Nrf24l01 arduino doesnt work

[freakwave293820398]

Hello, i try to send some data from one arduino to another.
But it doesnt work.

my configuration is,
vcc = 3,3V
gnd = gnd
ce = Pin 7
csn = Pin 8
sck = Pin 52
mosi = Pin 51
miso = Pin 50
IRQ = isnt connected

Here is my "send sketch"

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

RF24 radio(53,8); // CNS, CE
const byte adress[6] = "00001";

void setup() {
Serial.begin(9600);
radio.begin();
radio.openWritingPipe(adress);
radio.setPALevel(RF24_PA_MIN);
radio.stopListening();

}

void loop() {
const char text[] = "Es hat geklappt";
radio.startWrite(&text,sizeof(text),false);
radio.write(&text,sizeof(text));
delay(1000);

}

and here is my receive sketch

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

RF24 radio(53,8); //CE, CSN
const byte adress[6] = "00001";

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

}

void loop() {

char text[32] = {0};

if(radio.available())
{

radio.read(&text,sizeof(text));
Serial.print(" ");
Serial.println(text);    

}
else
{
Serial.print("Fehler");
}
}

the wiring is identical on each arduino

thanks for help!

[srnet]

Suggest you follow this 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…

The 3.3V supply output on the Mega is unlikly to be able to supply enough current to run the nrf24l01 transmitters, you need to arrange a seperate 3.3V supply.

[6v6gt]

@freakwave293820398

my configuration is,
vcc = 3,3V
gnd = gnd
ce = Pin 7
csn = Pin 8
sck = Pin 52
mosi = Pin 51
miso = Pin 50
IRQ = isnt connected

Here is my "send sketch"

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

RF24 radio(53,8); // CNS, CE

This looks odd for a start: RF24 radio(53,8); // CNS, CE

[freakwave293820398]

@6v6gt

‎Das sieht für den Anfang seltsam aus‎

i searched for so long and used every difference i got from the internet. But in the skech i use i changed it to RF24 radio(7,8)

[srnet]

@freakwave293820398

But in the skech i use i changed it to RF24 radio(7,8)

Best to post the actual sketch you used that failed.

[freakwave293820398]

this is the updated sketch to send

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

RF24 radio(7,8); // CNS, CE
const byte adress[6] = "00001";

void setup() {
Serial.begin(9600);
radio.begin();
radio.openWritingPipe(adress);
radio.setPALevel(RF24_PA_MIN);
radio.stopListening();

}

void loop() {
const char text[] = "Es hat geklappt";
radio.startWrite(&text,sizeof(text),false);
radio.write(&text,sizeof(text));
delay(1000);

}

[freakwave293820398]

and this to receive

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

RF24 radio(7,8); //CE, CSN
const byte adress[6] = "00001";

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

}

void loop() {

char text[32] = {0};

if(radio.available())
{

radio.read(&text,sizeof(text));
Serial.print(" ");
Serial.println(text);    

}
else
{
Serial.print("Fehler");
}
}

[Whandall]

@freakwave293820398

if(radio.available())
{
radio.read(&text,sizeof(text));
Serial.print(" ");
Serial.println(text);    
}
else
{
Serial.print("Fehler");
}

That is a bad idea.
99.999999% of the time there will be no packet available,
combined with the 9600 baud, it will nearly halt your sketch blocking on Serial.

The 3.3V of a normal Mega is not sufficient for a NRF24L01+, I second that.
Making pin 53 an output, could help the SPI library play its master role.

[freakwave293820398]

but in my updated code in dont use the pin 53

[freakwave293820398]

and i also tried to use a external voltage source to get a higher current but i dont think that was the solution

[Whandall]

@freakwave293820398

but in my updated code in dont use the pin 53

I see no "but" there, that could be the reason for a malfunctioning Mega.

@freakwave293820398

and i also tried to use a external voltage source to get a higher current but i dont think that was the solution

If you knew the problem, there would be no reason to ask for help here, would it?

[freakwave293820398]

okay can you explain me how do you mean that with the pin 53? Because i´m new to this topic.
Would be great

[Whandall]

Add
pinMode(53, OUTPUT);
to setup.

I'm really sorry that your Google is broken.

[freakwave293820398]

@Whandall

pinMode(53, OUTPUT);

at which sketch? for the transmit or the recv.?
And why the pin 53? because from my first sketch to my actual sketch i changed the 53 to 7

[Whandall]

@freakwave293820398

at which sketch?

Any that uses a Mega and a NRF24L01.

@freakwave293820398

And why the pin 53?

Note about Slave Select (SS) pin on AVR based boards

All AVR based boards have an SS pin that is useful when they act as a slave controlled by an external master. Since this library supports only master mode, this pin should be set always as OUTPUT otherwise the SPI interface could be put automatically into slave mode by hardware, rendering the library inoperative.

It is, however, possible to use any pin as the Slave Select (SS) for the devices. For example, the Arduino Ethernet shield uses pin 4 to control the SPI connection to the on-board SD card, and pin 10 to control the connection to the Ethernet controller.

SPI - Arduino Reference

[freakwave293820398]

So I tried changing the skript and pins like u said. Unfortunately nothing happened.

[Whandall]

@freakwave293820398

So I tried changing the skript and pins

But you failed to post the new sketches (and new connections?).

You did run the connection test sketch from Robin2's tutorial to make sure you can communicate?

If not, it's time to. (You will have to adapt it to match your hardware connections).

Simple nRF24L01+ 2.4GHz transceiver demo

There have been several Threads in which people have reported problems with the SimpleRX program repeatedly printing Data Received very quickly even though it is obvious that data is not being received. When the communication is working properly messages should only be printed once per second. As far as I can see the problem is caused by a poor connection between the Arduino and the nRF24 module. I can reproduce the symptom by disconnecting the CSN_PIN connection. The following program may hel…

A small capacitor (1 to 10 uF) directly on the module power pins
sometimes helps the modules work in case of a marginal power supply.

[freakwave293820398]

here is the receive sketch

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

RF24 radio(53,8); //CE, CSN
const byte adress[6] = "00001";

void setup() {
pinMode(53, OUTPUT);
Serial.begin(9600);
radio.begin();
radio.openReadingPipe(0,adress);
radio.setPALevel(RF24_PA_MIN);
radio.startListening();

}

void loop() {

char text[32] = {0};

if(radio.available())
{

radio.read(&text,sizeof(text));
Serial.print(" ");
Serial.println(text);    

}
else
{
Serial.print("Fehler");
}
}

and here the transmit

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

RF24 radio(53,8); // CNS, CE
const byte adress[6] = "00001";

void setup() {
pinMode(53, OUTPUT);
Serial.begin(9600);
radio.begin();
radio.openWritingPipe(adress);
radio.setPALevel(RF24_PA_MIN);
radio.stopListening();

}

void loop() {

if(radio.available()){

const char text[] = "Es hat geklappt";
radio.startWrite(&text,sizeof(text),false);
radio.write(&text,sizeof(text));

}

}

[Whandall]

Change that post, so the code is in code tags.

How to get the best out of this forum

See also FAQ - Arduino Forum for general rules on forum behaviour and etiquette. Hello, Welcome to the Arduino Forum. This guide explains how to get the best out of this forum. Please read and follow the instructions below. Being new here you might think this is having rules for the sake of rules, but that is not the case. If you don’t follow the guidelines all that happens is there is a long exchange of posts while we try to get you to tell us what we need in order to help you, which is fru…

[freakwave293820398]

this is the output of the "checkconnection.ino"