MobiFlight Community Support

hello
i want to use multi group for in put or output shift register
for example if was use pin
22 = LATCH
23 = CLOCK
than describe in mobiflight
after another group for shift register i have to use again *LATCH* and * CLOCK* pin
so i need to describe them to another arduino pin
i want to use them again same pin on 22 and 23
But after use them 1 time, i cant select them again .
same problem again input shifter
is possible to fix _?
thanks
http://robots.freehostia.com/Software/ShiftRegister/ShiftRegisterBody.html

Hi

At first.
As i know you can build a chain of those Registers. So the whole chain is handled by the Pins you select there.
If you create another Shift Register ( or chain) these will need (currently) its own individual Pins also for Clock !

We have a discussion in the past to allow sharing e.g. the Clock Pin more global.

E.g. for Max7219 we got the same logic.
You can use 4 Max Devices on a Mega.... Each can also be a chain of up to 8 Chips in a row.
BUT
Each Device got its own CLK Pin.... Technical we could share it but we decide ( for the moment) to NOT do this !

Simple Argument: Number of Megas is not limmited. So there is no need for us to save e.g. 4 Pins in a setup like yours. Simply buy another Mega. Then you have agaoin 69 new Pins you can use!

***********
Feel free to vote for your idea on our Github.
Or come to Discord and talk to the guys who already ask for this ( Neil and Jaime if i remember right).
Sebastian not say yes.... But maybe meanwhile he looking forward to do this !

Again, I was the one who mainly advocated this. As discussed, there is no real technical or performance reason; the improvement certainly requires a little effort (particularly on the Connector side), but no more than that.

Also, as reminded elsewhere, the decision to either support it or not is basically a matter of personal preference from the MF team, therefore showing interest by upvoting or adding an improvement issue might help to fathom the degree of liking, or need, of a given feature.

Last thing, as I always feel the need to point out, the "add more megas" concept is not always a "best" (or even viable) answer - many people have cockpits which are already assembled, possibly complex, often built with much effort, as well as "box devices" with mechanical constraints. The stake is not always to spare a couple of pins (even though that might prove crucial several times).