Practical PID Tuning - Part 1 | HOW TO TUNE A QUAD
HTML-код
- Опубликовано: 21 авг 2024
- Please consider supporting me via Patreon at: / thedroneracingengineer
In this series, I take you through the entire process of PID tuning a quadcopter, from the very first maiden to the final tune. In order to make the process accessible to more people, all tuning is done using FPV video only. No Blackbox analysis is used in this process at all, although we will look at the Blackbox logs that result, just for perspective, after the tune is finished.
In part 1 of the series, I perform the initial maiden flight and get the general feel of the copter. The copter has obvious low I gain. It shows no signs of excess P gain. As a result, I raise both these values. In the second flight, P term oscillation starts to appear, indicating that P gain may be a bit high, or perhaps just right. I gain is still not quite high enough on roll in the 2nd flight, but pitch is close to correct.
--
Equipment list:
Frame: Shendrones Mixuko (From Atees.com -- thanks, Atees!)
Motors: RCX 2205/2633kv
Props: KingKong 5040
ESCs: Littlebee 20A
Flight Controller: FPV Model Xracer F303
OSD / PDB: RedRotor RROSD Pro
Receiver: FrSky X4R-SB
FPV Camera: HS1177
Video Transmitter: TS5823
All-up weight with 1300 mAh 4S battery is about 435g.
When you said "without black box"
I clenched my fist and said, "YESSSSSS!!!"
That was about the best PID tuning lesson I have seen so far. Keep it up!
+Andrew Demczuk glad you liked it. More is coming.
I have a question. When i roll my quad fast then is there kind a lag or
however i should say this, it does not make smoth rolls. What could that
be and how can i correct that ?
I get this too i dont know what it is ?
Yes this man tells it so everyone understands it. Love this guy. Im promoting his channel for alot of beginners. If they see his videos they will learn it right away. Instead of watching 20 movies before you got to know what you need to do. So thank you sir! Please keep up the good work. Best of luck from Norway. Peace and wisdom be with you sir.
Here's a summary of this video for those who need it...like me. 1. Punch out full throttle and see if it pitches, rolls, or yaws. If it does, raise the I gain on the corresponding axis. 2. Raise P gain until you see Oscillations, or go high on P gain (create oscillations) and lower until they go away. P gain oscillations in hard turns are even sounds verses hi D gain oscillations which are warbling sounds. 3. Once you get the P gain set with slight oscillations in turns but not in regular flying..up the D-gain to tame them down.
there i was thinking you could not possibly explain it any better than you did until now, still amazes me how good you are in explaining stuff :D keep them videos coming!
+Chris S. Wow! What a nice thing to say. Thanks!
this video has been more helpful than any other pid tuning video I have seen yet! part 2 PLEEASE!!! :-)
Thanks for the kind words! I am editing part 2 now. It should post some time in the coming week.
Brilliant, as always, I've just built my first 250 quad, flown it yesterday for the first time (having used your previous vids to learn how to fly in FPVfreefider). It flies well but I'm now keen to learn more about the PID's and see if I can't get more out of my quad. Perfect timing :-)
Hope it helps you tune better.
My new favorite video. Good stuff. I finally managed to wrap my head around rate mode flying. Now I'm on to Tuning. Nice timing in this video. I have a feeling this is a huge help for a lot of people.
Hope so. Thanks for watching!
Really great guide for PID tuning, a lot more informative compared to other videos on RUclips. Thanks josh! Looking forward to the rest of the series.
+Amber Meows Glad it's helpful.
This PID tuning session is exactly what everyone was looking for. Thanks Josh
Thanks! Glad to hear it.
@Joshua Bardwell
I am re-watching these videos to help me tune a new flight controller. Thanks again for the great videos.
I friggin love that yard.. I can imagine Joshua riding a nice riding mower in the zone just mowin' :D. Thanks for another great vid
I know that is absolutely beautiful
This is brilliant Joshua. Your effort to share your knowledge is simply amazing. Number 1 mini quad's guru for me, and a lot of my friends too.
+bard moon thanks. Very glad to hear it's helpful.
