DIY Arduino Buttonbox

Hi all,i have done also a button box,a just give a touch ,just use some magnetic stripes to do the layout for the games !a sample in the photo!

for 8 encoder and 20 buttons I would need two arduino? Can I put a USB hub to use a single cable? No choice?

EVOLACO just check if this work for your projet with 8 encoders!

How many buttons and encoder can you use in total? Is there more information and the sketch?

i think you can put 96 butons and 8 encoderes( butons =coluns x lines)12x8=96 for more info check mmjoy2 software(it works plug and play)if you need more than 8 encoders you can connect also encoders to the matrix keyboard (colunsxlines=matrix)

Hi Jon!
I am very sorry for the late reply (i did not get an update mail, must have mest it up some how)

I have connected the rotaries the same way as you, but i am using this code in the beginning.
I hope this will help you, if you haven't solved it already.
If you haven't and this wont help i will keep looking and compering code.



rotariesdef rotaries[NUMROTARIES] {
{0,1,26,27,0},
{2,3,28,29,0},
{4,5,30,31,0},
{6,7,22,23,0},
{8,9,24,25,0},

I just signed up to say thank you for this - I have learned a ton about arduino from this and other posts.

Maybe my struggle will help some one else. I was having a hell of a time with my rotary encoder + push button with 5 pins. I did not need the VCC pin for mine, so I wired the 3 encoder pins as shown in the diagram in this thread (pin1, pin2, ground), and then the 1 button pin to any open pin on the arduino board. I coded the push buttons separate from the grid buttons since i was not sure how to include in the grid on a single wire.

The big problem i was having, not sure if it's due to my cheap encoders or not, but when turning the encoder, occasionally the rotary push button would fire even though it was not being pressed. So after trying all types of garbage, I incorporated a delay after the rotary encoders are used so the push button is disabled for a short time, and this stopped all arbitrary push button firings.

This is far from properly coded (lots of single variables where arrays should be used, rookie Arduino user, etc) but it may help someone stuck that is just trying to get a project working. I noted all my changes with comments so no one will mistake my butchery for the original authors sketch, potentially ruining his reputation lol!

Code:

//Simple buttonbox sketch
//Supports up to 25 buttons and up to 4 encoders
//version 0.2 by TOPMO3
//
//
//Arduino IDE 1.6.6 (or above) !
//
//Joystick library from  Matthew Heironimus, https://github.com/MHeironimus/ArduinoJoystickLibrary
//
//Encoders code from Ben Buxton
//More info: http://www.buxtronix.net/2011/10/rotary-encoders-done-properly.html
//
//Thank you guys! :)
//
// Butchered hackjob additions by Nino Scholz (all the disableflag stuff and the rotarybutton additions)

//Uncomment this for HALFSTEP encoder operation
#define HALF_STEP

#include <Keypad.h>
#include <Joystick.h>

#define NUMROTARIES 3
#define ENABLE_PULLUPS
#define NUMBUTTONS 5
#define NUMROWS 1
#define NUMCOLS 5

// ** Butchered hackjob additions initialization
#define ROTARYBUTTONDELAY 100 // time period after encoder activation that rotary push button is disabled to prevent misfire
const int buttonPin1 = 9;     // the number of the pushbutton1 pin
int buttonState1 = 0;         // variable for reading the pushbutton1 status
const int buttonPin2 = 10;    // the number of the pushbutton2 pin
int buttonState2 = 0;         // variable for reading the pushbutton2 status
const int buttonPin3 = 16;    // the number of the pushbutton3 pin
int buttonState3 = 0;         // variable for reading the pushbutton3 status
int disableFlag = 0;          // flag to tell the rotarybutton not to fire, since the encoder was sometimes arbitrarily activating it.
int disableCounter = 0;       // counter that resets at #define ROTARYBUTTONDELAY 100
// END Butchered hackjob additions initialization

