homepage Forums Technology Flight Sim Pit Builders MMJoy/MMjoy2 - Set your own USB controller with a cheap Arduino

Hello.-

I am thinking of building a radio stack for microsfot flight simulator.

On thi sit would be cool to have a rotary encoder, to tune frequency up and down.

But reading up on the encoders, I am getting confused.

How do they work with MMJoy2 ? How do I need to wire them up ?

Hope someone can help.

Thank you

Vegard

Hei !

For the benefits of others, I will use English

Yes, I have buildt button matrixes before.

I am about to order these encoders :

http://www.ebay.com/itm/151753076315

Not decided on knobs yet, not sure what to search for, since the shaft is "D" shaped, not round or knurled ...

Just cant et my head around how to connect them, is it like normal buttons ? How do they actually work ?

Any help appreciated

Vegard

Ok, I think I get it. I see in MMJoy that there is an entry called Encoders. The numbers in there, corresponds with the numbers in Matrix ?
I am not still clear on the difference between the reference that is on "Joystick", and the numbers selected in the pulldown.....

Let me try to explain how I think :

In the matrix, each buttons get a number. This number is inserted in the appropriate place under "Joystick", "Encoder", "HAT", etc, is
that correct ? Only use each entry from the matrix in one place ?

Oh, also, I dont see where to input delay ?


Vegard

I am running a older version of MMJoy2 than you, and I cant find the one you have, or any version newer than 2015.

The newest version I found, is 20150405, and that one doesnt have any delay settings etc.

Can you direct me to download link ?

Vegard

Ok, thank you, after I wrote the last message, then I found the same version as you so kindly posted a link to. I have downloaded it,
but havent installed the new firmware yet.

I have been busy, just finished converting a old set of CH Pro Pedals from gameport to USB; working like a charm now !

Next job, maybe convert the old CH Yoke, also from gameport to USB. Must dissasemble and check what is needed to convert
inside it.

So, you have an non-official version of MMJoy ? How do you get that ?

Vegard

He is "Beta Tester".

Great, thanks, I will

Question :

What is the best way to create a mixed matrix, using buttons and encoders ?

Reason I ask, I am trying to build a interface using the full capabilities of the MMJOy and a Micro Pro card. I dont
want to start messing with shift registers etc...

Here is what I have in mind :

I have a CH Pro yoke and pedals set. Pedals are 3 axis, yoke is 5 axis ( rudder, elevator, throttle quadrant).

So, that means I have 8 analog inputs, leaving me 10 for the matrix. That leaves me with max 25 buttons, in a 5x5 matrix.

I am trying to build a easy matrix interface board on a perfboard, and want to try to make it as clean as possible. With the diodes going the
opposite way for encoders, I see a lot of possibilities for confusion ...

Any hints and ideas ?

Also considering getting a secondary Micro Pro, but havent decided yet. Maybe that makes it easier, if I can separate maybe axis and buttons on
2 different controllers.

Vegard

Eddie123
you can use any diodes.

sample from Vladimir@"China":

Thanks for the answer.

Not sure my question came out right.

My consern is when I look at the pictures on your site, on how to connect buttons and encoders,
the diodes for the encoders point the opposite way of how they are connected to buttons.

Do I have to take this into consideration when building the matrix printboard, or is that just
a matter of how I connect the wires from the matrix to the encoders / buttons ?

Thank you

Vegard

hardware no matter what you connect to "point" - button, switch, encoder channel a or b. all differencs starts at firmware and configuration setup.
for "point" I mean one input pin of shifts reg, or one intersection row/columns button matrix.

Ok, think i get it.

Just have to solder the matrix board, and then wait for my encoders to arrive

Hi everyone, i found the number

Hello.

Looking into connecting loads of buttons using shift registers.

So far I think I have figured out that the main difference between the 74HC165 and the 4021 is that one is
active high, the other low, right ?

So, I presume the MMJoy converts this automatically, so there is really no difference which I use ?

Do anyone have a proper draeing of how to connect up the shift registers ? What do I need besides pullup resistors, etc?

Thank you

Vegard

I use the gammon pages a lot.

Switches, pullups
http://www.gammon.com.au/forum/?id=11955

Shift registers
http://www.gammon.com.au/forum/?id=11979

Hello.

Thank you for your reply, what I read from the posts you posted is more or less what I have read before.

But now I am confused. In those posts, it refers to both pull-up and pull-down resistors. Which is best, or is
there one type I need specifically to use with MMJoy ?

What about other components, do I need anything else ?

Vegard

If your switches are connected directly to the arduino, you can use the internal pull up resistors so you do not need external components or resistors.
If you use other parts like shift registers, external resistors may be needed but you need to read the datasheets of these components. For example, an mcp23017 IO expanders has pullups, but a 74hc595 shift register does not.

Pullup is easier than pull down, because you only need a ground signal.

I am not familiar with mmjoy, sorry.

Hello all. I've recieved some halls from China. I supposedly being A1321EUA... They have G321 540 part number stamped on them. They go from 11 to 995 at 10 bit res. But they aren't stable. Without a magnet it flickers from 510~530, they get stable with a filter of x14. Should I use them anyway?.
I have old Allegro UGN3503 and they are rock steady without filter but they go from 200 up to 800. What would be best to use?

Thank you all.

Ps: waiting for tle5011... Bought to china too, I guess they will be fake copy too. 1st time buyer incompetency.

for shift registers mmjoy need a pull-up.

Hello.

Does anyone here have some layout ( Gerber) files for shift register circuits for MMJoy ?

Or maybe someone has some spare cards, maybe I can buy them ?

If I only get the files, are there any cheap manufacturers of small quantities of circuit boards ?

Thank you

Vegard

You can buy shift registers here:

https://oshpark.com/profiles/Debolestis

There are Shift register 8, 16, 24 and 32 bit. You can order PCB and solder everything later. It takes 3-4 weeks for PCB to arrive with free shipping.

You can see photos here:

http://forums.eagle.ru/showthread.php?t=120049&page=9