Using my NRF24 module!

[arduinonebwie]

Hi

I am using a NRF24 module and I want it to transmit some data like "Hello World" and other messages like that. But it doesn't seem to work. I attached the nrf24 to 2 arduino (mega, adafruit Metro/Uno). But the message doesn't seem to go through. Then I tried running Robins Test run and I found out that the Nrf24 transmitting module does work and the Nrf24 module on the receiver end works too. So I think there is a problem with the code. So do you know what is wrong with the code. i am going to link both the transmitter and receiver down below.

Transmitter code

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

RF24 radio(7, 8); // CE, CSN

const byte address[6] = "00001";

void setup() {
radio.begin();
radio.openWritingPipe(address);
radio.setPALevel(RF24_PA_MIN);
radio.stopListening();
}

void loop() {
const char text[] = "Hello World";
radio.write(&text, sizeof(text));
delay(1000);
}

Receiver Code

#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>

RF24 radio(7, 8); // CE, CSN

const byte address[6] = "00001";

void setup() {
Serial.begin(9600);
radio.begin();
radio.openReadingPipe(0, address);
radio.setPALevel(RF24_PA_MIN);
radio.startListening();
}

void loop() {
if (radio.available()) {
char text[32] = "";
radio.read(&text, sizeof(text));
Serial.println(text);
}
}

<small>Code language: Arduino (arduino)</small>

[StefanL38]

Two things:

1.) RE-Edit your first posting that your code is presented as a code-section

Make experienced users help: two ways to quickly post code as a code-section

Hi newcomer, This thread wants to show you how you can speed-up getting helpful answers with small effort. If you manage at least to post this way. You have the sympathy of the experienced users. If you are willing to invest another 20 minutes these 20 minutes extra-time will save you a minimum of 200 minutes to finish your project. always post your full sketch. As a code-section from the very first to the very last line A code-section has a small height => keeps your posting "short" but e…

2. read this nrf24 tutorial

Simple nRF24L01+ 2.4GHz transceiver demo

Introduction The nRF24L01+ 2.4GHz transceiver modules are cheap and very effective but I have come across a few Threads in which people were having trouble with them so I thought it might be useful to gather together in one place a basic step-by-step sequence for getting them to work. EDIT 03 Feb 2021 - For this Tutorial install Version 1.1.7 of the RF24 library (available with the Arduino Library Manager). More information in Reply #30. Edit 29 Aug 2016. I have today downloaded and successfu…

best regards Stefan

[gilshultz]

I will take a SWAG and say it sounds like a power supply problem to me. I would guess the Arduino not an external power supply powers the nRF24L01. A Power Supply the Arduino is NOT!

[groundFungus]

I tried your code the 2 Unos with rf24 radio modules attached that I use for development. The code works fine.

@arduinonebwie

Then I tried running Robins Test run

Is that the connection diagnostic sketch, CheckConnection.ino?

Can you post clear photos of your wiring and a schematic.

Make sure the rf24 power supply can provide 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 using the high powered radios make sure to separate them by a few meters. They may not work too close together. Try the lower power settings.

Reset the radios by cycling power to them after uploading new code. I have found that to help. They do not reset with the Arduino.

[arduinonebwie]

I tried this but it didn't work

[arduinonebwie]

@groundFungus

I tried doing what you suggested but nothing seems to work.

[arduinonebwie]

I don't have my nrf24 modules with me right now but I will send a pic when i get them

[arduinonebwie]

hi I finally got my nrf24 to work all you need to do was to push the SPI Pins down.