// 1x5 normal button grid
//define the symbols on the buttons of the keypads
byte buttons[NUMROWS][NUMCOLS] = {
  {1,2,3,4,5},
};;


struct rotariesdef {
  byte pin1;
  byte pin2;
  int ccwchar;
  int cwchar;
  volatile unsigned char state;
};

// only 3 encoders on my box. [pin1,pin2,joyoutput1,joyoutput2,??)
rotariesdef rotaries[NUMROTARIES] {
  {0,1,20,21,0},
  {2,3,23,24,0},
  {4,5,26,27,0}, 
};

#define DIR_CCW 0x10
#define DIR_CW 0x20
#define R_START 0x0

#ifdef HALF_STEP
// Use the half-step state table (emits a code at 00 and 11)
#define R_CCW_BEGIN 0x1
#define R_CW_BEGIN 0x2
#define R_START_M 0x3
#define R_CW_BEGIN_M 0x4
#define R_CCW_BEGIN_M 0x5
const unsigned char ttable[6][4] = {
  // R_START (00)
  {R_START_M,            R_CW_BEGIN,     R_CCW_BEGIN,  R_START},
  // R_CCW_BEGIN
  {R_START_M | DIR_CCW, R_START,        R_CCW_BEGIN,  R_START},
  // R_CW_BEGIN
  {R_START_M | DIR_CW,  R_CW_BEGIN,     R_START,      R_START},
  // R_START_M (11)
  {R_START_M,            R_CCW_BEGIN_M,  R_CW_BEGIN_M, R_START},
  // R_CW_BEGIN_M
  {R_START_M,            R_START_M,      R_CW_BEGIN_M, R_START | DIR_CW},
  // R_CCW_BEGIN_M
  {R_START_M,            R_CCW_BEGIN_M,  R_START_M,    R_START | DIR_CCW},
};
#else
// Use the full-step state table (emits a code at 00 only)
#define R_CW_FINAL 0x1
#define R_CW_BEGIN 0x2
#define R_CW_NEXT 0x3
#define R_CCW_BEGIN 0x4
#define R_CCW_FINAL 0x5
#define R_CCW_NEXT 0x6

const unsigned char ttable[7][4] = {
  // R_START
  {R_START,    R_CW_BEGIN,  R_CCW_BEGIN, R_START},
  // R_CW_FINAL
  {R_CW_NEXT,  R_START,     R_CW_FINAL,  R_START | DIR_CW},
  // R_CW_BEGIN
  {R_CW_NEXT,  R_CW_BEGIN,  R_START,     R_START},
  // R_CW_NEXT
  {R_CW_NEXT,  R_CW_BEGIN,  R_CW_FINAL,  R_START},
  // R_CCW_BEGIN
  {R_CCW_NEXT, R_START,     R_CCW_BEGIN, R_START},
  // R_CCW_FINAL
  {R_CCW_NEXT, R_CCW_FINAL, R_START,     R_START | DIR_CCW},
  // R_CCW_NEXT
  {R_CCW_NEXT, R_CCW_FINAL, R_CCW_BEGIN, R_START},
};
#endif


byte rowPins[NUMROWS] = {21}; //connect to the row pinouts of the keypad
byte colPins[NUMCOLS] = {20,19,18,15,14}; //connect to the column pinouts of the keypad

//initialize an instance of class NewKeypad
Keypad buttbx = Keypad( makeKeymap(buttons), rowPins, colPins, NUMROWS, NUMCOLS);

//initialize an Joystick with 34 buttons;
Joystick_ Joystick(JOYSTICK_DEFAULT_REPORT_ID,
  JOYSTICK_TYPE_JOYSTICK, 34, 0,
  false, false, false, false, false, false,
  false, false, false, false, false);


void setup() {
  Joystick.begin();
  rotary_init();
  rotaryButton_init();
}

/* Call this once in setup(). */
void rotaryButton_init() {
 
   // initialize the pushbutton pin as an input:
   pinMode(buttonPin1, INPUT_PULLUP);       
   pinMode(buttonPin2, INPUT_PULLUP);       
   pinMode(buttonPin3, INPUT_PULLUP);       
 
