How to tune airplanes in INAV?

[@mauritz1774]

I love your speech. The 40% reason to watch your Video. I watch some Videos of things I still know just you explain things so good. Helpful for People not the best in English

[@FPVUniversity]

Thanks! Happy flying!

[@pavelgurenchuk2225]

Если видео будет с субтитрами тебе цены не будет.

[@shadofpv]

Yayyy another tuning video, i’ve been trying for months and months now to help people on fb with understanding pid tuning and other settings, i’m glad to see someone else releasing information on how to do it propperly, especially one of my fave youtubers on my favourite firmware ;) 🎉

[@aaronmarkstaller]

Nice vid love it. What youve added to inav and peoples lives is priceless. Thanks.

[@FPVUniversity]

Thanks! Happy flying!

[@MCsCreations]

Thanks for all the info, Pawel! 😊 Stay safe there with your family! 🖖😊

[@fp-AvERY]

Thank you this was helpful. Also your are very fun to watch. Keep making videos and forget the haters

[@FPVUniversity]

Thanks! Happy flying!

[@JPspinFPV]

I have to ask Pavel, is there a reason to have auto trim on a switch rather than have it always enabled? Will this change the tuning process?

[@Brian-S]

Great question I'm curious as well

[@peterhancox5268]

Yes me too

[@RupesF]

Me three! I have this turned on all this time, as suggested by Painless360... Should we be doing this, or avoiding the practice, for the best flying plane?

[@gabrielalej]

Me too

[@senseisecurityschool9337]

That *is* a great question. Two related advantages come to my mind. First, the trim will be consistent on every flight. This helps make the plane more predictable - it will fly the same today as it did yesterday. A related advantage is that I can check the trim and make sure it's good. That it's trimmed *right*. Once it's good, with the switch off it won't change (and therefore can't get messed up). On the other hand, continuous auto-trim WILL change the trim - and sometimes you want that. If you switch between different sized batteries, the battery is installed in a slightly different position, or you add some accessory the trim needs to change. Continuous auto-trim will automatically take care of that. On a racer, I would want consistent, predictable performance - so I wouldn't want continuous auto-trim. On a experimental plane on which I'm changing things around, I might want continuous auto-trim to keep updating the trim as I change things around.

[@emmanuelsab1095]

great, great, great! many thanks to you

[@travelrideandfly8355]

Nice video ! Just one question … why do we need to manually save the settings for Autotune ? In my OSD i always see the “settings saved” message automatically after landing in the flight summary screen. (I have continuous trim aircraft setting on) Do i still need to manually save anything by stick commands ? Thx, Florin

[@mhk1058]

Thanks a million... would be good to have something up to date on how to use Auto Level Trim mode correctly, can't seem to find anything.

[@BrainDeadEngineering]

Great Intel ! In INAV 7.x I believe disarm will auto saves setting now ? I do see in OSD a flag...saving settings . True ?

[@wingsmh27]

Great information, for happy flying 🪽 🎉

[@FPVUniversity]

Happy flying!

[@andyschmid7259]

Excellent, works great!

[@qt1qg]

Reflex setup is the same thing they call "trimming", that needs to be done after every flight and some times in the flight(I think that should apply to only to planes without flight controller, since PIDs will adjust its position to match the trajectory they expect)?

[@TheDroneNerd]

So the tunes will be saved automatically after landing? I keep seeing people mention that you have to know the stick command in order to save the auto tune/trim.

[@WernerBeroux]

I'll probably wait for iNav8 before manually tuning PID. I recall you suggested to increase I gains before the maiden. I did and it worked but wondering if you usually reduce it back to the "profile 1 default" values after

[@FPVUniversity]

No, I usually keep it there

[@maddercat]

I tried to autotune it but it still had a lot of bouncing around, especially in the wind, I manually tuned it and increased the P term and it flew straight finally and eliminated the bounciness but when i rolled it, it went into pitch oscillations and I almost crashed. Any ideas what I should do?

[@TheTuterTieuli]

how much should i rise the I gains ?

