Logitech Pedals+Shifter using One Arduino Leonardo

Using Arduino Project Guidance
1

Hi All,

First time posting and first time trying to 'create' a DIY project using Arduino, so please forgive me for any mistakes. I also do not know any programming and have only been googling questions I had to some questions that I ran into.

First of all, I have only ordered the stuff I need after watching this video tutorial: https://youtu.be/k5CtXG1rpZg

My main goal is to make an adapter for my pedals. However, I also had the idea that I can use the same arduino board for my shifter, after watching this video tutorial:
https://youtu.be/dLpWEu8kCec

After reading an old topic here, I think that I can do this by following the below wiring diagram (I just made this, sorry if it looks confusing):

Wiring Diagram
Wiring Diagram1405×1037 341 KB

And after looking at the two separate code provided for the two projects, I think it's possible to combine them onto one board by using the below code:

#include <Joystick.h>

// H-shifter mode analog axis thresholds
#define HS_XAXIS_12        400
#define HS_XAXIS_56        500
#define HS_YAXIS_135       800
#define HS_YAXIS_246       300

// Sequential shifter mode analog axis thresholds
#define SS_UPSHIFT_BEGIN   670
#define SS_UPSHIFT_END     600
#define SS_DOWNSHIFT_BEGIN 430
#define SS_DOWNSHIFT_END   500

// Handbrake mode analog axis limits
#define HB_MAXIMUM         530
#define HB_MINIMUM         400
#define HB_RANGE           (HB_MAXIMUM-HB_MINIMUM)

// Digital inputs definitions
#define DI_REVERSE         1
#define DI_MODE            3
#define DI_RED_CENTERRIGHT 4
#define DI_RED_CENTERLEFT  5
#define DI_RED_RIGHT       6
#define DI_RED_LEFT        7
#define DI_BLACK_TOP       8
#define DI_BLACK_RIGHT     9
#define DI_BLACK_LEFT      10
#define DI_BLACK_BOTTOM    11
#define DI_DPAD_RIGHT      12
#define DI_DPAD_LEFT       13
#define DI_DPAD_BOTTOM     14
#define DI_DPAD_TOP        15

// Shifter state
#define DOWN_SHIFT         -1
#define NO_SHIFT           0
#define UP_SHIFT           1

// Shifter mode
#define SHIFTER_MODE       0
#define HANDBRAKE_MODE     1

//int zAxis_ = 0; only used for 5AXIS
//int RxAxis_ = 0; only used for 5AXIS                   
int RyAxis_ = 0;  
int RzAxis_ = 0;          
int Throttle_ = 0;         

const bool initAutoSendState = true; 

// LED blink counter
int led=0;

// Shifter state
int shift=NO_SHIFT;

// Handbrake mode
int mode=SHIFTER_MODE;

int b[16];

int gear=0;                          // Default value is neutral

// Constant that maps the phyical pin to the joystick button.
//const int pinToButtonMap = 9;

// Last state of the button
int lastButtonState = 0;

// Create the Joystick
Joystick_ Joystick;

//combined setup() for pedals and shifter
void setup()
{
	// G29 shifter analog inputs configuration, A0 changed to A4, and A2 changed to A3
	pinMode(A4, INPUT_PULLUP);   // X axis
	pinMode(A3, INPUT_PULLUP);   // Y axis

	pinMode(2, INPUT); 

	for(int i=0; i<16; i++) b[i] = 0;
	b[DI_MODE] =0;
	
	// Initialize Joystick Library
	Joystick.begin();
  }

//was loop() but changed to pedals() for no conflict?
void pedals(){
	/*
	zAxis_ = analogRead(A0);  
	zAxis_ = map(zAxis_,0,1023,0,255);
	 Joystick.setZAxis(zAxis_);  
	*/

	/*
	RxAxis_ = analogRead(A1);
	 RxAxis_ = map(RxAxis_,0,1023,0,255);
	 Joystick.setRxAxis(RxAxis_);
	*/

	RyAxis_ = analogRead(A0);
	RyAxis_ = map(RyAxis_,0,1023,0,255);
	Joystick.setRyAxis(RyAxis_);