  }


void loop() {

  // ** butchered hack job addition
  disableCounter++; // increment the delay counter for rotarybutton inactive timeframe
  if (disableCounter > ROTARYBUTTONDELAY) { disableCounter = 0; disableFlag = 0; }; // if enough time has passed, allow rotary buttons to work again
  // END butchered hackjob addition
 
  CheckAllEncoders();
  CheckAllButtons();
} 


void CheckAllButtons(void) {
      if (buttbx.getKeys())
    {
       for (int i=0; i<LIST_MAX; i++)   // Scan the whole key list.
        {
           if ( buttbx.key[i].stateChanged )   // Only find keys that have changed state.
            {
            switch (buttbx.key[i].kstate) {  // Report active key state : IDLE, PRESSED, HOLD, or RELEASED
                    case PRESSED:
                    case HOLD:
                              Joystick.setButton(buttbx.key[i].kchar, 1);                             
                              break;
                    case RELEASED:
                    case IDLE:
                              Joystick.setButton(buttbx.key[i].kchar, 0);                             
                              break;
            }
           }   
         }
     }
}


/* Call this once in setup(). */
void rotary_init() {
  for (int i=0;i<NUMROTARIES;i++) {   
    pinMode(rotaries[i].pin1, INPUT);
    pinMode(rotaries[i].pin2, INPUT);
    #ifdef ENABLE_PULLUPS
      digitalWrite(rotaries[i].pin1, HIGH);
      digitalWrite(rotaries[i].pin2, HIGH);
    #endif
  }
}


/* Read input pins and process for events. Call this either from a
 * loop or an interrupt (eg pin change or timer).
 *
 * Returns 0 on no event, otherwise 0x80 or 0x40 depending on the direction.
 */
unsigned char rotary_process(int _i) {
   unsigned char pinstate = (digitalRead(rotaries[_i].pin2) << 1) | digitalRead(rotaries[_i].pin1);
  rotaries[_i].state = ttable[rotaries[_i].state & 0xf][pinstate];
  return (rotaries[_i].state & 0x30);
}

void CheckAllEncoders(void) {
  for (int i=0;i<NUMROTARIES;i++) {
    unsigned char result = rotary_process(i);
    if (result == DIR_CCW) {
      Joystick.setButton(rotaries[i].ccwchar, 1); delay(100); Joystick.setButton(rotaries[i].ccwchar, 0);
       // Butchered hackjob addition
       disableFlag = 1; // disable the rotary pushbuttons to prevent misfires during encoder use
       disableCounter = 0; // reset the timer     
       // end Butchered hackjob addition
    };
    if (result == DIR_CW) {
      Joystick.setButton(rotaries[i].cwchar, 1); delay(100); Joystick.setButton(rotaries[i].cwchar, 0);
      // Butchered hackjob addition
      disableFlag = 1;  // disable the rotary pushbuttons to prevent misfires during encoder use
      disableCounter = 0;  // reset the timer         
      // Butchered hackjob addition
    };
  }

 // *** Butchered hackjob addition check the push buttons on encoders
 buttonState1 = digitalRead(buttonPin1);
 buttonState2 = digitalRead(buttonPin2);
 buttonState3 = digitalRead(buttonPin3);

 // check if the pushbutton is pressed. Should set up constants for 22,25,28 - they are the joystick output buttons
 // if it is, the buttonState is HIGH:
 if (buttonState1 == LOW && disableFlag == 0) {     
   // turn LED on:   
   Joystick.setButton(22, 1);   
   return;;
 }
 else {
   Joystick.setButton(22, 0);   
 }

 if (buttonState2 == LOW && disableFlag == 0) {     
   // turn LED on:   
   Joystick.setButton(25, 1);   
   return;;
 }
 else {
   Joystick.setButton(25, 0);   
 }

 if (buttonState3 == LOW && disableFlag == 0) {     
   // turn LED on:   
   Joystick.setButton(28, 1);   
   return;;
 }
 else {
   Joystick.setButton(28, 0);   
 }
}
// END Butchered hackjob addition check the push buttons on encoders

