on the right bottom corner). 115200 is a good value.

5

Also, in Robin2's tutorial there is a sketch to test the wired connection between the radio and its processor on the second page.

6

Hello, I tried Robin2's simple rf24 tutorial, and as expected it did not work, and when I went to reply #29 to test the connection, and I saw that my Arduino's weren't connecting to my nrf24l01+ modules. Any suggestions?
(If you want to know what modules I'm using, in my first reply, I posted a link.)

Again, thank you very much in advance!

7

Show a photo of your setup.

If you are using breadboard it may be the source of your probelm. (i.e. bad connections)

8

Hello, I did not use any breadboard and connected my wifi modules directly to my Arduino's, and in reply #5, I have a tutorial link that shows how I connected my modules to my Arduino's.

I forgot to mention that I am using an Arduino Uno and an Arduino nano 33 iot.

9

aakarsht:
reply #5, I have a tutorial link that shows how I connected my modules to my Arduino's.

I forgot to mention that I am using an Arduino Uno and an Arduino nano 33 iot.

What is best is to show is YOUR circuit that IS NOT working as opposed to someone's tutorial which apparently IS .

Noted some of your "alterations" in your first post.
Never run without an antenna load.

10

sorry if these pictures aren't as good, but to find where a wire connects to, look at all the images and focus on the wire color

By the way, this is an Arduino nano iot, I did the same circuit on my Arduino Uno, and I already tried using external power supplies(2 AA batteries)

I also got new ones, but I have the same problem

11

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