After all these years we are still coming back
Thank you for the video! If I understand correctly...
Keep raising P gain (on all axis) until you see oscillations. Then lower them very slightly. It should feel locked in.
For I gain, do a punch out and see if the quadcopter holds its place and doesn't "drift". How will I know if I gain is too high?
For D gain, just do hard turning maneuvers and see if there's any oscillations. Keep turning it up until they're gone. If it's too high, it will feel sloppy.
Generally correct. If I gain is too high, the copter may oscillate in extreme cases. There may also be bounce-back after flips and rolls, although Betaflight has logic to prevent this. Excess I gain on yaw may result in the copter feeling like it wants to "pull into" or "pull out of" a turn at the end. This is because the I term on the yaw axis takes longer to return to neutral than the roll axis, because I gain is too high.
For D gain, you can't simply raise D arbitrarily. Eventually you get excess D gain and hot motors. You can destroy a motor or ESC this way.
Joshua, you are a highly talented guy. Thank so much for sharing your experience in words that I can understand and put to practical use. Big fan of this tutorial, patiently waiting for part two. Respect.
+Lee Swifty happy flying!
Exactly the kind of PID tuning series I need! Great work man!
Awesome! Thanks.
same! I was tuning last night and couldn't figure out why I could hear a loud vibration(so much vibration it vibrated one of my motors screws loose causing it to crash), so now once I've seen this video I think my yaw P is to high. It was shaking really fast immediately after arming once I got in the air it was OK but under 50% throttle it would shake and could hear the oscillation, does that sound like a high yaw P? sorry about the long ramble I just need help.
It's hard to judge. High P would usually manifest under higher throttle and go away under lower throttle. At a certain point, it's not certain what is causing the issue and it's a matter of trial and error to solve it.
Joshua Bardwell also one more thing. When should I set my expo? Before or After tuning PIDS
it shouldn't matter too much I don't think. If the copter is basically flyable, the finer points of setting expo and rates can be put off until later. But personally I try to set the expo and rates right off the bat so the copter flies like I expect it to. Until betaflight 2.8, I have been basically copying the same rates forward since like betaflight 2.1.6. With 2.8, the rates changed (super expo) and I will have to re-calibrate my expectations going forward. Look for a video series r.e. setting rates soon.
How come did I miss this video... you are doing a lot for the hobby man!
Thanks for doing these videos; makes it so much easier to understand than just reading about it!
Have you ever told Chopper to "sick balls"?
Also thanks for this and all the other videos you post, they are a big help to me!
+puppetx that's who he's named after!
Didn't want to put you out, just thought it would be helpful for us Newbs to help get are heads around the theory:)
I appreciate your efforts
+tahosrfr no worries suggestions are always welcome.
Thanks, this is the best practical intro to tuning I have found yet. Can't wait for the rest of the series! Looking forward to making use of your insight on my (first quad) ZMR250 (although perhaps with some BB analysis thrown in too).
This will be very popular Joshua, Great work.
Exactly the video I need but wow so intimidating because so much information
great work with the voice over while it's happening and replaying a clip many times to firmly show the oscillation sounds. I have an armattan with integrated fc coming any day now and the best part is its basically the naze rev5 aka the good naze with a 8mb flash chip. looking forward to black box tunning.
JB...I finally got the nutz to fly my riot 250pro that I showed you at FF east. and I agree with all the advice you and others give with getting something sturdy and flying in acro. I was scared shitless until after 3 or 4 total crashes, then I realized this thing is made to wreck.... I went from nervous to just having fun and went home with alot of info...
Honestly, the less scared of wrecking you are, the faster you will learn. The flip-side is you may lose a few copters so it's a toss-up.
I am going to hang my broken props on my wall at work...I think I will need a bigger wall???lol
I have a special place on my wall at work for broken props. but I think I will need a bigger wall...lol
thanks dude....yea hovering is good but hitting the throttle is a total new experience. it just go's like a bat out of hell. but I love it. when i try to stop it and bring it back twords me it flips about 3 or 4 times and plants into the dirt.....i will learn..
Joshua, this is Tim from the Future, nice job on this vid, hope the Baby is doing fine.