I don't know anything about the Arduino language (yet), but I've build this box and it's all working. The only thing is when I push a button repeatedly the output is different all the time. One time it's CTRL+E, another time ALT+E and ofcourse CTRL+ALT+E. Can I do something about it? BTW I use QiPress to check this. Thanks for your help. I'm use the keyboard script!

Hi @Henrik ,

Just want to let you know that the encoders and all buttons are working fine.
Thanks for your reply.

Grts Jon

Hi. Only three decoders are working for the joystick version (2d). If I download the joystick library I see only joystick there, not joystick 2 & 3.

Hello everyone, do not program arduino, but thanks to these posts I have started an online course.
I appreciate the work and the contribution of all, of which I have learned a lot
but I find an error when compiling ... can someone tell me how to solve it ?? ... thanks to everyone.
using google translator sorry!

sorry !! ... here the error capture

Hi I am getting this error when trying to upload.

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Phil\Documents\Arduino\libraries -fqbn=arduino:avr:micro -vid-pid=0X2341_0X8037 -ide-version=10805 -build-path C:\Users\Phil\AppData\Local\Temp\arduino_build_644963 -warnings=none -build-cache C:\Users\Phil\AppData\Local\Temp\arduino_cache_740029 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\Phil\Documents\Arduino\buttsimpjoy_02d\buttsimpjoy_02d.ino
C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Phil\Documents\Arduino\libraries -fqbn=arduino:avr:micro -vid-pid=0X2341_0X8037 -ide-version=10805 -build-path C:\Users\Phil\AppData\Local\Temp\arduino_build_644963 -warnings=none -build-cache C:\Users\Phil\AppData\Local\Temp\arduino_cache_740029 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\Phil\Documents\Arduino\buttsimpjoy_02d\buttsimpjoy_02d.ino
Using board 'micro' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr
Using core 'arduino' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr
Build options changed, rebuilding all
Detecting libraries used...
"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega32u4 -DF_CPU=16000000L -DARDUINO=10805 -DARDUINO_AVR_MICRO -DARDUINO_ARCH_AVR -DUSB_VID=0x2341 -DUSB_PID=0x8037 '-DUSB_MANUFACTURER="Unknown"' '-DUSB_PRODUCT="Arduino Micro"' "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\micro" "C:\Users\Phil\AppData\Local\Temp\arduino_build_644963\sketch\buttsimpjoy_02d.ino.cpp" -o "nul"
"C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega32u4 -DF_CPU=16000000L -DARDUINO=10805 -DARDUINO_AVR_MICRO -DARDUINO_ARCH_AVR -DUSB_VID=0x2341 -DUSB_PID=0x8037 '-DUSB_MANUFACTURER="Unknown"' '-DUSB_PRODUCT="Arduino Micro"' "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino" "-IC:\Program Files (x86)\Arduino\hardware\arduino\avr\variants\micro" "C:\Users\Phil\AppData\Local\Temp\arduino_build_644963\sketch\buttsimpjoy_02d.ino.cpp" -o "C:\Users\Phil\AppData\Local\Temp\arduino_build_644963\preproc\ctags_target_for_gcc_minus_e.cpp"
C:\Users\Phil\Documents\Arduino\buttsimpjoy_02d\buttsimpjoy_02d.ino:21:20: fatal error: Keypad.h: No such file or directory

#include <Keypad.h>

^

compilation terminated.

exit status 1
Error compiling for board Arduino/Genuino Micro.

Sorry newbie here. but got it sorted

Hello
I am testing the code for five rotary and I have a problem. Compiling correctly, I upload the program without failures, and testing the two arrays that have been published, the fifth rotary only manages to activate the button 25 in one direction. The other four rotary if they work correctly. I leave the code here in case someone could help me, thank you.

