@outbaxx did a CK37 panel with a display…
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Checked his channel. Cool stuff 
really wondering if i should do, when i get to doing it, to do a throttle like him, or like the real where it was direct connected with a long rod, to the… fuelthingy xD
Yes, DCS-BIOS can directly interface with your hardware, it has arduino commands. Or if you are running it on a standalone machine you can send packets back and forth.
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I’ve put 100ohm resistors between the pins on the rotary switch and read the resistance on one pin on the Nano.
I have one Nano for the button and switches and one Nano for the display.
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@outbaxx how did you code the part where it reads the, i guess voltageread.
I tried it but dont know enough about dcs bios to troubleshoot it.
Think i dont have the part where it knows which value it is but cant send the correct value to dcs bios.
Thanks, thats exactly what i needed! You can access the value of the data panel, and i bet i can get it to output the value of the destination display too
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//#define DCSBIOS_IRQ_SERIAL
//#define DCSBIOS_DEFAULT_SERIAL
#define DCSBIOS_RS485_SLAVE 21
#define TXENABLE_PIN 2
#include "DcsBios.h"
DcsBios::Switch2Pos datapanelKey1("DATAPANEL_KEY_1", 12);
DcsBios::Switch2Pos datapanelKey2("DATAPANEL_KEY_2", 11);
DcsBios::Switch2Pos datapanelKey3("DATAPANEL_KEY_3", 10);
DcsBios::Switch2Pos datapanelKey4("DATAPANEL_KEY_4", 9);
DcsBios::Switch2Pos datapanelKey5("DATAPANEL_KEY_5", 8);
DcsBios::Switch2Pos datapanelKey6("DATAPANEL_KEY_6", 7);
DcsBios::Switch2Pos datapanelKey7("DATAPANEL_KEY_7", 6);
// PIN 5 for PWM LED
int PanelLight_pin = 5;
int PanelLed_Value;
DcsBios::Switch2Pos datapanelKey8("DATAPANEL_KEY_8", 4);
DcsBios::Switch2Pos datapanelKey9("DATAPANEL_KEY_9", 3);
DcsBios::Switch2Pos ck37RensaClear("CK37_RENSA_CLEAR", A0);
DcsBios::Switch2Pos datapanelKey0("DATAPANEL_KEY_0", A1);
DcsBios::Switch2Pos dataInOut("DATA_IN_OUT", A2);
//DcsBios::Switch2Pos rensaButtonCover("RENSA_BUTTON_COVER", A3);
DcsBios::AnalogMultiPos datapanelSelector("DATAPANEL_SELECTOR", A7, 6, (1023/6));
void setup() {
DcsBios::setup();
// pinMode(PanelLight_pin, OUTPUT);
}
void onMainElectricPowerChange(unsigned int newValue) {
if (newValue==0){
PanelLed_Value = 0; }
}
DcsBios::IntegerBuffer mainElectricPowerBuffer(0x460e, 0x4000, 14, onMainElectricPowerChange);
void onPanelLightsChange(unsigned int newValue) {
PanelLed_Value = map(newValue, 0, 65535, 0, 200);
analogWrite(PanelLight_pin, PanelLed_Value);
}
DcsBios::IntegerBuffer panelLightsBuffer(0x460a, 0xffff, 0, onPanelLightsChange);
void loop() {
DcsBios::loop();
}So this row:
DcsBios::AnalogMultiPos datapanelSelector(“DATAPANEL_SELECTOR”, A7, 6, (1023/6));
Reads the value and divide it into the six positions.
Edit: 7 positions
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Wow thanks @outbaxx. Could hug you but it is corona. So a elbowbump has to suffice.
Even got to se how you did the led code you talked about on youtube gonna read up on what a uln2003 is for now my leds are on or off ^^
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I made these,(red & blue) they make the rotary switches into voltage dividers and i only use one pin in the Nano for each. I think I use 100Ohm resistors and a capacitor, the capacitor is there so it won’t read zero between switches.
Here is another picture of my project, left side start to actually look like a cockpit
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Very nice, very nice indeed!
Aaaah! starburst LED segments! I love those things ridiculously much!
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Both the data and the destination display are working now. It was harder than expected, since the displays need different libraries that dont work well together
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Nice a TM chip! I have a few TM 1638 chips that function as a input for a CIVA-IV. Lovely little chips with what you can do with them .
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It’s done 
https://imgur.com/SsVCQMY
I’m pretty happy how it turned out, everything works (albeit the data display has a small delay) and setting up the buttons in DCS has been very easy. It shows up as a generic joystick, so it can be used in other games as well.
https://imgur.com/wJIN14r
20 cent for scale (lol), it really feels big
https://imgur.com/UKRwKeH
The panel itself
https://imgur.com/RF2hp3j
Some wiring, turned into a rat’s nest in the end…
In action:
https://imgur.com/LzLAj5Q
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Very nice, @NukaBoy!
Well done!
I wish I could fit a full size Viggen pit… Would be so much fun to build it!
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Nice job @NukaBoy Was it hard doing coding for the leds? Did u get the boards for the led displays or did u custom made for them.
Update on my part is that i gave up on the analog value rotaryknob. I was having trouble finding the reason for it not working.