I just wanted to tell you thank you for every bit of information you have given us all. Your time and dedication is much appreciated. I cant wait to see whats in store for the future. Hope to meet you one day. I even subscribed on my wife's account to hopefully help out lol.
This is exactly what i need to further tune my quad. I have it good right now, but I wonder if I can make it better but not sure what behaviour to recognize and how to correct it. Thank you Joshua!
First, make sure that P gains are high enough. This is the single biggest thing you can do to give a sharp, locked-in feel. But not too high! Okay... so that's not super helpful I guess. My point is, there is a place where P gains are okay, and the copter seems to fly well, but you still have some small tuning issues to work out. And then you raise P gain another 1-2 points and suddenly it's flying EVEN BETTER. So if you stop raising P when the copter seems to fly well, you may not go far enough. This is why I always raise P to the oscillation point then back down.
So my P is as high as it can be. It feels stable on hard throttle and when I cut motors to drop down. I enjoy high rates at 0.60. My uncertainty lies in continuous correction when making turns or lining up an obstacle. I'm not sure if it's because of my piloting skills (or lack thereof). I haven't touch the I or the D yet, but I have PID adjustments configured on my Taranis so I can do changes without plugging in.
For I and D should they be as high as possible or as low as possible? I haven't watched Part 2-3 yet, so don't answer if that is the case. I'm literally watching your videos with pen and paper.
I've watched many videos but yours are easily the most complete and with great explanations. You do it so well.... you must be an instructor for something :-)
Another aspect as a new pilot, is that I don't know if the configuration in PID are the best that it can be. I feel that this is one of those things that you don't know what you are looking for but once you find it you get it. Does that make any sense? Another question is should I reduce my rates while configuring PID or is that completely unrelated. Thanks
excellent and so practical. another great training lesson. explained well. looking forward to the next one
Thanks very much.
Your have a very intuitive understanding of PIDs! Interesting!
great vid Josh. I started tuning newest betaflight yesterday and am basically where you end this vid. Kept raising P as stick feel is way better but lots of 180 turn prop wash while at speed.
ran out of lipos to finish lol
Betaflight 2.7 and raise D gain a bit.
+Joshua Bardwell i am on 2.7.
will try that
I'm still struggling with my first build, but this is a great video hope to see more.
I live in a terraced house in a village on the edge of a small city, I only have a front garden, it is 2 metres square.. You sir are sooooo lucky :) all that space.. Great video thanks!
+Patrick Wilson 2 meters square... you are going to get really good at proximity LOS!
+Joshua Bardwell :) I can hover my Cheerson CX-10 there, almost..
Great work Josh, just started tuning my first homebuilt quad, this is so useful :-)
Great to see, really looking forward to this series going forward.
Part 2 posts tomorrow morning at 9 AM EDT.
Just posted it now, an hour early. Enjoy!
Thanks so much, this is one of the best tuning videos ever ! just waiting for the second part :) hoping to be uploaded soon :)
Yes, coming soon. I can't remember but today or tomorrow I think.
Great video, super helpful, look forward to the rest of the series.
Coming in about a week, unfortunately. Wish I could get them out sooner...
Man, I`ve sure got a lot to learn! Glad I came across your channel! Subscribed!
Awesome video, thanks for taking the time to make it.
Hope it's helpful!
Hello sir, im from indonesia. I'm your new subscriber. Thanks for your lesson video, i'm loving it 👍
Ik I’m late but I was so confused with what to set my pids on and now my quad flies beautifully
I have a "full" BetaFlight F3 board coming from FPV Model, and what I assume is an abbreviated implementation, the EMAX Femto F3 in a kit from FliteTest. I assume the Femto won't have any data storage onboard, so this video series will be very helpful with that one.
Coming from APM, I imagine there will be some similarities but many improvements too as everything now is faster and more maturely designed.
Hi Josh, again a perfect vid. I like your scientific approach to explain things. Very Very Professional. Im looking forward to part 2 of the vid
You know when its going to come out yet ?
Actually, right this minute!
