How do you figure out what a good idle_min value is? LONG STORY SHORT -- take your idle%, convert it to RPM using the Motors tab, then set idle_min to 80% of that value. That is a guideline that has come out since this video was made, and it's one of the biggest questions people ask.
@dronedoutrc5970
4 жыл бұрын
So for clarification, if your dshot idle calculates to 2200rpm then 80% would 1660rpm and that is what you would set you idle_min_rpm?
@trixshop5188
4 жыл бұрын
I know im off subject... My pitch and roll are switched on setup display in cleanflight. Tried setting board alignment off by 90 degrees but still no change. Also the elevator toggles backward. Box model rtf "RAPID" by world tech elite with an spf3
@sunsetpark_fpv
4 жыл бұрын
@@trixshop5188 Im pretty sure JB has a video about that - this might be helpful..... kzitem.info/news/bejne/kpew0mWccaN7a2k
@dominikthone512
4 жыл бұрын
How to: Take Props off Go into Motors tab Connect a LiPo Set the "I understand the risk slider" Spin the Motors up to your idle value which is 10XX where XX is your %. So 5,5% would be 1055. Then have a look at the actual RPM above each motor slider Multiply it by 0.8 and you have your idle_min_rpm
@STEDDiEFPV
3 жыл бұрын
@@dominikthone512 if dshot idle value is 5.5 shouldn’t that be 5.5% of 2000? I.e 1110?
@Quad66
4 жыл бұрын
Cheers. The quick video was the least I could do for how many times I’ve used your tutorials.
@tehllama42
4 жыл бұрын
Right? Same boat, I'm still using them now anytime my first braille method approach to something doesn't work out the first time.
@enriquemaillard-mora9193
4 жыл бұрын
My brain is freezing... 😂 But a the third or sixth view Il will learn something for sure 👌
@andrewbahr1921
3 жыл бұрын
glad im not the only one who has to watch his videos more than once lol
@MarcoGarciabustaphoto
4 жыл бұрын
I'm Learning... I learned that maybe my de-syncs are from setting my idle percentage too low... never dawned one me
@x0DEAD
4 жыл бұрын
Yeah I thinks that's what's been happening to me
@apsfpv2217
4 жыл бұрын
Me too...
@tehllama42
4 жыл бұрын
Motors have weird non-linear behaviors at both extremes, it can be a bit finnicky. This approach should solve that though. I only had to bother learning this because I was getting desyncs on my 6S 7" setup, and it wants to hover at 9% throttle. Not a guarantee to fix the problem, but if you are already having issues, definitely run the slightly higher values over the calculated ones to make sure (and then test at worst case high speed split-s entries and such)
@Makama975
4 жыл бұрын
same here^^ What a relief, I was really down because I couldn't really find the reason. This is a new thing to look into :) Thanks JB!
@stickboyfpv4742
4 жыл бұрын
I find if your ds are too low or your ps are too high.... I was getting flip of death.. messed with the pids. Idk how that could make the difference but it did..! No more fod! Try lowering ps and see if it goes away..
@fabianrudzewski9027
4 жыл бұрын
Wonder when someone starts using Sensored motors on a quad. In conjunction with current control they would make all those features obsolete. The motor would start at maximum torque and no death rolls whatsoever. Yes it requires 5 signal wires, but maybe a racer seeking every little advantage?
@flyingmonkey8245
4 жыл бұрын
Fabian Rudzewski race drones are supposed to be raw and best power to weight ratio but when you add complexity more things can go wrong and that’ll add extra weight slowing racers down
@fabianrudzewski9027
4 жыл бұрын
@@flyingmonkey8245 yet racers prefer predictability and consistency over the last bit of performance. There are even features in betaflight, to limit the motors to an empty batterys performance in order to have consistent behaviour for the whole pack. 5 signal wires and 3 Hallsensors would make a less than 10g difference for the whole quad. I'd only be worried about robustness.
@kyleimagines
3 жыл бұрын
Never call yourself "not smart" Josh! The smartest people can take complex material and explain it simply to others who do not understand. Thanks for all you do! Much love!
@RobbyNeale
4 жыл бұрын
I feel I may be missing some of the usefulness. Take the "Vanover" case where your using a higher idle. Isn't activating dynamic idle removing some of that benefit? If the motor loses torc at low speeds, you are essentially allowing for the lower torc on those motors again. Is it that the lower torc is outweighed by the smaller range the other motors need to move? I think seeing the math would help. Thinking more, I guess it's redistributing a small amount of the work required to a slower but parallel process. In this way, I can see a nominal benefit that most people wouldn't notice and probably not worth the effort. Thanks for this interesting video!
