Using Two Nordic nRF24L01 2.4 Wireless Radio with Joystick and Arduino

We will going to demonstrate here how to use Nordic nRF24L01 2.4 Wireless Radio using Arduino with Joystick Controller. This 2.4Ghz Radio module are base on Nordic Semiconductor nRF24L01+ Chip,

The Nordic nRF24L01+ integrates a complete 2.4GHz Radio Frequency Transceiver, Radio Frequency Synthesizer, and Baseband Logic including the Enhance ShockBurst hardware protocol accelerating a high speed SPI interface for the application controller and low -power short-range transceiver and it has a built in on-board antenna other model it has SMA integrated antenna with a range up to 1100 Meter.

Features:

2 ore more Arduino’s be able to communicate wirelessly over a distance.
Controlling a nearby buildings
Controlling Autonomous vehicles of all kinds
Excellent for a remote sensors for temperature, pressure, distance, switching, alarm and more.
Controlling and monitoring a robot a range up to 2000 feet distance

We will going to transmits a communication between to Arduinos over NRF24L01 using Joystick

Note: Problem accure when operation because of electrical noise on 3.3v supply, specially when using Arduino Mega and Nano we need to add bypass capacitor across ground and vcc on the module. please see the schematics below.

Pin Out Connection to the Arduino by Library

Signal	RF Module	Arduino pin for / RF24	Arduino pin for Mirf	MEGA2560 pin / RF24	Arduino UNO Pin for RH_NRF24 RadioHead	MEGA2560 Pin for RH_NRF24 RadioHead
GND	1	GND *	GND	GND *	GND *	GND *
VCC	2	3.3V *	3.3V	3.3V *	3.3V *	3.3V *
CE	3	Pin 9	Pin 8	Pin 9	Pin 8	Pin 8
CSN	4	Pin 10	Pin 7	Pin 53	Pin 10	Pin 53
SCK	5	Pin 13	Pin 13	Pin 52	Pin 13	Pin 52
MOSI	6	Pin 11	Pin 11	Pin 51	Pin 11	Pin 51
MISO	7	Pin 12	Pin 12	Pin 50	Pin 12	Pin 50
IRQ	8	Pin 2 *		per library	N/C	N/C

Get the Code Libraries from ManiacBug NRF24L01 Libraries import to your Arduino Libraries

nRF24L01 TX – Transmitter Sketch.

/* Example: nRF24L01 */

   1 - GND 
   2 - VCC 3.3V /* WARNING SHOULD BE 3.3v Not 5V */
   3 - CE - Arduino pin 9
   4 - CSN - Arduino pin 10
   5 - SCK - Arduino pin 13
   6 - MOSI - Arduino pin 11
   7 - MISO - Arduino pin 12
   8 - UNUSED 

 /* You can used an Analog Joystick or 2 10K potentiometers */

   GND - Arduino GND 
   VCC - Arduino +5V
   X Pot - Arduino A0
   Y Pot - Arduino A1

/*----- Import all required Libraries -----*/

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

/*----- Declare all constant pin to be used ----*/

#define CE_PIN   9
#define CSN_PIN 10
#define JOYSTICK_X A0
#define JOYSTICK_Y A1


const uint64_t pipe = 0xE8E8F0F0E1LL; // This is the transmit pipe to communicate the two module


/*-----Object Declaration ----*/

RF24 radio(CE_PIN, CSN_PIN); // Activate  the Radio

/*-----Declaration of Variables -----*/

int joystick[2];  // Two element array holding the Joystick readings

void setup()   
{
  Serial.begin(9600); /* Opening the Serial Communication */
  radio.begin();
  radio.openWritingPipe(pipe);
}//--(end setup )---


void loop()   /* Runs Continuously */
{
  joystick[0] = analogRead(JOYSTICK_X); /* Reading Analog X
  joystick[1] = analogRead(JOYSTICK_Y); /* Reading Analog Y
  
  radio.write( joystick, sizeof(joystick) );

}//--(end main loop )---

/* Example: nRF24L01 */

1 - GND

2 - VCC 3.3V /* WARNING SHOULD BE 3.3v Not 5V */

3 - CE - Arduino pin 9

4 - CSN - Arduino pin 10

5 - SCK - Arduino pin 13

6 - MOSI - Arduino pin 11

7 - MISO - Arduino pin 12

8 - UNUSED

/* You can used an Analog Joystick or 2 10K potentiometers */

GND - Arduino GND

VCC - Arduino +5V

X Pot - Arduino A0

Y Pot - Arduino A1

/*----- Import all required Libraries -----*/

#include <SPI.h>

#include <nRF24L01.h>

#include <RF24.h>

/*----- Declare all constant pin to be used ----*/

#define CE_PIN 9

#define CSN_PIN 10

#define JOYSTICK_X A0

#define JOYSTICK_Y A1

const uint64_t pipe = 0xE8E8F0F0E1LL; // This is the transmit pipe to communicate the two module

/*-----Object Declaration ----*/

RF24 radio(CE_PIN, CSN_PIN); // Activate the Radio

/*-----Declaration of Variables -----*/

int joystick[2]; // Two element array holding the Joystick readings

void setup()

{

Serial.begin(9600); /* Opening the Serial Communication */

radio.begin();

radio.openWritingPipe(pipe);

}//--(end setup )---

void loop() /* Runs Continuously */

{

joystick[0] = analogRead(JOYSTICK_X); /* Reading Analog X

joystick[1] = analogRead(JOYSTICK_Y); /* Reading Analog Y

radio.write( joystick, sizeof(joystick) );

}//--(end main loop )---

nRF24L01 RX – Receiver Sketch.