This is the type of PID tuning guide I have been waiting for. I don't have blackbox so all of your BB tuning guides was hard to follow. Thank you for making this and hopefully more to come. Your RCGroups thread is hard to follow now since it has hundreds of pages.
Question - if you mentioned this already in the video I missed it but, around the 10 minute mark while doing pylon turns, I noticed the quad oscillating slightly as you mentioned, but the quad still was drifting slightly for my taste. You raise the P term on roll for that right? This will surely cause more oscillations. Do you tune the oscillations out with D? Other than that, quad is close I think.
I guess for a RACE tune, slight oscillations is okay if the stick feels really good right? How does slight oscillations effect the speed of the quad? Basically, what I'm asking is, is it okay to have slight oscillations if the stick feel and quad acts how you want it?
The drifting may be the result of me not being used to the uptilt and not coordinating the turns perfectly. I agree that a race tune will likely have some propwash oscillation.
Thank you for this series!
Thanks for watching.
I was testing my yaw while tuning, moving the stick left to right, with high yaw rate, when it just falls out of the sky. If you want a detailed description, it flipped backwards about 180° and fell.
If it flips towards the down-spinning motor, min_throttle may be too low, causing a motor to stop fully and not start again.
+Joshua Bardwell It started doing that after adjusting PIDS on the pitch axis, it also likes to overshoot in a flip, timing on sticks is right.
Look at Blackbox and see if a motor is zeroing out during the move, and then going rapidly to maximum as the stick re-centers. That's an indication that min_throttle is too low.
Thank you, this is exactly what I wanted to see.
Awesome!
Very nice :)
I can not wait for part two :D
Hurry up, hurry up :p
+ABMNS PRODUCTION Sorry to say, it's going to be at least a week. I queued up videos for my business trip, and I haven't even started editing part 2, although it is shot. Videos are currently queued through May 29. I will be back home on Friday, and I know this series is hugely in demand, so it will be my top priority.
Joshua Bardwell No worry Joshua :)
I know you are busy these few weeks! You made it pretty clear in the previous videos!
Take your time and have a great business trip ;)
whats with the video its like 20fps and glitches i fly 25mw and if i was flying there i think i would not have any glitches
+8alakai8 the FPS is something my DVR does occasionally. I just failed to catch it before recording this session. The 2nd half of the video should be better.
+8alakai8 also, the DVR is recording with regular dipole antennas, not cloverleaf, so it's reception is worse than I see in the goggles.
+Joshua Bardwell oh oke thats wy i was thinking youre antenna was bad or vtx
I thought it was your SD card class. The write speed might be too low?
as you see Joshua the same rates have different outcomes on other frames. degree/sec seems logical but its not behaving like that ;) nice tutorial about pid tuning, i still keep learnig about it. i also noticed that switching looptime from 1000 microsec to 250 eliminates my propwash by 50%
+Hans Turpyn yup. Definitely different rates of rotation on different frames. I thought of our conversation immediately.
Are you mowing all that grass yourself? Lots of work needed there, and it's always impeccable! =)
+GilDev2 yup.
very much appreciate your work
+sqwert thanks for saying so!
Mate awesome video. Very aptly named extremely practical explaining visual effects and audio, so good. FB sharing the crap out if this 😁
I totally get that. Keep those Vids coming Josh:)
u sound like andy richter from conan
Great job !! Thanks a lot !
2020 watching while lockdown :D
Really appreciate you
What a good dog!
My dog goes insane just hearing the motors
Great video one I'm waiting for for a long time Thanks ... I'm not seeing it much in your video but I will like if you can show how to maintain low level flight and reduce the altitude gain when you do a hard 180 turn. Again Thanks
That's not tuning. Just practice throttle management.
12:30.
"I think we're going to land it." [ROLL LEFT, DISARM]. lolz.
It wasn't even that bad of a landing, but it made me laugh.
As someone brand new to this I wish you explained "why" these things needed to be adjusted (I'm only 5 minutes in so far). You say "yeah, pitch and roll I gain need to come up" and you are pointing out what symptom leads you to that conclusion, but you aren't explaining "why" the solution fixes the problem.