[@ossamanyadi1919]

Hi, can you possibly explain to me why half the servos don't work in my FC Matek? It reads them on INAV but they don't work

[@vitorhugolalanda1978]

Hi could you provid some help? I did my first inav 5.1 flighrt 2 years ago...I just tryed auto lounch, no auto trim no auto tune done. After using Mr. D. tool to migalrate to version 6.0, I don't know why, i was not hable to do the migration. So I tryed inav 7.0, finaly it worked. But am I missing somthin? Because on message line it shows: unable to arm, disable navigation first. I have all my swichs on neutral position. I can not accese the osd menu using sticks. Ehat have i done wrong? Regards Vítor Lalanda

[@FPVMedias]

Thanks Pavel! Useful and funny one. I like it 👌

[@FPVUniversity]

Thanks! Happy flying!

[@alainrac56]

Thanks for your great assistance for beginners! I didn't understand well how to use the autotrim, when flying acro, do you have to push or pull the stick to maintain the altitude before to switch autotrim then wait 2 seconds and release the stick? what is the proper sequence? I am also confused with acro mode, as it is not supposed to act on pitch axis to maintain altitude...when I first trim a new model to fly strait on manual mode, then switch to acro mode, then, the model pitch down...what did I miss?

[@DZARO]

Does AUTOTUNE actually tune the P, I, and D term or does it only tune the FF and RATE? As far as I know, P, I and D tuning has to be done manually in INAV7.

[@WinstonSmith1984]

Thanks. I heard nothing about yaw in the autotune procedure. What should we do to get the best yaw tune for planes with a rudder? Fly alternating wings level circles?

[@festerbestertester4315]

how can I see the [Members only] Should you use INAV mag-less navigation? Video

[@rgglenn150]

Can you use quad fpv flight controller for fixed wing? I have a f7 aio

[@adilsongoliveira]

Sure. It may be slightly harder to wire but there's no issues with that.

[@FPVUniversity]

Depends on FC. It has to be able to drive motors and servos on available outputs. Not all can

[@blueskyfpv]

Many can, but you need to check to be sure. As long as the motor outputs can be changed to output servo signals it should work. Check to see if there is a target for your board available in INAV or for information on the manufacturer's website.

[@Freebird_67]

Well done.

[@dabit4840]

Does autotune also work with continuous servo trim enabled? I tried autotuning once but even after stick command after landing the pids were unchanged so I did a manual tune.

[@FPVUniversity]

both are separate things and solve different problems. So yes, they can work together

[@mytubetr6692]

Everything is great! I have a question: there is an impeller model from a cottage manufacturer, highly likely with issues regarding the center of gravity(CG) or aerodynamics. The previous one crashed and had a severe nose-down tendency. The manufacturer, selling a new fuselage + wing, advised raising the elevons up, around 25% of their possible travel upwards. In short, it’s a crooked model, and the manufacturer knows this, but it flies well for people if properly tuned. So, the idea and the question are as follows: is it possible to use the continuous auto trim function to correct the model’s flaws and automatically trim it quickly and properly, if you take off in angle mode? (Ideally, it should try to maintain level flight, even on an untuned model, by adjusting the servos as needed. Then, the continuous auto trim function should kick in and the servos should trim the model, including for manual mode.) After that, on the ground, we adjust the linkages, set the servos to neutral, and reset the trim settings. The model will be mechanically trimmed and stable when the servos are in the neutral position. Will it work? This model is the first step toward flying with Flight Controller, without FPV, for visual flights. Later, it will be upgraded.

[@blueskyfpv]

Great explanation as always: thank you. Is it necessary to land and save after the auto-trim, or can you do the Auto-Tune on the same flight and then save?

[@FPVUniversity]

It theory it is possible but I advise aginst that.

[@blueskyfpv]

@@FPVUniversity OK. Thanks for the clarification. I was also happy to learn that I don't need to focus too much on setting perfect elevon reflex when using a flight controller - one less thing to worry about.

[@jaysonrees738]

This is good information. Thank you for working hard to educate. A bit of opinionated feedback. Not enjoying the quick changing text trend that's going around. If you're set on using it, by all means, but I'll probably go audio only in that case.

[@michelefantini9414]

Hey guys, has anybody experienced a non working modes on inav 7.1.2. When I switch to autotrim o autolaunch, even if they are correctly implemented in the modes and I can see them working on the pc, nothing happens on the plane. The messages of autotrim o autolaunch does not appear in the system message on osd. Any ideas?

