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I have found an answer to my own question.
The main "volume control" mix is described here: http://rc-soar.com/opentx/setups/adjuster/adjuster.htm

I will put up a screenshot of my final mix tomorrow.
It works good...........controlled by S1 rotary knob.

...............................s did you actually program the routines into the Companion and then use the simulator to test them? ....................... Yes I did. I did use that to test your logical switch. Its no longer an EEPE file, they are now saved in OTX format. ............... Fine, that ...

................ I think you need to read up carefully on OpenTX...................... I have been doing that. For a few weeks every night, and some days! It is very different to programming a normal transmitter,................. That much is self evident, even to me! Have you tried working through...

Martin,

If you have this logical switch working as you say, how much problem would it be for you to post a (EEPE?) file for downloading as a template?
I (and other readers) could then import the file into a test model set up and see if I/ they can get it work.

Basically this routine has no direct effect on the servo whatsoever. All it does is sets the throttle channel to -100 no matter where the throttle stick is. Then once switch E is held down for between 3 and 5 seconds AND the throttle stick is fully down it will enable the throttle stick to work aga...

................... The Taranis might be a steep learning curve, but when you have that Eureka moment, you will find out how powerful its programming can be......... I just had one of those kind of moments Joao! I managed to get all 8 servo and switch functions working in my new tug plane using my ...

Ok, than you have solved the problem. The thing is, unless the switching point of the engine killer switch could be programmed, you couldn't use the throttle channel. If you could program the switch to switch at a given pulse from the receiver, then it could be possible to do it using the same chan...

Jim, I am just trying to understand what you want to achieve so we know how to help you :) João Yes, I fully understand. I am trying to set up my Taranis X9D Plus to fly my new tug plane. It is a 1/4 scale Spacewalker. Powered by an internal combustion engine. Two ailerons, two flaps (operated now ...

............................... He did a mechanical implementation with some kind of spring that allows the servo to move further down while the throttle arm is at minimum (Idle). With this he could activate a mechanical switch?? (This isn't very clear to me).................. I never went so far a...

Basically this routine has no direct effect on the servo whatsoever. All it does is sets the throttle channel to -100 no matter where the throttle stick is. Then once switch E is held down for between 3 and 5 seconds AND the throttle stick is fully down it will enable the throttle stick to work aga...

I am not sure what you mean by "band". Maybe your mean range. Correct? I am just a beginner, but I have managed to get flap to elevator compensation mix working ok. Go into the mixes menu, the add another line with a percentage of the flap mix. Something like this: Oopps! I cannot find an ...

Ok Martin. It must still be something I am not seeing or doing right. Thanks for returning to confirm that for me. I am not clear on the principle in terms of the servo signal generated in both states according to switch SE(down). What signal does the servo receive at all states and what signal does...

I must have spent in excess of 6 hours on this one mix, without any sign of success. I have tried it in the transmitter and in Companion in two separate operating systems; Linux Mint 19 and in Win7. Same result all round. I have tried juggling parameters, entering offsets and other little changes. N...

Joao, I also am not a code writer and not about to become one any day soon. I already have a life! So in order for me to consider this project for my extra servo needs, I would like to have access to open source code to flash (preferably) arduino nano. I have them in stock already. Is there code ava...

Joao,
Thanks for alerting me to this thread of yours.
I will read it as soon as I get some time.
My first thoughts are, is it possible to use an Arduino nano board for this?
(Maybe not).

Jim.

Hi Jim Look at L02. You have put !L03 each time instead of L03. The ! in front means, L03 is not true. You might need to check everything, as sometimes ! is used and sometimes not. .......................... Martin, Got that. I have corrected it and learned something along the way. I have triple ch...

Jim, are you able to do soldering and program Microcontroller chips or arduino boards?.................. Yes Joao. I have made some arduino projects before. Life long electronics experience. Also, are all channels used for control surfaces, or are some being used for other stuff like lights for exa...

Hi Jim Almost sure the error is in a little bit you highlighted. ...... shows a "+=" in the place where yours shows ":=".... This is the multiplex feature on the mixer. The "+=" means add the line to the previous one. The ":= " means replace.....................

Very good Martin, thanks for the reply. I will try it again now.

Screenshots of my Entries (following instructions @ page 33 in Section 9.......) shown in Companion.

Jim Have a look at my documentation on this forum. https://openrcforums.com/forum/viewtopic.php?f=45&t=8724 ................................ Martin Martin, Once again, its a very well presented guide you provide. However, I did follow the instructions on page 33 very carefully, but could not ge...

I would choose to expand the number of channels. For the price of a receiver or if posdible an Sbus converter you cab hardly make any mechanical changes Thanks for that suggestion tonnie. That would be a good solution too. However, I am not at all conversant with the Sbus system and would need to l...

Jim Have a look at my documentation on this forum. https://openrcforums.com/forum/viewtopic.php?f=45&t=8724 If you go to the How To part 1 section there is a throttle cut there. .................. Excellent explanation, thank you very much!. I thought that's how it could be done, but I am total...

I have run out of channels and would like to set up a logical switch to operate ignition cut. (Throttle cut). I have an opto switch for that function in my model. Can someone describe how I might set this up in my new Taranis X9D plus? I have never programmed a logical switch before. Edit: I have st...

I am in the practice of selecting the flap to elevator mix before flying a flapped glider or power plane, in my formerly used Futaba 8U. I assume that this is similarly possible using my new Taranis 9XD Plus. Is the best practice to select the window I show in the attached screenshot before launchin...

......................... For example on my IC powered models, I use a pot to tune the engine idle, instead of the trim switch. I find it quicker to set by the right amount, when needed ;) João That's a good idea Joao. I will use it when setting up my new (almost finished) tug plane. (In OpenTX 2.2...

Rolf wrote: ↑Mon May 13, 2019 11:41 am I am not Andrew, but I bought mine here:
https://de.aliexpress.com/item/STM32F20 ... 4c4dIPhCDL

Not sure though if its a copy, for that price.

Rolf

Thanks Rolf.
Incredibly cheap!

I just noticed this is a very old thread.
However, I got it working on the desk straight away.
You must have had it sorted by now?

How can I mix a percentage of down elevator as the throttle is is increased? I tried this mix without any luck CH02 : ELV [IO2] ELV Weight (+100) +=[IO3] THR Weight (-17%) NoTrim Diff (100%) [DWNELV] I am a very newcomer to OpenTx. But what stands out to me in the above is the selection of "Di...

Where did you buy the chip(s) Andrew?