	RzAxis_ = analogRead(A1);
	RzAxis_ = map(RzAxis_,1023,0,255,0);            
	Joystick.setRzAxis(RzAxis_);
	  
	Throttle_ = analogRead(A2);
	Throttle_ = map(Throttle_,1023,0,255,0);         
	Joystick.setThrottle(Throttle_);                

	delay (50);
}

//was loop() but changed to shifter() for no conflict?
void shifter() {

	int x=analogRead(0);                 // X axis
	int y=analogRead(2);                 // Y axis

	int _isreverse = digitalRead(2);
	int _gear_ = 0;

if( _isreverse == 1 ){

    _gear_ = 8;
    b[DI_REVERSE]= 1;

}else{ 
  

  if(b[DI_MODE]==0)                    // H-shifter mode?
  {
    if(x<HS_XAXIS_12)                  // Shifter on the left?
    {
      if(y>HS_YAXIS_135) _gear_=1;       // 1st gear
      if(y<HS_YAXIS_246) _gear_=2;       // 2nd gear
    }
    else if(x>HS_XAXIS_56)             // Shifter on the right?
    {
      if(y>HS_YAXIS_135) _gear_=5;       // 5th gear
      if(y<HS_YAXIS_246) _gear_=6;       // 6th gear
     
    }
    else                               // Shifter is in the middle
    {
      if(y>HS_YAXIS_135) _gear_=3;       // 3rd gear
      if(y<HS_YAXIS_246) _gear_=4;       // 4th gear
    }
  }
}
  
  if(gear!=6) b[DI_REVERSE]=0;         // Reverse gear is allowed only on 6th gear position
  
   if (_gear_ != gear ){
      gear = _gear_;
      desactivar();
      Joystick.setButton(gear-1, HIGH);
   }
   delay(50);
}

void desactivar(){
  // Depress virtual button for current gear
  for(int i = 0; i <= 10 ; i++ )  Joystick.setButton(i, LOW);
}

For reference, below are the original codes provided by amstudio:

Pedals Code:

#include <Joystick.h>

Joystick_ Joystick;

//int zAxis_ = 0; 
//int RxAxis_ = 0;                    
int RyAxis_ = 0;  
int RzAxis_ = 0;          
int Throttle_ = 0;         

const bool initAutoSendState = true; 

void setup()
{
      Joystick.begin();
  }
   
void loop(){
    RyAxis_ = analogRead(A0);
    RyAxis_ = map(RyAxis_,0,1023,0,255);
    Joystick.setRyAxis(RyAxis_);

    RzAxis_ = analogRead(A1);
    RzAxis_ = map(RzAxis_,1023,0,255,0);            
    Joystick.setRzAxis(RzAxis_);
  
    Throttle_ = analogRead(A2);
    Throttle_ = map(Throttle_,1023,0,255,0);         
    Joystick.setThrottle(Throttle_);                
 
    delay (50);
}

Shifter Code:

#include <Joystick.h>

// Create the Joystick
Joystick_ Joystick;

// H-shifter mode analog axis thresholds
#define HS_XAXIS_12        400
#define HS_XAXIS_56        500
#define HS_YAXIS_135       800
#define HS_YAXIS_246       300

// Sequential shifter mode analog axis thresholds
#define SS_UPSHIFT_BEGIN   670
#define SS_UPSHIFT_END     600
#define SS_DOWNSHIFT_BEGIN 430
#define SS_DOWNSHIFT_END   500

// Handbrake mode analog axis limits
#define HB_MAXIMUM         530
#define HB_MINIMUM         400
#define HB_RANGE           (HB_MAXIMUM-HB_MINIMUM)

// Digital inputs definitions
#define DI_REVERSE         1
#define DI_MODE            3
#define DI_RED_CENTERRIGHT 4
#define DI_RED_CENTERLEFT  5
#define DI_RED_RIGHT       6
#define DI_RED_LEFT        7
#define DI_BLACK_TOP       8
#define DI_BLACK_RIGHT     9
#define DI_BLACK_LEFT      10
#define DI_BLACK_BOTTOM    11
#define DI_DPAD_RIGHT      12
#define DI_DPAD_LEFT       13
#define DI_DPAD_BOTTOM     14
#define DI_DPAD_TOP        15