+Sam Iyam that's a much deeper theoretical topic. It's just too much to fit in one video, even for me. Here is a good start. ruclips.net/video/0vqWyramGy8/видео.html
What if on a pilon turn the front dips down too much? What pid should I look at given that scenario?
I have bounces on my roll and pitch and can't tune them out even after 8's time on the field.
I've spent may be a couple of hours watching again and again about that pids and still can't understand what to do. My set is - cobras 2204/2300, lantian 210 frame, sp racing f3, little bees 20A, kingkong 5040BN props.
Now I am trying luxfloat pid controller and 250 looptime value. Playing with pid values as you guys describe in the videos, but it's still bounces on flips and rolls.
And one more test which I haven't seen yet in videos - try to jerk roll stick while smoothly dropping the throttle, to make the quad starting to freefall - my quad starts to shake by roll axis like a boat on see waves (vvveery slow oscillations) - it happens with any number of roll PID (for instance right now it's 6.0, 0.42, 18).
so hate pids :D
+Roman Polonsky luxfloat tells me that you're in cleanflight? Try Betaflight 2.9.1. See if the defaults aren't already flying better than your current tune.
I use 2.8.1 Betaflight and Cleanflight configurator. Just had another try to configure my pids an hour ago and realized that may be my flips/rolls technique is not correct - I drop throttle to zero while doing roll or flip. I tried to do flips/rolls with throttle and the quad became much more stable! Oscillations still present, I made some changes and it became even better. I like it's behaviour more or less right now! So I made a conclusion that it's correct to perform rolls/flips with throttle.
But than I watched again your and mr steele's videos - you drop throttle also! ( But may be not to complete zero, and may be you increase throttle before roll is over.
So I'll continue my experiments.
And thank you very much for all your effort!
Zero throttle results in a more axial roll. Keeping throttle up results in more of a corkscrew or barrel roll.
@Joshua Bardwell Talking of puppies... how did you get your dog used to the quad? Mine goes nuts and chases it everywhere.
He chased it like crazy until he wore himself out and eventually figured out he wasn't going to catch it.
my dog broke a window jumping against it trying to eat my quad. no joke my mom was so pissed
@@propabilityfpv303 lol poor pup
Good info, well explained, cheers Joshua :) Though you sometime don't leave text up long enough ;)
More on the effects of too high I gain would be nice. Peoples opinions vary a lot regarding I gain. I know for example Boris like it as high as pos but Steele likes it low. What are the pros and cons?
Too high I gain makes the copter feel stiff. Like transmitter springs, some like it loose and some like it stiff.
If I is too high, it can cause rebound after flips and rolls. It can also make you pull into a turn after you center the sticks, especially if yaw I is too high. But all of that is moot if you are using Betaflight which zeroes or reduces the I term when angular rate is high.
Hey Josh, thanks for the great videos man. Any thoughts on the Mixuko?? Andy has some crazy designs!
ruclips.net/video/OG7_46LwfgM/видео.html
is this still your most recent PID tuning guide? i find UAV-tech videos to complicated for me, but i wouldn't mind understanding blackbox tuning
howdy joshua,
I watched all 5 and thanks. great info in here. I like the sound side of things and the I term.
I hadnt caught the idea that throttle effects I as much as it did.
a quick question that may be of use for myself and others.
As the video starts with tuning the pids, is there a pre-cursor video talking about the other settings you apply?
e.g. rates, looptimes etc.
I cannot find that sort of thing anywhere.
or perhaps one on the effects of the most common settings.
cheers and thanks for the videos
ruclips.net/video/htkw7d97bOo/видео.html
thanks
Hey Josh!! great videos we are following you for a while, very didactical great quality videos!! congrats from Chile. I you don't mind I Have a question. i'm using Naze32 w/ 5040 props flying nice and neat, yesterday I try a 3-blade 5045 fiberglass props and the bastard starts to fly unstable, like bumping in angle mode I guess it's some PID tunning. i'll apreciate any sugestions.
Thanks a lot!