[@aaronmarkstaller]

Nice vid. Thanks for all your work 🙌 Hey could you do a vid on elrs airport with inav? I cant get mine to work, 900mhz and do i do msp or telemetry mavlink for the port

[@FPVUniversity]

Airport is in the works

[@CaptainCandycorn]

Thank you for this! I keep forgetting to run these two adaptations on my plane. One thing to note, is it preferred to do all this on a day with minimal wind?

[@FPVUniversity]

Yes, absolutely

[@nucleo1772]

Pawel I have 3s motors in my quadcopter but I want to fly with 4s battery. Any details how to tune this in INAV ( no in radio) ? I know this is posible in betaflight but i prefer INAV ://

[@sidd8310]

Thanks for the detailed explanation, I really should tune some of my planes. Btw, what plane is in the thumbnail? Ty

[@FPVUniversity]

Thats is a Craycle Discover 3D printed one. I have like 2 live streams on this build

[@sidd8310]

@@FPVUniversitywill go have a look. ty

[@billyd78]

Atomrc Penguin

[@Stemplar42]

Thanks for the video, Pawel!, but. What would happen if I fly with permanent Autotrim? Do you recommend it? And in that case, do I have to disable it to do AutoTune?

[@philthayer4087]

Yeah don’t know why he skipped over this

[@20basty]

What is the aircraft in the thumbnail?

[@FPVUniversity]

craycle.com/discover-released/

[@Justin-ms7nd]

What degree of i gains increase would you recommend?

[@FPVUniversity]

Probably around 5 each axis

[@mr_batch]

Good Job Pavel! Thx for that! One Question: You said, you DONT have to save the Autotrim, ist automatically. But, do i really have to save the Autotune manually? Really? Because, after Autotune and landing, the OSD said: "Settings saved" (same as Autotrim). Thanks, happy flyin! Axel

[@FPVUniversity]

yes

[@mr_batch]

@@FPVUniversity thx

[@АндрійПрокопович-х6х]

Thanks

[@tubamanandy2]

I didnt think you had to Save these days ? Thought it was automatic when you dis-armed ?

[@FPVUniversity]

Auto trim yes. Auto tune no

[@badder9492]

Super filmik

[@FPVUniversity]

Dzięki

[@mishka_medvedb]

after inav 2.4, I don't see any good changes, just problems, I went to betafly

[@FPVUniversity]

good for you! Happy flying

[@domgoff999]

You say autotune will determine the correct PID's and the rates. I thought PID's are no longer tuned just rates and feedforward?

[@FPVUniversity]

Let's say it's a simplification as it sets default P and I gains and then determines FF (part of PID process) and rates

[@stevep4131]

I have to say I'm wary about the iNav I term. I keep it at zero and just use P with a touch of D. In other words I go completely against the advice of this video. I fly scale. My planes have wheels and they take off and land on the ground. I sometimes get the impression this is very rare among iNav users. I'm concerned that the I term can get into a "wind-up" problem -- I mean where it attempts to correct for (typically) pitch while the plane is sat on the ground. The elevator control can end up at maximum travel and will take time to return to mid position. In my opinion this could cause a crash the moment the plane leaves the ground. Am I wrong? Always open to advice and ideas!

[@skupper672]

Good question thanks- I am flying scale also with a tail dragger. My approach will be always take off and land in manual than switch to acro in flight. Return to manual for landing. I see no other way because the autotune function really helps with flying characteristics. Thoughts? Whats your setup for a scale maiden with inav?

[@stevep4131]

@@skupper672 My setup for a scale maiden is manual with some guessed PID, FF and rate values. I set I terms to zero to avoid wind-up. Then I'll put it into "cruise mode" (angle + auto level) and do a one-off auto-trim (I avoid continuous auto-trimming because sometimes I want to change trim manually for landings etc). Then I'll put it into acro and do an auto-tune. After the maiden I mostly fly in manual but often use acro for takeoffs and landings when the wind is gusting across the runway (exact opposite to you with the modes!). If its particularly gusty I might just stay in acro. (Acro can save a small model near the ground on a gusty day but can also get in the way of aerobatics.) I like and value iNav but finding the right PID, FF values for your model is just trial and error over a long period of different wind conditions.

[@Doripool]

good english hahhah great flight

[@srigamingkumar9411]

But its only theory ,No vidoe how to do

[@bestbattle]

Sorry, but the automatic text over the video is unbearable. "pea" and "eye" gains... You videos used to be more professional.

[@FPVUniversity]

so, what do you suggest?