// Shifter state
#define DOWN_SHIFT         -1
#define NO_SHIFT           0
#define UP_SHIFT           1

// Shifter mode
#define SHIFTER_MODE       0
#define HANDBRAKE_MODE     1

// LED blink counter
int led=0;

// Shifter state
int shift=NO_SHIFT;

// Handbrake mode
int mode=SHIFTER_MODE;

int b[16];

int gear=0;                          // Default value is neutral

// Constant that maps the phyical pin to the joystick button.
//const int pinToButtonMap = 9;

void setup() {
   // G29 shifter analog inputs configuration, A0 changed to A4 and A2 changed to A3
  pinMode(A4, INPUT_PULLUP);   // X axis
  pinMode(A3, INPUT_PULLUP);   // Y axis

  pinMode(2, INPUT); 

  for(int i=0; i<16; i++) b[i] = 0;
  b[DI_MODE] =0;
  // Initialize Joystick Library
  Joystick.begin();
  
}

// Last state of the button
int lastButtonState = 0;

void loop() {

  int x=analogRead(0);                 // X axis
  int y=analogRead(2);                 // Y axis

  int _isreverse = digitalRead(2);
  int _gear_ = 0;

if( _isreverse == 1 ){

      _gear_ = 8;
      b[DI_REVERSE]= 1;

}else{ 
  

  if(b[DI_MODE]==0)                    // H-shifter mode?
  {
    if(x<HS_XAXIS_12)                  // Shifter on the left?
    {
      if(y>HS_YAXIS_135) _gear_=1;       // 1st gear
      if(y<HS_YAXIS_246) _gear_=2;       // 2nd gear
    }
    else if(x>HS_XAXIS_56)             // Shifter on the right?
    {
      if(y>HS_YAXIS_135) _gear_=5;       // 5th gear
      if(y<HS_YAXIS_246) _gear_=6;       // 6th gear
     
    }
    else                               // Shifter is in the middle
    {
      if(y>HS_YAXIS_135) _gear_=3;       // 3rd gear
      if(y<HS_YAXIS_246) _gear_=4;       // 4th gear
    }
   
  }

}
  
  
  if(gear!=6) b[DI_REVERSE]=0;         // Reverse gear is allowed only on 6th gear position
  
   if (_gear_ != gear ){
      gear = _gear_;
      desactivar();
      Joystick.setButton(gear-1, HIGH);
   }
   delay(50);
}

void desactivar(){
  // Depress virtual button for current gear
  for(int i = 0; i <= 10 ; i++ )  Joystick.setButton(i, LOW);
}

I am unable to test it right now since the parts were ordered a few hours ago, but I wanted to seek help in advance, just in case I run into potential issues.

Also, what does the delay(50) do in both codes?

Thank you in advance!

2

it is simple. there are three section: before setup(), setup() itself and loop(). combine same sections together.

#include <Joystick.h>
Joystick_ Joystick;

and

Joystick.begin();

need only once.

3

Hello kolaha,

Thank you for the reply. I didn't realize you can combine the same sections together.

I had some trouble with the loop() part because I actually wrote a better code for both shifter and pedals, but the shifter loop needed delay of 100 but pedals code need to have no delay.

But I resolved it by using millis() instead of delay() to set a delay for the shifter code while being able to run the pedal code without delay, in the same loop().

Thanks for your help!

4

Can you share your new code? Or that code in above also works? I want to make adapter just like you. I'm new on arduino stuff

5

Logitech_Pedals_Shifter_USB_Smoothed.ino (7.2 KB)

Here is my code, please take note that the below values may need to be adjusted for you:

// H-shifter mode analog axis thresholds
#define HS_XAXIS_12        390 //default 390
#define HS_XAXIS_56        680 //default 680

It is responsible for reading shifter left and right position. May need to adjust if shifter doesnt read gears 1, 2, 5 and 6 properly.

2 Likes
6

Thanks mate, I really appreciate it!

7

Hello, I used your code and i'm getting this error: ‘Joystick_’ does not name a type; did you mean ‘Joystick’ , can you help me to solve the problem?

8

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