I found that it was not just to add that line from @outbaxx . i also had to edit the main dcs bios library.
Again i looked to the forums and found this which i guess is the same thing.
tekadept’s post was very helpful
Which tells that the DcsBios::AnalogMultiPos is not in the library and goes on to tell how to do it.
BUT! it kept on not working for me i kept looking in to it. testing the hardware maybe was wrong…
Went on “vaycay” xD … now i went back again to check and found out that the rotaryswitch had just gotten a loose pad on the center pin. But i also decided to just go with DCS.bios tip and do a Read low value on pin to know which is selected. So now i have 2 pins left on the micro 
^
Gonna get a new one and start work on the navpanel with the waypointselectors, and also the ledscreens will be connected to that micro.
I have been thinking on moving to the Leobodnar card for the rotaryswitch part, but gonna try the arduino way first to see than if it is too much of a hassle ill move too leobodnar for those.
So i tried the datapanel and it is working fine with this code 
#define DCSBIOS_DEFAULT_SERIAL
#include <Keypad.h>
#include “DcsBios.h”/* paste code snippets from the reference documentation here */
DcsBios::Switch2Pos dataInOut(“DATA_IN_OUT”, A5, true); //set a pin for the in out switch
const byte datapanelSelectorPins[13] = {6, 7, 8, 9, 10, 11, 12};
DcsBios::SwitchMultiPos datapanelSelector(“DATAPANEL_SELECTOR”, datapanelSelectorPins, 13);const byte ROWS = 3; //four rows
const byte COLS = 4; //three columns
char keys[ROWS][COLS] = {
{‘7’,‘4’,‘1’,‘0’},
{‘8’,‘5’,‘2’,‘A’},
{‘9’,‘6’,‘3’},};
byte rowPins[ROWS] = {A3, A2, A4}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {2, 3, 4, 5}; //connect to the column pinouts of the keypadKeypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
void setup() {
DcsBios::setup();
keypad.addEventListener(keypadEvent); // Add an event listener.
keypad.setHoldTime(100); // Default is 1000mS
keypad.setDebounceTime(50); // Default is 50mS
Serial.begin(9600);
}void loop() {
DcsBios::loop();
char key = keypad.getKey();
}void keypadEvent(KeypadEvent KEY){
switch (keypad.getState()) { // gives PRESSED, HOLD or RELEASED
case PRESSED: // If someone finds a better solution as switch - case: Let me know, please
switch(KEY) { // following commands are fired unique if PRESSED
//CDU
case ‘1’: sendDcsBiosMessage(“DATAPANEL_KEY_1”, “1”); break;
case ‘2’: sendDcsBiosMessage(“DATAPANEL_KEY_2”, “1”); break;
case ‘3’: sendDcsBiosMessage(“DATAPANEL_KEY_3”, “1”); break;
case ‘4’: sendDcsBiosMessage(“DATAPANEL_KEY_4”, “1”); break;
case ‘5’: sendDcsBiosMessage(“DATAPANEL_KEY_5”, “1”); break;
case ‘6’: sendDcsBiosMessage(“DATAPANEL_KEY_6”, “1”); break;
case ‘7’: sendDcsBiosMessage(“DATAPANEL_KEY_7”, “1”); break;
case ‘8’: sendDcsBiosMessage(“DATAPANEL_KEY_8”, “1”); break;
case ‘9’: sendDcsBiosMessage(“DATAPANEL_KEY_9”, “1”); break;
case ‘0’: sendDcsBiosMessage(“DATAPANEL_KEY_0”, “1”); break;
case ‘A’: sendDcsBiosMessage(“CK37_RENSA_CLEAR”, “1”); break;}}
switch (keypad.getState()){ // gives PRESSED, HOLD or RELEASEDcase RELEASED:
switch(KEY) { // Released KEYs or Neutral Rockers signal is sent
//CDU
case ‘1’: sendDcsBiosMessage(“DATAPANEL_KEY_1”, “0”); break;
case ‘2’: sendDcsBiosMessage(“DATAPANEL_KEY_2”, “0”); break;
case ‘3’: sendDcsBiosMessage(“DATAPANEL_KEY_3”, “0”); break;
case ‘4’: sendDcsBiosMessage(“DATAPANEL_KEY_4”, “0”); break;
case ‘5’: sendDcsBiosMessage(“DATAPANEL_KEY_5”, “0”); break;
case ‘6’: sendDcsBiosMessage(“DATAPANEL_KEY_6”, “0”); break;
case ‘7’: sendDcsBiosMessage(“DATAPANEL_KEY_7”, “0”); break;
case ‘8’: sendDcsBiosMessage(“DATAPANEL_KEY_8”, “0”); break;
case ‘9’: sendDcsBiosMessage(“DATAPANEL_KEY_9”, “0”); break;
case ‘0’: sendDcsBiosMessage(“DATAPANEL_KEY_0”, “0”); break;
case ‘A’: sendDcsBiosMessage(“CK37_RENSA_CLEAR”, “0”); break;}}
}
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I looked for ready-made LEDs with boards since i didnt need any special size or form
Really nice! How did you make that throttle?
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How did you guys manage to make those well-looking buttons and switch?