More than one RC transmitter and receiver

Other Hardware Robotics
1

Hi all , hoping someone can help out a dummy lol

im using KendinYap on YouTube codes for an rc transmitter and receiver , im wanting to use a 2nd setup but im having issues with them both behaving as hoped ,

using 1 radio at a time works great ( with different pipeOut numbers) but when both transmitters are powered up everything locks up and no signals seem to be sent to either receiver and no output work , if i turn 1 of the transmitters off , the on one works perfectly

I have tried changing the numbers on the pipeOut line but the same issue is there ,

if anyone has any ideas ??

The codes im using are as follows

TRANSMITTER

// 8 Channel Transmitter & Trims | 8 Kanal Verici ve Trimler

  #include <SPI.h>
  #include <nRF24L01.h>
  #include <RF24.h>
  #include <EEPROM.h>
    
  const uint64_t pipeOut = 000322;        // NOTE: The same as in the receiver 000322 | Alıcı kodundaki adres ile aynı olmalı
  RF24 radio(9, 10);                      // Select CE,CSN pin | CE ve CSN pinlerin seçimi
  
 #define trimbut_1 1                      // Trim button 1 / Pin D1
 #define trimbut_2 2                      // Trim button 2 / Pin D2
 #define trimbut_3 3                      // Trim button 3 / Pin D3
 #define trimbut_4 4                      // Trim button 4 / Pin D4
 #define trimbut_5 5                      // Trim button 5 / Pin D5
 #define trimbut_6 6                      // Trim button 6 / Pin D6
 
 int tvalue1 = EEPROM.read(1) * 4;        // Reading trim values from Eprom  |  Trim değerlerinin Epromdan okunması
 int tvalue2 = EEPROM.read(3) * 4;        
 int tvalue3 = EEPROM.read(5) * 4;        

  struct Signal {
  byte throttle;
  byte pitch;
  byte roll;
  byte yaw;
  byte aux1;
  byte aux2;
  byte aux3;
  byte aux4;  
};

  Signal data;
  void ResetData() 
{
  data.throttle = 512;                      // Signal lost position | Sinyal kesildiğindeki pozisyon
  data.pitch = 127;
  data.roll = 127;
  data.yaw = 127;
  data.aux1 = 0;                         
  data.aux2 = 0;
  data.aux3 = 0;
  data.aux4 = 0;
}
  void setup()
{
                                         // Configure the NRF24 module  | NRF24 modül konfigürasyonu
  radio.begin();
  radio.openWritingPipe(pipeOut);
  radio.setAutoAck(false);
  radio.setDataRate(RF24_250KBPS);       // The lowest data rate value for more stable communication  | Daha kararlı iletişim için en düşük veri hızı.
  radio.setPALevel(RF24_PA_MAX);         // Output power is set for maximum |  Çıkış gücü maksimum için ayarlanıyor.
  radio.stopListening();                 // Start the radio comunication for Transmitter | Verici için sinyal iletişimini başlatır.
  ResetData();
 
  pinMode(trimbut_1, INPUT_PULLUP); 
  pinMode(trimbut_2, INPUT_PULLUP);
  pinMode(trimbut_3, INPUT_PULLUP); 
  pinMode(trimbut_4, INPUT_PULLUP);
  pinMode(trimbut_5, INPUT_PULLUP); 
  pinMode(trimbut_6, INPUT_PULLUP);

  tvalue1= EEPROM.read(1) * 4;
  tvalue2= EEPROM.read(3) * 4;
  tvalue3= EEPROM.read(5) * 4;
}

// Joystick center and its borders | Joystick merkez ve sınırları
  int Border_Map(int val, int lower, int middle, int upper, bool reverse)
{
  val = constrain(val, lower, upper);
  if ( val < middle )
  val = map(val, lower, middle, 0, 128);
  else
  val = map(val, middle, upper, 128, 255);
  return ( reverse ? 255 - val : val );
}
  void loop()
{

// Trims and Limiting trim values  |  Trimler ve Trim değerlerini sınırlandırma

  if(digitalRead(trimbut_1)==LOW and tvalue1 < 630) {
    tvalue1=tvalue1+15;
    EEPROM.write(1,tvalue1/4); 
    delay (130);
  }   
  if(digitalRead(trimbut_2)==LOW and tvalue1 > 280){
    tvalue1=tvalue1-15;
    EEPROM.write(1,tvalue1/4);
    delay (130);
  }
 
  if(digitalRead(trimbut_3)==LOW and tvalue2 < 630) {
    tvalue2=tvalue2+15;
    EEPROM.write(3,tvalue2/4);
    delay (130);
  }   
  if(digitalRead(trimbut_4)==LOW and tvalue2 > 280){
    tvalue2=tvalue2-15;
    EEPROM.write(3,tvalue2/4);
    delay (130);
  }  
    
    if(digitalRead(trimbut_5)==LOW and tvalue3 < 630) {
     tvalue3=tvalue3+15;
     EEPROM.write(5,tvalue3/4);
     delay (130);
  }   
  if(digitalRead(trimbut_6)==LOW and tvalue3 > 280){
    tvalue3=tvalue3-15;
    EEPROM.write(5,tvalue3/4);
    delay (130);
  }
  