/* Testing nRF24L01 Receive Joystick values to NRF24l01 Module
  
   1 - GND 
   2 - VCC 3.3V /* WARNING SHOULD BE 3.3v Not 5V */
   3 - CE - Arduino pin 9
   4 - CSN - Arduino pin 10
   5 - SCK - Arduino pin 13
   6 - MOSI - Arduino pin 11
   7 - MISO - Arduino pin 12
   8 - UNUSED 

/*----- Import all required Libraries -----*/

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

/*----- Declare all constant pin to be used ----*/

#define CE_PIN   9
#define CSN_PIN 10

const uint64_t pipe = 0xE8E8F0F0E1LL; // This is the transmit pipe to communicate the two module


/*-----Object Declaration ----*/

RF24 radio(CE_PIN, CSN_PIN); // Activate the Radio

/*-----Declaration of Variables -----*/

int joystick[2];  //  Two element array holding the Joystick readings

void setup()  
{
  Serial.begin(9600); /* Opening the Serial Communication */
  delay(1000);
  Serial.println("Nrf24L01 Receiver Starting");
  radio.begin();
  radio.openReadingPipe(1,pipe);
  radio.startListening();;
}//--(end setup )---


void loop()   
{
  if ( radio.available() )
  {
    // Reading the data payload until the RX received everything
    bool done = false;
    while (!done)
    {
      // Fetching the data payload
      done = radio.read( joystick, sizeof(joystick) );
      Serial.print("X = ");
      Serial.print(joystick[0]);
      Serial.print(" Y = ");      
      Serial.println(joystick[1]);
    }
  }
  else
  {    
      Serial.println("No radio available");
  }

}

/* Testing nRF24L01 Receive Joystick values to NRF24l01 Module

1 - GND

2 - VCC 3.3V /* WARNING SHOULD BE 3.3v Not 5V */

3 - CE - Arduino pin 9

4 - CSN - Arduino pin 10

5 - SCK - Arduino pin 13

6 - MOSI - Arduino pin 11

7 - MISO - Arduino pin 12

8 - UNUSED

/*----- Import all required Libraries -----*/

#include <SPI.h>

#include <nRF24L01.h>

#include <RF24.h>

/*----- Declare all constant pin to be used ----*/

#define CE_PIN 9

#define CSN_PIN 10

const uint64_t pipe = 0xE8E8F0F0E1LL; // This is the transmit pipe to communicate the two module

/*-----Object Declaration ----*/

RF24 radio(CE_PIN, CSN_PIN); // Activate the Radio

/*-----Declaration of Variables -----*/

int joystick[2]; // Two element array holding the Joystick readings

void setup()

{

Serial.begin(9600); /* Opening the Serial Communication */

delay(1000);

Serial.println("Nrf24L01 Receiver Starting");

radio.begin();

radio.openReadingPipe(1,pipe);

radio.startListening();;

}//--(end setup )---

void loop()

{

if ( radio.available() )

{

// Reading the data payload until the RX received everything

bool done = false;

while (!done)

{

// Fetching the data payload

done = radio.read( joystick, sizeof(joystick) );

Serial.print("X = ");

Serial.print(joystick[0]);

Serial.print(" Y = ");

Serial.println(joystick[1]);

}

else

{

Serial.println("No radio available");

}

Note: you need to check the voltage 3.3v power supply, it will distract the operation due to power regulation issues, the average current may be less 15ma.

Using Two Nordic nRF24L01 2.4 Wireless Radio with Joystick and Arduino

Tagged on: Radio Communication The NRF24l01

One thought on “Using Two Nordic nRF24L01 2.4 Wireless Radio with Joystick and Arduino”

Kalachand das
at

Arduino: 1.6.9 (Windows 7), Board: “Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)”

J:\nRF24\rx\rx.ino: In function ‘void loop()’:

rx:43: error: void value not ignored as it ought to be

done = radio.read( joystick, sizeof(joystick) );

^

Multiple libraries were found for “nRF24L01.h”
Used: C:\Users\dholu\Documents\Arduino\libraries\RF24
Not used: C:\Program Files\Arduino\libraries\RF24-master
Not used: C:\Program Files\Arduino\libraries\RF24-master
Not used: C:\Program Files\Arduino\libraries\RF24-master
Not used: C:\Program Files\Arduino\libraries\RF24-master
exit status 1
void value not ignored as it ought to be

This report would have more information with
“Show verbose output during compilation”
option enabled in File -> Preferences.

Please help me how can i fixed this problem?

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One thought on “Using Two Nordic nRF24L01 2.4 Wireless Radio with Joystick and Arduino”

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