ON-ON switch question. | MobiFlight | Page 1

pseudo quail Oct 29, 2024, 11:28 AM

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My first question on this discord server. I am almost finishing my hardware for my Cessna pit. Now planning the Arduino pin layout.
I use a ON-ON switch for let’s say the MASTER_ALT. Now I can use 2 pins and use only ON PRESS for MASTER_ALT_ON and MASTER_ALT_OFF or 1 pin and then ON Press MASTER_ALT_ON and ON release MASTER_ALT_OFF.
Question: would there be any difference in behaviour in the sim? What is the preferred method? I am thinking on probably synchronisation problems.
Because I am in the planning fase I do not have an Arduino yet to experiment. Just planning now how much cards I need.

old musk Oct 29, 2024, 12:48 PM

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There is no difference in behavior in the sim by using two pins versus one pin. I would always prefer to use the one pin method. Arduino pins are a scarce commodity.

manic sierra Oct 29, 2024, 3:46 PM

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I agree with Jaimie

mortal eagle Oct 29, 2024, 3:59 PM

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@pseudo quail your name is familiar. Did you build with fsbus years ago?

pseudo quail Oct 29, 2024, 4:00 PM

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Yes that’s indeed the case. Still have it in my B777. But after the Cessna is ready I will redo that one with arduino /MB too

mortal eagle Oct 29, 2024, 4:00 PM

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oh boy, wow

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look

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https://www.avsim.com/forums/topic/132643-fsbus-com-and-fsbus-key-question/

The AVSIM Community

FSBUS com and FSBUS key question

I notice 7 possibilities on the fsbus com pcb to connect the other pcb's. Does any body know wheter it is possible to use the 7 ports in any combination you like?So for example can I use 2 fsbus keys PCB's together with 2 fsbus displays pcb's? Or can I use just one of every kind?Thanks for any he...

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what I found when I googled

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we had a chat in 2003

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both of our avsim accounts are inactive for years I bet

pseudo quail Oct 29, 2024, 4:03 PM

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mortal eagle both of our avsim accounts are inactive for years I bet

You have a very good memory. Haven,t been on Avsim for years. Just retired now and having time again for sim building.

mortal eagle Oct 29, 2024, 4:03 PM

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yeah the name rang some bell, maybe I had looked at your 777 project for ideas back then

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I was also away from sims for a long while until msfs2020 came out

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but hey, the ON-ON switch works with just one switch too

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you can also wire it as two switches, but there is an option to "auto retrigger" on startup

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which basically goes through the sync of each switch

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so in case your plane and physical switch are in different state, starting mobiflight should trigger the physical switch state once for the sim

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this is optional setting

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so as long as your switch functions for sim are "ON" and "OFF" type, for OnPress and OnRelease it should work the right way around as soon as you operate a switch anyway

pseudo quail Oct 29, 2024, 4:11 PM

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Ah good to know. I was indeed thinking about synchronisation problems. Suppose you have a start situation 10 miles on final. The gear lever is physically down and then you do a go around and put the gear up. Then you reset the situation file for a second try. Then you have a sync problem. But as MB does not restart your solution will not work. I have seen a solution without using MB, but with a lua file and a ino file (from arduino IDE). But that would be a lot of work for the complete cockpit. I am still wondering whether this would be possible with MB. Just ordered the boards from Sebastian. So going to explore.

mortal eagle Oct 29, 2024, 4:11 PM

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but if you use a toggle type event, then of course thing can get out of sync

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but generally you want on/off events for toggle switches and toggle events for push buttons, as weird as it sounds 🙂

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so if you use "Gear up" event for gear switch and set the OnPress and OnRelease correctly, it should work

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the retrigger means mobiflight goes through each switch and sends and event for the current state of each

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so if you for example start a flight in the air and your gear is up in the sim, as it is

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but your gear switch is down in the physical sim gear lever

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if you have retrigger disabled, nothing will happen until you touch the gear switch, and move it up, but at that point it will send a "gear up" event and its already up in the sim

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but if you have retrigger ON, then your gear would go down if you start mobiflight while the plane is in the air

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it sounds way more complicated ot explain this than it is

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so yeah, in your scenario you would do it so that when you restart your scenario for 10 mile final, you would lift the gear lever up while the sim loads I guess

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you would not want to lower the gear anyway, so the only option is to lift the lever up. And if MF is running nothing would happen as you would just get a gear up event which should not do nothing

pseudo quail Oct 29, 2024, 4:19 PM

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Thanks for all the info. I am going to experiment with all this.

#ON-ON switch question.