@MrShutterBug
4 жыл бұрын
Hi Joshua! As you pointed out, it is bad to let the motor speed drop too low. The motors are powerful when they spin fast, but they are surprisingly weak at starting up especially when faced with oncoming air. That is, of course, the main reason why we all use the idle speed to keep our motors from ever spinning that slow. So, here's my question... If I set my main idle speed to be just enough to prevent the low RPM problems, then why would I want to let idle_min_rpm spin the props slower under any circumstance? I may tell the quad to do a hard roll at zero throttle, and it may want to lower the speed of the motors on one side, but a hard low-throttle roll still isn't a good time to have motors stuttering because of low RPMS. So, I think it's a really interesting feature but I don't use it for myself. In your video, you claimed that idle_min_rpm might help Vanover bring down his high idle speed, but I think you got that part backwards. If you use idle_min_rpm to prevent low rpm problems, then you are free to increase the main idle speed to your desired feel. Some people might intentionally increase the main idle speed above idle_min_rpm to make it feel more floaty. Some people like Vanover might increase the main idle just to increase resolution on the throttle stick (because that lower part of the throttle would be unused in a race anyway). Before idle_min_rpm there was more of a downside to having a really high main idle speed, but now you can tune the feel of your idle separate from idle_min_rpm which is just there to set the absolute minimum RPM you're willing to use. Still an interesting feature. Just a different way to think about it. Cheers!
@pablofpv
4 жыл бұрын
Dam you Bardwell, that’s another 17mins off my nightly sleep quota! As always good info and kind of got me thinking about how to get more hang time…..
@MikkoRantalainen
4 жыл бұрын
Electric motors actually have max torque when starting from stall and the torque goes downwards as the RPM increases because magnetic field cannot be modulated fast enough due inductance. However, the current generation of brushless motors do not have required sensors to actually push the motor hard from stall so that's why you need minimum RPM for max performance.
@johnpavlic
4 жыл бұрын
Brand new to droning. I have a traxxas aton that im cutting my teeth on. I finally purchased a build kit from rotorriot.com with dji hd fpv. Take into mind i am so new that im still wet behind the ears. I enjoy your videos, they have taught me so much. Looking forward to fpv’ing!
@uavtech
4 жыл бұрын
Awesome rundown JB!! If folks want to get to "zero" prop wash, tune your stuff and raise idle to 8 or 9 percent. Dynamic idle takes that improvement one (little?) step further.
@tehllama42
4 жыл бұрын
'Zero' propwash AND the ability to chuck into massive rainbow-shaped inverted yaw spins? Yeah. Realistically, I only got into this because I had a pesky 7" 6S rig that would hover at 9% throttle, but when I tried racing it would desync at values below half that.
@PIDtoolbox
4 жыл бұрын
I was wondering about that! thx
@ChrisFPVGermany
4 жыл бұрын
UAV Tech what do you recommend if i run dshot idle value on 5.5 percent with 2600 rpm. What should i set on idle min rpm? Is 12 ok which JB has in the Video?
@Ozzy3333333
4 жыл бұрын
9% idle will kill your inverted hang time but help your propwash. Does it really take that much idle to fix your propwash?
@uavtech
4 жыл бұрын
@@Ozzy3333333 , prop was is never "fixed".
@MewoFPV
4 жыл бұрын
So why would we ever want the pid controller to have access to the min_idle. If the quad flies so much better with higher percentage and if response times are slower when coming out of that super low rpm then aren't you recommending everyone runs higher idle and to not run min_idle? In what scenario would the PID controller getting to use min_idle actually be beneficial?
@georgedowning1803
4 жыл бұрын
a higher min idle results might result in less "hang time" when upside down 🙃.
@MewoFPV
4 жыл бұрын
@@georgedowning1803 I'm mostly speaking for racing and flight performance not for freestyle purposes
@someonespotatohmm9513
4 жыл бұрын
@@MewoFPV You should have more authority lower down. As assuming an ideal case you will have to spin the motor up only half as much as you now have 4 forces to play with not just 2. Might not be the case in the realworld though, maybe it takes the same time to spool them up more, or braking is to slow this low in their speed curve.
@MrStevegibb
4 жыл бұрын
Altitude control will be better with a lower min idle.
@georgedowning1803
4 жыл бұрын
@@MewoFPV MewoFPV dive gates? A reduced hang time will result in less control? In a competitive racing environment you would probs be flying with consistantly enough power that PID will never access min throttle anyways. However by increasing the min idle, when operating at the bottom of the power band, you effectively shift the center of rotation in the direction of the turn. An example of where this might be a problem is In prop wash, as the center of rotation Is moved rapidly any additional rotation command by the pilot will result in an ossilating track through the sky. Yes it becomes more rotationally more stable but for racing having a consistant track may be valued more than a consistent than attitude.
@ChrisQuadFPV
5 ай бұрын
Now we have BetaFlight 4.5 just released 😊
@pimpedoutstereos9747
4 жыл бұрын
Such a nice and humble guy, not taking all the credit for other people’s hard work but also helping the fpv community to understand these features
@PIDtoolbox
4 жыл бұрын
Little spoiler, Joe Lucid and Thorsten Laux are, wait for it.... the same person. Lol. Not sure what the story is there, but both are very smart guys.