Dear Joshua, considering regular 5" quad on 4S and latest (3.2.4) Betaflight -- is it better to tune a quad with Anti Gravity and Dynamic Filter off, get the most out of the quad possibilities to one's liking, and then turn on both Anti Gravity and Dynamic Filtering? Or the right way would be to tune with these features on?
so before you start your PID tuning you havent touched your rates or rc rate, rc expo at all? or did i misses something? nice video, love your input! wanna start tune my quad these days =)
+GourmetMusicVec I copy those over from the last copter. I've been using the same ones forever.
Ok, thank you! Just one more question, is there a difference between tuning in Acro or Airmode? I will use Airmode only, so isnt it the best way to also tune it in Airmode?
Yes, absolutely. Tune how you fly.
Okay, thx alot! =)
Chopper.. sick balls!
+Barry Anderberg that's exactly what he's named after!
Great series, thanks! I'm trying to tune my first build this week and haven't been able to reduce the prop wash much. What should I look at most to reduce the prop wash? Is it possible to eliminate this completely?
ruclips.net/video/qg1jf85zyqI/видео.html
super helpful video man. A lot of tutorials are kind counterintuitive imo. quick question if you have the time. my quad feels really good with my tune but I'm still not great at tuning. i have this issue where if i come out of say a power loop and free fall with the copter parallel to the ground i get a rapid sort of side to side wobble where it seems as if its fighting itself. this is with kiss fc.
That's propwash oscillation.
ruclips.net/video/qg1jf85zyqI/видео.html
Im just trying to understand the methodology here, I thought that excess D term was undesirable and we should be aiming for a lower D term and matching P term vs a higher P term and matching it to D. Essentially its tuning out oscillations with P vs tuning them out with D.
Is there really a benefit of doing it either way?
Oh and thank you for the RROSD vids. I put one in my latest build and I dont think I can go back. Best $35 ever spent
Excess D term is undesirable, but "enough" D term can help improve a tune. So if you are not having micro-oscillations then you are free to adjust D as you see fit.
I don't know a huge amount about PID tuning, but why would using the blackbox be cheating. We all have access to the blackbox, so why wouldn't we use something better and faster?
On the next Vid can you give a brief description about the term as your making the changes and how it
applies to what your seeing? Tnx
Well, the whole series is already shot, so...
hi joshua, hopefully i can explain this clearly. a few of my quads have a very ice skating feel when flying. For example, if i were to give pitch forward and let off of the pitch it doesnt brake and stop on a dime like my other quads. sort of if like if you push off on ice skate how even after u stop trying to move your body slide against the ice until its loses energy or i give counter motion. how do i prevent/adjust/correct this? i assume its a pid issue not a rate or somthing else.
I would have love to see the tuning with an hd camera since it is far more recognisable but good video anyways.
Nice Video Joshua. Why are you using the Multiwii Rewrite PID Controller instead of the Luxfloat? I know that the Luxfloat Controller is using Floating point math and the Rewrite is using integer math to control the copter. And floating point math needs more processing power. But although of the higher need of processing power it seems that most of the people are using Luxfloat instead of Rewrite. !? Is it better to tune? Would be nice if you could to a video about the different PID controllers. I never understood when to use which controller.
+xuxusito I've been using rewrite since I was on Naze32. There was once a time when it was Boris's darling, before he moved on to Luxfloat. My rates are tuned for rewrite and that is a big component of how a copter flies. So I stick with rewrite because I don't want to re-tune my rates.
There is no longer any difference in flight between rewrite and luxfloat as of Betaflight 2.7. Even the PIDs are the same. If you are on an F3 board, luxfloat nay give reduced processor utilization. On an F1 board, rewrite will definitely give reduced processor utilization. There isn't any reason to discuss how to choose a PID controller because there isn't any difference between them any more.
Ok thanks Joshua, since I have a Naze32 Rev5 i will use Rewrite then for a lower pocessor utilization.
someone should make a software to predict what pids you should have
Cleanflight has a feature called G-Tune. I have yet to try it but from what i've seen and read about it should take you that much closer to properly tuning your PID's
+BarnhartPhil gtune is really hit or miss. I don't recommend it.
+BarnhartPhil for one thing, it only tunes P gain if my memory is correct.
