Help me understand Multiplexing, please

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interestingfellow
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Help me understand Multiplexing, please

Post by interestingfellow »

I actually think I have 2 questions:
Q1) the following are the settings for my heli throttle including throttle hold

line 1 Ch1 Thr 100 CV3 !RUD >>>This is saying to use CV3 when THR is on
line 2 += Thr 100 CV2 !THR >>>This is saying to add CV2 when !THR is on????
line3 := MAX -100 ELE >>>if ELE is on then THR is MAX -100

So, does "+=" mean to add the value of line 2 to the line 1? Shouldn't I be using ":=" to replace line 1 with line 2?


Q2)I didn't realize i may not have had it set up how I wanted until i went to reuse and modify this setup for an aggressive little Assault 100 I wanted to choose between TH,CV3 (straight curve on Thr stick), CV2 100 ("idle up"), and CV2 80 (%80 of "idle up") for Thr/head speed control

I think what I want is this:

line 1 Ch1 Thr 100 CV3 !RUD >>>if !RUD is on, use CV3 100 regardless of THR/!THR
line 2 += Thr 100 CV2 !THR >>>if !RUD is off, and !THR is on, I want to use just CV2 100
line 3 += Thr 80 CV2 THR >>>If !RUD is off, and THR is on, I want to use just CV2 80
line 4:= MAX -100 ELE >>>if ELE is on then THR is MAX -100 no matter what


Do I want to use ":=" in place of "+="? I still don't understand the difference, even after reading ER9x manual and Open-tx university.

Thanks, again!!!!

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jhsa
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Re: Help me understand Multiplexing, please

Post by jhsa »

"ADD", will add the value of the second mix to the mix(es) above.
So, take for example

Ch01 -80% MAX (This sets the value of the mix at -80%)

Now add a mix below
+= 20% MAX switch (THR)

When you turn the THR switch ON, you will ADD the value of the mix below to the mix above. So the result will be the output value of the channel. -80 + 20 = -60
The channel will output -80% when the switch is OFF, and -60% when the switch is ON.

REPLACE, as the name indicates, will replace the value of all the mixing above it in the same channel.

Ch3 100% Thr (A normal throttle mix)
:= -100% MAX Switch (THR)

When the THR switch is OFF the second mix has no effect on the channel, but when it is ON, will replace the value of the mix above with its own value.
So with the switch OFF, the output of the channel is whatever value the Thr stick has, but when you turn the switch is ON, it will output -100%, no matter what you do with the Thr stick..

By the way, the er9x manual explains it very well. Don't know about the other documentation as I didn't read it.

João


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interestingfellow
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Re: Help me understand Multiplexing, please

Post by interestingfellow »

It does explain it well, but you know how sometimes you aren't %100 sure and you just need a trusted voice to reassure you....
That was you. Thank you, again!
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jhsa
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Re: Help me understand Multiplexing, please

Post by jhsa »

Well, I co-wrote the er9x manual :mrgreen:

João
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fredmillard
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Re: Help me understand Multiplexing, please

Post by fredmillard »

Dear Jhansi, hopefully you can explain to me how to command the timer to stop (pause) as it dies when set to ThS mode in model setup. I wish to have the time activate when the throttle is increased to 25% and pause via the input of a switch, then re activate upon the increase of the throttle stick, and so on. I am a helicopter pilot. I'm in the midst of moving from an order JR )Spektrum based) radio to the Taranis X9D plus. It seems simple enough to do but I can't figure out the command to pause the timer. Thanks for any assistance you can provide. Best regards. Fred

interestingfellow
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Re: Help me understand Multiplexing, please

Post by interestingfellow »

you might have to use setup different channel that includes the Thr and the switch, OR a custom switch
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jhsa
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Re: Help me understand Multiplexing, please

Post by jhsa »

Well, the Taranis use openTX as stock firmware.. It's been a long time since I used openTX. I use ersky9x. I really don't know how the timers work in OpenTX, or which functions are available to trigger them.. I guess this one will have to be explained by some other user :) Or read the openTX manual, I'm sure it explains it ;)

João
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bob195558
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Re: Help me understand Multiplexing, please

Post by bob195558 »

Or flash with erSky9x on Taranis, find here: (http://www.er9x.com/).

Bob B.
Er9x on 9x radio, with Smartieparts Programmer and TelemetrEZ Board.
ErSky9x on Taranis, Sky9x, 9Xtreme radios.
3D-Printing: (https://openrcforums.com/forum/viewforum.php?f=129).

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