Trimming and curves...

I am new in Devo so, first, sorry if this is already discussed or maybe well known thing but I could not find answer... So sorry if I'm repeating question.

So, here is my problem: I have Devo 7e with additional modules and Deviation firmware 5.0.0) and I have question regarding trims. One of my quads (original Bayangtoys X9) started to drift a bit backward and I need to trim it. When I do this using trim on stock controller and uses stock controler to fly, it flys fine in all 3 rates . But when I use trim in Devo, trim values used on ELE chanel affect quad different and depends on selected flying rate - the reason is because model I use (can't remember where I downloaded it but it has also 3 rates and trim available on channels) uses different curves to "simulate" rates so trim values that work fine for one curve does not work for another (I think that's the reason).

Is there any solution which will cause trim on Devo to work the same way on all curves like it works on stock controller on all rates so that Devo curves does not affect trimming (somehow force Devo to trim before applying curve - that will maybe help)? Or maybe there is other way to correct drift in Devo?

Thanks for help in advance.

Sorry for bumping thread, but no help with trimming?

I am aware that Devo has no rates - rates are simulated with different curves and scales (as I stated in first post). And problem is that when I use diferent curve/scale settings, same trims value behaves differently - when I trim it to stay stable in "low rate" scale, the same trim in "high rate" scale does not help. And when I trim it the same way in stock controller, it stays stable no matter what rate I select.
That's why I thought that Devo trims after applying every other settings and you conmfirmed that.So, when trim values are applied, they will cause different result depending on curves in mixers.

Also, I am aware that trimming is not solution for drifting - but my X9 drifts no matter how much I calibrated it - and I did it several times on 100% flat surface + I usually calibrate and avoid trim buttons but it keep drift to back and only trimming helps. Maybe motors are starting to go bad etc.but trimming is only way I can stabilize it for now.

I attached INI - ignore trim values (I experimented with all trim buttons because I was not sure it works so values are now messed up for all directions), and also ignore Virt1 channel I created for deadband values (I have problem with centering elevator stick which I soved with deadband and I also removed that to be sure that it does not cause trim to behave diferently but also does not help).

So, the point is - X9 drifts completely the same with Devo and with stock controller. Trimming with stock controller solve problem on all rates while trim on Devo solve problem only for currently active curve - by switching to another one, trim values force quad to behave differenlty. And if Devo apply trims on final values, looks like there is no solution except if there is a way I can have different trim values for different curves somehow...

FDR wrote:

silverAG wrote: That's why I thought that Devo trims after applying every other settings and you conmfirmed that.So, when trim values are applied, they will cause different result depending on curves in mixers.

No. That's the point: the same trim value is applied no matter of the stick position or curves (which is only a multiplication on the stick position), because it should correct the same amount of drift.

Hm. I am obviously thinking wrong. OK - if trim is at end of "curve chain" (sort to speak ), it will affect behaviour always in the same way no matter what curve is set before it?

FDR wrote: However if you need different trims for the different rates, set your rate switch (in this case SW B0) as the switch on the trim setup pages, and you will have independent trim values for all the switch states, i.e for all your different rates.

Need to try that. Thanks for tip!

FDR wrote: BTW I don't see anything wrong in your ini, only the Virt1 source was strange. While the mux type is replace on all pages of the complex mixer, the trims shouldn't affect other pages...

As I said, Virt1 is used for setting deadband before other curves but I turned deadband off to test does it affect trim problems (and it does not).
I definitelly have different behaviour of the same trim value when I switch to different curve with this INI. But if the same trim value should work the fine no matter what curve I used, I'll experiment more as soon as I find time.Thanks for reply!

I have problems (I mentioned that in a thread) with elevators stick (calibraton does not help - it is maybe pot problem but so far it is too complex for me to remove gimbal and try to fix it so I used deadband on ELE and set it to virt1 and used as a source for ELE). And with deadband on virt1 (then I have zero value as a source for ELE channel where I use trim) or without (when I have 7 instead 0 at center position - as in INI attached in previous posts) trim problem is the same,

I just tested trims on Eachine H8 by putting some weight to have drift to right side to exclude elevator inprecision as a problem (using the same INI - it has the same protocol). I have no problem with AIL (when it is centered, it is 0 and no deadband need) but trimming to the left reacts completely the same as for trimming ELE on X9 - with left/right trim button I can stabilize H8 but when I change curve (rate) it start driftting to the right until I put back curve where I set trim. Stock TX works OK - when I trim it stays trimmed in all rates. And, to emphasize, I have no problem with aileron stick poitions (0 as I said - no deadband need and perfectly centered).

Strange. But if understandt how to assign trim values for various mixer setings as you suggested in few previous posts. That might solve it. Need to try that...