Haha lol, Chopper made me laugh
As a total beginner, it would have helped me if you did a better job at pointing out the sounds/propwash/oscillations/issues... that you are talking about. Maybe show some very extreme versions of these issues. I have a lot less experience, so I thought the quad sounded fine and didn't see any "yaw dipping to the right" but you said otherwise, so now I am even more confused. And, you didnt even get into how you knew what to adjust. The video went from, lets fly a couple feet off the ground to needs more D. How do you know that it is D and not P or I? Oh, I have so much to learn about this sport.
Please watch my "PID Tuning Masterclass" which I created to address exactly the concerns you're asking about.
ruclips.net/p/PLwoDb7WF6c8mTH6A4HyzPPdX5lsvEwBeA
The real MVP right here. Thank you!
on my taste of starting tuning your D is way too high to find a proper P value. 0 for D doesn't work either for me, because it starts oszillating immediately. I set my D usually at around 5 - 7 and then I crank up P. Same the I-value I set a little lower for the first P tune. Are you not afraid to get a much too high P when D is still that high?
I usually give betaflight default PIDs at least a shot when going to a new version. Boris spends a lot of time tuning them, and they are usually a bit on the conservative side so I expect them to be low. I flew the default PIDs and didn't see any signs at all of excess D gain, so I left it where it was.
nice really helpful
+Finlay Williams Awesome! Glad you think so.
Thanks for this tutorial !! It really helps understand tuning.. Just a quick question, I have some problem with my FPV signal when I throttle up. I have an LC Filter but it doesnt help. I understand that you refer to maybe a high I or excess of D. I did increase D a lot because I was getting bounce back on rolls and flips. Should I decrease D and decrease I to get rid of this issue with my signal ? Thanks again and keep the good work ;).Im using 2.7.1 and have a Naze32
I think there's been a small misunderstanding. I gain won't cause noise in the video signal. So you're fine there. Excess D gain can cause noise in the video signal. Listen for "warbling" oscillations as you throttle up and feel for hot motors when you land.
If the LC filter didn't make any difference at all, then the noise may be being picked up from an ESC power wire passing near the video wiring.
+Joshua Bardwell ok thank you very much I will defenately check this out. I appreciate the fast response !!
if you know right away which adjustments need to be made, does it make sense to just land after half a battery, tune and takeoff to maximize progress per battery? until you get into the more subtle stuff anyway...
Yeah for sure. But be careful of making too many adjustments at once, because sometimes you will end up with some weird effect and not know what caused it.
Hi thanks for great videos Joshua, wich osd do you use? I see you have the amp draw and current draw ? I want that too :D
+mrtokyo1989 redrotor RROSD
great video, why did you decide to go for DVR recording and not HD ?
+Flo the real reason is that the Mixuko isn't designed for HD cam mounting (although it can be done of course). But I like that the DVR plus ambient sound gives you the actual experience of what you would see if you were there. That being said, HD cam is the only way to see really fine oscillations and other very subtle tuning issues.
I've got a weird dilemma guys. I'm about a month in flying custom mini quads bought one from a local guy pre-built & tuned. w/o knowing what to look for or how to compare my pids & rates im gonna throw em out there to see if there's anything visibly unusual.
Roll P: 50 Roll I: 40 Roll D:22
Yaw P:58 Yaw I: 45 Yaw D22
Pitch P: 60 Pit I:50 Pit. D22
D. Stpnt: 2.0
Stpnt Tran: .3
r.c. rate: 1.42
r.c. yaw rate: 1.61
roll super: .56
pitch super: .56
yaw super: .21
rc expo: .16
rc yaw expo: .16
thr. pid. att: .1
TPA brkpnt: 1650
I apologize about all this shit this might not even be possible at a glance idk what to even look for & really don't know how the quad is supposed to fly. Im really into freestyle, flying acro, & just want smooth flips & rolls nothing snappy or irate
I guess I would ask what is your complaint about how it flies now?