Code:

//BUTTON BOX
//USE w ProMicro
//Tested in WIN10 + Assetto Corsa
//AMSTUDIO
//20.8.17

#include <Keypad.h>
#include <Joystick.h>

#define ENABLE_PULLUPS
#define NUMROTARIES 5
#define NUMBUTTONS 16
#define NUMROWS 4
#define NUMCOLS 4


byte buttons[NUMROWS][NUMCOLS] = {
  {0,1,2,3},
  {4,5,6,7},
  {8,9,10,11},
  {12,13,14,15},
 
};

struct rotariesdef {
  byte pin1;
  byte pin2;
  int ccwchar;
  int cwchar;
  volatile unsigned char state;
};

rotariesdef rotaries[NUMROTARIES] {
  {0,1,16,17,0},
  {2,3,18,19,0},
  {4,5,20,21,0},
  {6,7,22,23,0},
  {8,9,24,25,0},
};

/*rotariesdef rotaries[NUMROTARIES] {
{0,1,24,25,0},
{2,3,28,29,0},
{4,5,30,31,0},
{6,7,22,23,0},
{8,9,26,27,0},
};*/

#define DIR_CCW 0x10
#define DIR_CW 0x20
#define R_START 0x0

#ifdef HALF_STEP
#define R_CCW_BEGIN 0x1
#define R_CW_BEGIN 0x2
#define R_START_M 0x3
#define R_CW_BEGIN_M 0x4
#define R_CCW_BEGIN_M 0x5
const unsigned char ttable[6][4] = {
  // R_START (00)
  {R_START_M,            R_CW_BEGIN,     R_CCW_BEGIN,  R_START},
  // R_CCW_BEGIN
  {R_START_M | DIR_CCW, R_START,        R_CCW_BEGIN,  R_START},
  // R_CW_BEGIN
  {R_START_M | DIR_CW,  R_CW_BEGIN,     R_START,      R_START},
  // R_START_M (11)
  {R_START_M,            R_CCW_BEGIN_M,  R_CW_BEGIN_M, R_START},
  // R_CW_BEGIN_M
  {R_START_M,            R_START_M,      R_CW_BEGIN_M, R_START | DIR_CW},
  // R_CCW_BEGIN_M
  {R_START_M,            R_CCW_BEGIN_M,  R_START_M,    R_START | DIR_CCW},
};
#else
#define R_CW_FINAL 0x1
#define R_CW_BEGIN 0x2
#define R_CW_NEXT 0x3
#define R_CCW_BEGIN 0x4
#define R_CCW_FINAL 0x5
#define R_CCW_NEXT 0x6

const unsigned char ttable[7][4] = {
  // R_START
  {R_START,    R_CW_BEGIN,  R_CCW_BEGIN, R_START},
  // R_CW_FINAL
  {R_CW_NEXT,  R_START,     R_CW_FINAL,  R_START | DIR_CW},
  // R_CW_BEGIN
  {R_CW_NEXT,  R_CW_BEGIN,  R_START,     R_START},
  // R_CW_NEXT
  {R_CW_NEXT,  R_CW_BEGIN,  R_CW_FINAL,  R_START},
  // R_CCW_BEGIN
  {R_CCW_NEXT, R_START,     R_CCW_BEGIN, R_START},
  // R_CCW_FINAL
  {R_CCW_NEXT, R_CCW_FINAL, R_START,     R_START | DIR_CCW},
  // R_CCW_NEXT
  {R_CCW_NEXT, R_CCW_FINAL, R_CCW_BEGIN, R_START},
};
#endif

byte rowPins[NUMROWS] = {21,20,19,18};
byte colPins[NUMCOLS] = {15,14,16,10};

Keypad buttbx = Keypad( makeKeymap(buttons), rowPins, colPins, NUMROWS, NUMCOLS);