// Control Stick Calibration for channels  |  Her bir kanal için kumanda Kol Kalibrasyonları 

  data.roll = Border_Map( analogRead(A3), 0, tvalue1, 1023, true );       // "true" or "false" for signal direction | "true" veya "false" sinyal yönünü belirler
  data.pitch = Border_Map( analogRead(A2), 0, tvalue2, 1023, true );            
  data.throttle = Border_Map( analogRead(A1),570, 800, 1023, false );    // For Single side ESC | Tek yönlü ESC için
  // data.throttle = Border_Map( analogRead(A1),0, 512, 1023, false );   // For Bidirectional ESC | Çift yönlü ESC için
  data.yaw = Border_Map( analogRead(A0), 0, tvalue3, 1023, true );              
  data.aux1 = Border_Map( analogRead(A4), 0, 512, 1023, true );                 
  data.aux2 = Border_Map( analogRead(A5), 0, 512, 1023, true );                 
  data.aux3 = digitalRead(7);
  data.aux4 = digitalRead(8);
  radio.write(&data, sizeof(Signal)); 
}

RECEIVER

//  8 Channel Receiver | 8 Kanal Alıcı

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

int ch_width_1 = 0;
int ch_width_2 = 0;
int ch_width_3 = 0;
int ch_width_4 = 0;
int ch_width_5 = 0;
int ch_width_6 = 0;
int ch_width_7 = 0;
int ch_width_8 = 0;

Servo ch1;
Servo ch2;
Servo ch3;
Servo ch4;
Servo ch5;
Servo ch6;
Servo ch7;
Servo ch8;

struct Signal {

byte throttle;
byte pitch;  
byte roll;
byte yaw;
byte aux1;
byte aux2;
byte aux3;
byte aux4;     
};

Signal data;

const uint64_t pipeIn = 000322;
RF24 radio(9, 10); 

void ResetData()
{

data.throttle = 0;
data.roll = 127;
data.pitch = 127;
data.yaw = 127;
data.aux1 = 0;                                              // Define the inicial value of each data input. | Veri girişlerinin başlangıç değerleri
data.aux2 = 0;
data.aux3 = 0;
data.aux4 = 0;                                                     
}

void setup()
{
                                                           // Set the pins for each PWM signal | Her bir PWM sinyal için pinler belirleniyor.
  ch1.attach(0);
  ch2.attach(2);
  ch3.attach(3);
  ch4.attach(4);
  ch5.attach(5);
  ch6.attach(6);
  ch7.attach(7);
  ch8.attach(8);
                                                           
  ResetData();                                             // Configure the NRF24 module  | NRF24 Modül konfigürasyonu
  radio.begin();
  radio.openReadingPipe(1,pipeIn);
  radio.setAutoAck(false);
  radio.setDataRate(RF24_250KBPS);                          // The lowest data rate value for more stable communication  | Daha kararlı iletişim için en düşük veri hızı.
  radio.setPALevel(RF24_PA_MAX);                            // Output power is set for maximum |  Çıkış gücü maksimum için ayarlanıyor.
  radio.startListening();                                   // Start the radio comunication for receiver | Alıcı için sinyal iletişimini başlatır.

}

unsigned long lastRecvTime = 0;

void recvData()
{
while ( radio.available() ) {
radio.read(&data, sizeof(Signal));
lastRecvTime = millis();                                    // Receive the data | Data alınıyor
}
}

void loop()
{
recvData();
unsigned long now = millis();
if ( now - lastRecvTime > 1000 ) {
ResetData();                                                // Signal lost.. Reset data | Sinyal kayıpsa data resetleniyor
}

ch_width_1 = map(data.roll, 0, 255, 1000, 2000);
ch_width_2 = map(data.pitch, 0, 255, 1000, 2000); 
ch_width_3 = map(data.throttle, 0, 255, 1000, 2000); 
ch_width_4 = map(data.yaw, 0, 255, 1000, 2000); 
ch_width_5 = map(data.aux1, 0, 255, 1000, 2000); 
ch_width_6 = map(data.aux2, 0, 255, 1000, 2000); 
ch_width_7 = map(data.aux3, 0, 1, 1000, 2000); 
ch_width_8 = map(data.aux4, 0, 1, 1000, 2000); 


ch1.writeMicroseconds(ch_width_1);                          // Write the PWM signal | PWM sinyaller çıkışlara gönderiliyor
ch2.writeMicroseconds(ch_width_2);
ch3.writeMicroseconds(ch_width_3);
ch4.writeMicroseconds(ch_width_4);
ch5.writeMicroseconds(ch_width_5);
ch6.writeMicroseconds(ch_width_6);                          
ch7.writeMicroseconds(ch_width_7);
ch8.writeMicroseconds(ch_width_8);


}
2

You should use 'Edit -> Auto Format' (^T) and re-format your code in the Arduino IDE before you post it... There is no form which makes it difficult to read.

I only see one 'radio' object... how are you selecting 'a' radio or 'b' radio?

I don't know how this 'package' works, so I'm asking ...

It would be nice to see what you have hooked up hardware wise..

A schematic, photo anything helps... such as links to the rc tx/rx hardware.

:smiley_cat:

3

my bad forgot to put the link to the website with all the codes and pics

4

Where/how is the 2nd radio module connected and how to you tell one from the other in the code?

:smiley_cat:

5

there not connected together ,

i want to run 2 of these remote controls at the same time

6

Almost certainly you are getting RF interference between the systems because they have not had their RF configurations set. This might help you find out how to configure them, they appear to have 125 channels to avoid interference.

" How It Works

The module can use 125 different channels which gives a possibility to have a network of 125 independently working modems in one place. Each channel can have up to 6 addresses, or each unit can communicate with up to 6 other units at the same time."

7

All sorted :slight_smile:

Just needed to add

radio.setChannel (125);

the 125 referring to the channel number ( i actually used 46 and 92 in the 2 radios and no more interference :slight_smile: