4th sensor output Volt not Receive through nRF24L01+ using Arduino Mega

Other Hardware Sensors
1

When i connect my 4th sensor in the analog pin in Arduino Mega for transmit the voltage data to the receiver side through nRF24L01+, then only 3 sensor data shown in the serial monitor of the Receiving side and the 4th sensor displayed 0 voltage. Plz help me in this regard. I attach the code and the Transmitter and receiver side output.

//Transmitter Part
#include <SPI.h>              
#include <nRF24L01.h>         
#include <RF24.h>             
#define HallVolt1 A0          
#define HallVolt2 A1         
#define HallVolt3 A2         
#define HallVolt4 A3        

float hall1 = 0.0;
float hall2 = 0.0;
float hall3 = 0.0;
float hall4 = 0.0;
RF24 radio(2,3);             
const byte rxAddr[6] = "00001"; 

void setup() {
Serial.begin(9600);          
radio.begin(); 
radio.setRetries (15, 15);                                                                                                  
radio.openWritingPipe (rxAddr); 
radio.setPayloadSize (32);    
radio.stopListening ();         
}

void loop() {
hall1 = analogRead (HallVolt1);  
hall2 = analogRead (HallVolt2);
hall3 = analogRead (HallVolt3);
hall4 = analogRead (HallVolt4); 
hall1=hall1*5/1023;
hall2=hall2*5/1023;
hall3=hall3*5/1023;
hall4=hall4*5/1023;
Serial.print("Transmite Hall-1 Effect = "); 
Serial.print(hall1);
Serial.print("Volt");
Serial.print("\t");
Serial.print("Transmite Hall-2 Effect = "); 
Serial.print(hall2);
Serial.print("Volt");
Serial.print("\t");
Serial.print("Transmite Hall-3 Effect = ");
Serial.print(hall3);
Serial.print("Volt");
Serial.print("\t");
Serial.print("Transmite Hall-4 Effect = "); 
Serial.print(hall4);
Serial.print("Volt");
Serial.print("\t");
Serial.println();
radio.write(&hall1, sizeof(hall1));                                     
radio.write(&hall2, sizeof(hall2));
radio.write(&hall3, sizeof(hall3));
radio.write(&hall4, sizeof(hall4));
delay(1000);
}

//Receiver Part
#include <SPI.h>                   
#include <nRF24L01.h>            
#include <RF24.h>                  

float hall1 = 0.0;
float hall2 = 0.0;
float hall3 = 0.0;
float hall4 = 0.0;

RF24 radio(2,3);                    
const byte rxAddr[6] = "00001";     

void setup() { 
  while (!Serial);                  
  Serial.begin (9600);             
  radio.begin();
  radio.setPayloadSize(32);          
  radio.openReadingPipe(0, rxAddr);  
  radio.startListening();         
}

void loop() {
      
      if (radio.available()){
      radio.read(&hall1, sizeof(hall1));  
      radio.read(&hall2, sizeof(hall2));
      radio.read(&hall3, sizeof(hall3));
      radio.read(&hall4, sizeof(hall4)); 
      Serial.print(" Received Hall-1 Effect. = ");
      Serial.print(hall1);
      Serial.print("Volt");
      Serial.print("\t");
      Serial.print(" Received Hall-2 Effect. = ");
      Serial.print(hall2);
      Serial.print("Volt");
      Serial.print("\t");
      Serial.print(" Received Hall-3 Effect. = ");
      Serial.print(hall3);
      Serial.print("Volt");
      Serial.print("\t");
      Serial.print(" Received Hall-4 Effect. = "); 
      Serial.print(hall4);
      Serial.print("Volt");
      Serial.print("\t"); 
      Serial.println();
     
     }
            delay (1000);
     }

TXT.jpg
TXT.jpg1366×768 480 KB

RXT.jpg
RXT.jpg1366×768 473 KB

2

You've probably got a timing/synchronisation problem.

It would be better in this case, instead of having 4 separate reads and writes to have only one of each.

Create an array called say hall: float hall[4] ;

On the transmitter side, you fill the array from the 4 individual sensors then send the whole array in a single statement.

radio.write( &hall[0], sizeof(hall) );  // this sends the entire array of 4 items

On the receiver side you do the equivalent:

radio.reads( &hall[0], sizeof(hall) );  // this reads the entire array of 4 items

Then you can use/set the results by referring to hall[0], hall[1], hall[2] and hall[3].

3

Thank you very much...My problem is solved