Joystick_ Joystick(JOYSTICK_DEFAULT_REPORT_ID,
  JOYSTICK_TYPE_JOYSTICK, 25, 0,
  false, false, false, false, false, false,
  false, false, false, false, false);

void setup() {
  Joystick.begin();
  rotary_init();}

void loop() {

  CheckAllEncoders();

  CheckAllButtons();

}

void CheckAllButtons(void) {
      if (buttbx.getKeys())
    {
       for (int i=0; i<LIST_MAX; i++)   
        {
           if ( buttbx.key[i].stateChanged )   
            {
            switch (buttbx.key[i].kstate) {
                    case PRESSED:
                    case HOLD:
                              Joystick.setButton(buttbx.key[i].kchar, 1);
                              break;
                    case RELEASED:
                    case IDLE:
                              Joystick.setButton(buttbx.key[i].kchar, 0);
                              break;
            }
           }   
         }
     }
}


void rotary_init() {
  for (int i=0;i<NUMROTARIES;i++) {
    pinMode(rotaries[i].pin1, INPUT);
    pinMode(rotaries[i].pin2, INPUT);
    #ifdef ENABLE_PULLUPS
      digitalWrite(rotaries[i].pin1, HIGH);
      digitalWrite(rotaries[i].pin2, HIGH);
    #endif
  }
}


unsigned char rotary_process(int _i) {
   unsigned char pinstate = (digitalRead(rotaries[_i].pin2) << 1) | digitalRead(rotaries[_i].pin1);
  rotaries[_i].state = ttable[rotaries[_i].state & 0xf][pinstate];
  return (rotaries[_i].state & 0x30);
}

void CheckAllEncoders(void) {
  for (int i=0;i<NUMROTARIES;i++) {
    unsigned char result = rotary_process(i);
    if (result == DIR_CCW) {
      Joystick.setButton(rotaries[i].ccwchar, 1); delay(50); Joystick.setButton(rotaries[i].ccwchar, 0);
    };
    if (result == DIR_CW) {
      Joystick.setButton(rotaries[i].cwchar, 1); delay(50); Joystick.setButton(rotaries[i].cwchar, 0);
    };
  }
}

Hello and thank you topmo3 for making open source files! I have KY-040 rotary encoders(built in 10k resistors) and am using butsimjoy02d file. Simple momentary buttons work and 3 of 4 rotary encoders read cw/ccw. However I have two problems.
1. The rotary encoders push buttons show a series of button pushes instead of one when using win 10 game controller settings. Ex 22,23,24,25,26 will highlight red instead of just one number when pressing the rotary button.
2. The Pins 6 and 7 on the promicro do not work on my rotary encoder? I have tried the other buttsimjoy files and have the same problem.
Thank you for any help in fixing these issues.

Hello guys,
I built my own ButtonBox yesterday...
I have got 4 toggle-switches with two way activation (on) and a springreturn to the middle (off).
And 8 normal push-buttons.
All this is connected to an normal Arduino Pro Micro...

Now I want to know if I even wired it up correct?
And which Arduino sketch I have to use?
Because I didn't get it running on my own.

If I use the first sketch, I can upload it without any problems but the buttons won't work. (Some of them work sometimes?!)
If I use the newer ones I will have different errors. (expected unqualified-id before '.' token or 'xyz' does not name a type)

I have downloadet many librarys. (keypad, keyboard, joystick...)

What do I have to do now?


Cheers

Luis

Hey Guys,
I got it all sortet now...

But how do I set up the sketch for 8 buttons and 4 toggle switches?
(They got 2 ways and return to off.)

Cheers,
Luis

Could someone help me? I'm making a button box can call 24 buttons. But how can I use the potentiometer in the same function as the encoders. I don't know how to connect the 3 pin arduino pro

Hi Danilo,

I made an F1 steering wheel with buttons, encoders and potentiometer.
I attached the Arduino code. Maybe it will help you.

Ride on