Joshua Bardwell i honestly dont even know that I have one. Looking at these numbers is foreign to me I was just curious if an experienced person like yourself would be like whooooaaaa.. your rc rate is crazy high etc.. I'm kinda in a strange spot & don't really know what to expect or how to go about it the learning curve is real lol
If it flies good, shut up and fly it :-)
Joshua Bardwell lol that's the plan where you in Louisville recently that's my turf haha
Dog ever get bored of chasing? My dog is nuts with any RC. Hoping she calms down!!
HI Joshua. You have killer videos very Informative . Thank you Job well done
Im 52 been flying park flyers and new to drones. My first quad is a Lumenier QAV-R 5" FPV racing quad from GetFPV . Been flying full acro finally . I have not tried flips or rolls .But been flying low, high corners at full speed and fast around trees. Get fpv had set it up before shipping to Me I set up everything else on Beta flight. Im a Little lost On PIDS any suggestions on PIDS or setting up the angle horizon , full acro?
I want it to corner fast like its a plane or better. Im going to build one maybe smaller.
Thanks Todd
You definitely want to stay acro only for your flights. I started this way and couldn't imagine using anything else. Full control of the craft is important.
Nice video, your copter is flying decent even without any tuning.
Mine is much worse on default.
I did initial tune LOS. Later FPV reveled that forward flight is really wobbly. It is like driving over bumpy road. My suspicion in that i need more I_gain on both roll and pitch.
That do you think?
+MegaMoonse bumpy road is how I usually describe excess D gain. But if you are on default PIDs, D gain is probably not too high. Try lowering D gain to 5 on all three axes just to check and see if that is the issue. Bumpy road is often also a loose FPV camera or camera lens or even internally the board can be loose.
Flying decent without tuning... betaflight is amazing! If you aren't flying betaflight, install betaflight 2.7.1 immediately! It's amazing. A good set of ESCs such as XM20 will be the single biggest thing you can do to improve your copter's flight, assuming you are not already running a good set of ESCs.
+Joshua Bardwell Thanks I will try lower D gain and compare.
Changing ESC on my poor mans setup would cascade to a totally new copter.
I am running PWM-only receiver, SymonK ESC, CC3D with Librepilot, DYS 1806 and ZMR 250 Frame.
Betaflight on CC3D with PWM receiver does not play well. Only 5 channels out of 6 are available. No Oneshot or Multishot goodness.
Nevertheless it is fun to fly and experiment.
I might do a fresh build next season.
+MegaMoonse are you in the uk mate? I can send you some littlebee 20a flashed with multishot for free if it helps you out. You would probably have to put some new + and - leads on as they have been cut to size. But saying that, they came off a zmr250 frame so will probably fit fine. As a wise man once said 'like is too short to fly bad esc's'. Let me know mate.
+mrmurder75 *life* even.
+mrmurder75 Thanks for the offer. I am not in the uk. And in my case one would say: 'Buy nice or buy twice".
Hi came across a problem I haven't noticed before with, GF7042's I get hotter motors/cool ESC's and with dal T7056C props I get hotter ESC's and cool motors ? which is worse ? thanks
Looks like I'm alittle late getting to this party and hopefully this question isnt too off topic but two off my motors are getting hot when the other two are not. The hotter the tune, the hotter the motors. Been trying to tune for wind resistance. Could this be a tuning issue or maybe something else? This is a Pixhawk, medium size AP rig.
Can someone please explain the difference between the cleanflight MultiWII controller settings vs the Betaflight PID in 3.1? I'm just confused between values in the first one being under 1 (ie:4.5) where the P value in Betaflight default is 44. Is there any direct correlation between these numbers? for instance does 4.5 shown in this video correlate to 45 in the new BF PID screen?
2 questions. 1, When I go to zero throttle to do a dive, the yaw likes to spin a little, how do I fix that? 2, I'm having to put excessive I gain on pitch, on 0.070, and it's stil, not happy. Why does it want so much?
Always tune P gain high enough before tuning I gain. Low P gain will require excessive I gain to pick up the slack. Any time you are considering raising I gain, first ask yourself whether P gain is high enough. Only raise I when you are SURE that P is high enough. Think of P as the first line of defense, and I as the fallback for when P isn't able to perfectly correct all error.
+Joshua Bardwell Thanks! What about the yaw at zero throttle?