MobiFlight Community Support

Good morning dear friends,
I am a good point with my 13 mega-card well.
At the moment everything works well and I solved the problems of USB connection through 3 HUB powered with all the common ground.
using 2 driving positions, 2 input buttons are pressed simultaneously and this causes an MF block.
this also happens with inputs referring to two different mega cards.
if this problem is normal I will make sure NOT to use 2 simultaneous inputs.
maybe there is a solution (time polling ??).
Thanks for all.

Hi

In theory this should work fine. Sebastian change that logic somewhere between 7.0 and 7.5 .

Basicly you can use endless number of switches in ON position same time (latching switches e.g.). The only problem is if you press 2 Inputs exactly the same time. this "can" be problematic whatever it not should be so.

Let me ask.... Where do you need this ? Maybe we find a better solution here.

A good hint is for example to work with a trick.... You use only one switch..... But you create 2 Configs ( both use same switch as input) and send each a command.
This prevent of pressing 2 Buttons same time but already sending two different commands.

Other idea.... Experiment with Polling rate.... Increase/decrease and test.... Maybe you just got a bad rate and a other will work more profitable !

Thanks pizman for your answer.
my homecockpit is dualside.
for this we can pilot two people simultaneously.
for this it is possible to press two buttons at the same time.
I am aware of this problem and do not pretend that it can be solved.
I tried to change the polling time but I don't see any variation of the problem.
despite all this I am very happy with the results that I have achieved with MOBIFLIGHT in two years of hard work thanks to your help.
In reality, the biggest problem I faced was managing USB users; I recently solved this problem using 3 HUB 3.0 powered with ground shared by the PC and all the power supplies.
https://www.youtube.com/watch?v=HJgAMSV9zl4
Thanks for all.

In theory i understand your problem..... So we talk about all Button/switches/encoders and not about a single situation we can avoid with a trick or logic.

I wondering how often this happens ??
Whatever if 2 Pilots working in a cockpit normaly always one is working the other is monitoring.... So for example at electrical startup not both activate switches in overhead..... Only one will do and the other observe this.... Also inflight.... Like one got the controlls and the other got radios.
Sure it can happen both did there work..... For example one will set his FMC and the other will change settings on his EFIS e.g.
But i would say its a rare coincidence if 2 Inputs comes exactly the same time.
And finaly its more rare this happens with a latching switch..... For example one Guy press a momentary button and the other pilot turn a encoder.... Here it´s no mater if one detent of Encoder is not executed.... And if button is not pressed we instinctiv press it again... But here is no "wrong condition" of a latching switch overall.

Summary:
At first there must be a situation 2 Inputs came same time (rare but happen sometimes)
Then one (or two) of the Inputs must be a Latching Switch to get in real trouble ( more rare)
Finaly there is a chance of 50/50 what Input is miss.... Again in theroy only every second problem is critical ( if only one latching switch was involved)
So the only Situation we got a 100% Issue is if 2 latching switches are used exactly same millisecond.... (verry rare)

May you can give me a number so i know how deep this problem is..... In a normal flight of maybe 1-2 Hours with Powerup and Shoutdown.... How often did it happen that a Latching Switch is wrong in case of those double commands ?

Thank you very much for the explanation.
unfortunately, it seems incredible, I have no friend in Rome who is a pilot or simmer !!
so I don't know how to do double pilot tests.
I will try to find a solution for testing and let you know the results.