Arduino Nano & NRF24L01 & Ethernet Shield ENC28J60

Using Arduino Programming Questions
1

Hi everyone,
I just try to design my circuits with two SPI devices that are Ethernet Shield and Long Range Transreciever
These two modules communicates on SPI bus, now I made first connections for LORA NRF24L01 like this

Pin 9 - CE
Pin 10 - CS(N)
Pin 11 - MOSI
Pin 12 - MISO
Pin 13 - SCK
3.3v - VCC
GND - GND

now for my ethernet library; according to this website , my module is also Pin 10 to SS (Slave Select).

Then I understand that I cannot change SS pin of ethernet module, so should I change the LORA SS pin?

What is the SS pin of LORA module? I want to use like this :

Thanks a lot.

2

Then I understand that I cannot change SS pin of ethernet module, so should I change the LORA SS pin?

Yes.

What is the SS pin of LORA module?

You pick an Arduino pin to connect the LORA module to. This might be interesting - http://howtomechatronics.com/tutorials/arduino/arduino-wireless-communication-nrf24l01-tutorial/

3

You can use any I/O pin for SS. Each SPI device needs to be controlled by a different SS pin. The nRF24 module also needs a CE pin.

...R

4

Thanks for your answers, I'll do it
I have a last question, If you have ever used this LORA module, did you use any additional bypass capacitor btw GND & VCC ?
Some people say that If I use it in RF24_PA_MAX I should have to use.

5

An nRF24L01+ is NOT a LORA module. They are completely different things.

How are you powering your nRF24? The high-power modules with an external antenna probably need a separate 3.3v power supply.

...R
Simple nRF24L01+ Tutorial

6

Robin2:
An nRF24L01+ is NOT a LORA module. They are completely different things.

How are you powering your nRF24? The high-power modules with an external antenna probably need a separate 3.3v power supply.

...R
Simple nRF24L01+ Tutorial

In this link he said The nRF24 modules require a 3.3v power supply. Be careful NOT to connect the VCC pin to a 5v power supply. I have found that they work satisfactorily when connected to the 3.3v pin on my Unos.

I'm lucky :slight_smile:

7

boraciner:
I have found that they work satisfactorily when connected to the 3.3v pin on my Unos.

My low power nRF24L01+ modules (with the PCB antenna) work from the Uno's 3.3v pin. I suspect the high-power version with the external antenna will need more current than the Uno's 3.3v converter can provide. If you overload it it will fail sooner rather than later.

...R

8

Hi everyone,
I try to first connection btw my NRF24L01+PA+LNA modules but I'm about losing my mind pls help me I checked every single wire over and over again.

Thanks a lot ..
BC

My module :

1000×840 93.2 KB

my connection diagrams :

Server

Client

Server Code :

#include <string.h>
#include <SPI.h>
#include <nRF24L01.h>
#include <RF24.h>
RF24 radio(9, 10); // CE, CSN
const byte address[6] = "00001";

struct {
  int temp, hum, air;
  char sensorId;
}
dataReceived;

void setup()
{
  Serial.begin(9600);
  delay(2000);
  radio.begin();
  radio.openReadingPipe(0, address);
  radio.setPALevel(RF24_PA_MAX);
  radio.startListening();
}

void loop()
{
  if (radio.available()) 
  {
    radio.read(&dataReceived, sizeof(dataReceived));
    Serial.print("SENSOR ID: ");
    Serial.println((int)dataReceived.sensorId);
    Serial.print("Temperature: ");
    Serial.println(dataReceived.temp);
    Serial.print("Humidity: ");
    Serial.println(dataReceived.hum);
    Serial.print("Air Quality: ");
    Serial.println(dataReceived.air);
    Serial.println();
  }
}

Client Code :

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

//Client id must be different for every reporter!
#define CLIENT_ID 1

#define DHTPIN 3
#define DHTTYPE DHT22
const int gasPin = A0;
DHT dht(DHTPIN, DHTTYPE);
RF24 radio(9,10);
const byte address[6] = "00001";
struct {
  int temp, hum, air;
  char sensorId;
}
data;

float h,t;
int q;

void setup()
{
  Serial.begin(9600);
  dht.begin();
  delay(1000);
  h = dht.readHumidity();
  t = dht.readTemperature();  
  radio.begin();
  radio.openWritingPipe(address);
  radio.setPALevel(RF24_PA_MAX);
  radio.stopListening();
}

void loop()
{
  DelayMinute(2);
  SendData();
}

void DelayMinute(int mins)
{
 for(int y = 0 ; y < mins ; y++)
 {
  for (int i = 0 ; i < 60; i++)
  {
    delay(1000);
  }
 } 
}

void Measure()
{
  /*h = dht.readHumidity();
  t = dht.readTemperature();
  while (isnan(h) || isnan(t)){
    h = dht.readHumidity();
    t = dht.readTemperature();
  }
  q = analogRead(gasPin);*/
  h=50;t=51;q=52;
  data.temp = (int) t;
  data.air = (int)q;
  data.hum = (int) h;
}


void SendData()
{
 Measure();
 data.sensorId = CLIENT_ID;
 radio.powerUp();
 radio.write(&data,sizeof(data));
 radio.powerDown();
}
9

Hi,
Read this page about nRF24L01 problems:

http://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo

10

Your Server code

RF24 radio(9, 10); // CE, CSN

doesn't agree with the wiring you show.

11

Don't Double Post. I have suggested to the Moderator to merge this with your other Thread where you have already been receiving advice.

...R

12

Threads merged.

13