@lowtone20hz
4 жыл бұрын
Is that a Tyler Durden thing going on there? 😁
@joelucid9372
4 жыл бұрын
It’s mostly because at first I was a bit embarrassed at how much time I spent with quads. So I didn’t want to use my real name. Facebook requires using the real name and by now if you take time invested and results achieved I’m no longer embarrassed. So I’ve had my coming out ;).
@dr07828
4 жыл бұрын
15:16 LoL.... JB, searched for hours but I couldn't find "Nydamic" anywhere in the Betaflight CLI.....
@stevedelp4067
4 жыл бұрын
Joshua, you are by definitions a true intellectual , thats what u do, make complex subjects understandable to the average person. Thanks much!
@enriquemaillard-mora9193
4 жыл бұрын
Try to understand everything when you're French with a small English 🤯🤯🤯. I WILL LEAR SOMETHING TODAYYYY 😂🤣
@stevedelp4067
4 жыл бұрын
@@enriquemaillard-mora9193 when u understand more than one language your pretty smart too.🌝
@ruftime
4 жыл бұрын
A mounted prop will affect stall, a lot more weight to get/keep rotating, so higher torque via rpm is needed.....as you found out😎
@splif7773
4 жыл бұрын
Been using this for a while now, it's based off max rpm, rpm filters have to be enabled, and transient throttle has to be off. I use idle min rpm of 15 for 6s 2000kv.
@Theo-mb2dd
3 жыл бұрын
Im quite a newbie to fpv, please guys tell me if im right about this. Ive revently learned to dive and i ve noticed that even with 0 throttle the quad goes forward quite a lot, it doesnt fall vertically but rather at 70° angle. Is this the right tutorial for me? Should i simply lower my throttle idle to that 2,5% that JB says is the freestyle minimum?
@Theo-mb2dd
3 жыл бұрын
Ps. I have a iflight cidora, and the stock value is 5,5%.if you think that is right than it means I just suck at flying and i need to pratcise falling vertically
@x0DEAD
4 жыл бұрын
I think this is the issue I've been having with my beta85. I got one motor that will stall out on snappy maneuvers. I have motor stalls on one of my motors that dethrolls me out of the air as I'm coming out of a maneuver.
@effectic
4 жыл бұрын
the same
@Asu01
4 жыл бұрын
ESC temp display and warning are another obscure useful features, especially if you're running absolute minimum filtering. ESC and motor temperature are linearly correlated and can indicate whatever you're about to burn a motor due to excessive noise. These settings can only be accessed through CLI.
@tehllama42
4 жыл бұрын
Very true, although with most of the dynamic filter and RPM filtering capability, ESCs tend to stay pretty cool, even being pushed to the point where motors are getting hot again in my experience... although I tend to encounter these conditions after I 'encounter' solid objects with my props
@BBFPV
4 жыл бұрын
Do you really need that? My ESC can do 60A and the motors can't do much less. The battery, even a GNB 130C, only manages half. So nothing can smoke up.
@Asu01
4 жыл бұрын
It depends, @@BBFPV. If you're running default filter, then temp display won't help much. I run very minimal filter so the temp display is a must have because whatever I clip gates or things where my prop bends to a point where it generates noise which gets amplified in the PID loop and my motors will get real hot real quick. It's not about whatever you're going to overload one of your system, but if you're getting noise into your motors, the motors and ESCs will heat up until the enamel on the winding gets burned and you could get short circuit which may burn ESC as well. Just play it safe.
@BBFPV
4 жыл бұрын
@@Asu01 Therefore you should use RPM filters, even with bl_S because then a notch filter is on the motor rpm and even with bent propellers the pid didn't amp motor/prop out of balance. I now have the filters on 1.4 and the motors stay cold. For testing its ok but every day use i don't like OSD overload.
@drkastenbrot
3 жыл бұрын
my esc will remain stone cold even while literally burning up all 4 motors at once what you are really looking for is motor current, which you can roughly see in motor throttle in blackbox. i wish betaflight had some automatic detection of a motor sticking out in terms of thrust vs throttle because its the quickest way to spot a bad motor or prop.
@creatorTWin
4 жыл бұрын
I think I’ll set RPM filtering before I mess with this.
@shellbournian
4 жыл бұрын
Wouldn't you want a prop on the motor to know the minimum value it will spin at? Drag, friction, load... all that? Not that I'm suggesting someone have their props on when the quad is on the bench, but maybe adjust this outside with a laptop?
@JoshuaBardwell
4 жыл бұрын
The number is always going to be much higher in the air with air moving past the prop, so bench testing establishes the absolute lowest limit but you can't avoid flight testing.
@Ozzy3333333
4 жыл бұрын
read my reply above
@MUuulerOriginal
4 жыл бұрын
Um at around 5:00 can it really spin around the center of mass? The pivot point should be somewhere between the right motor and the center of mass if not on the right motor imho, just because the right motor won't reverse thrust.
@DirtyLew42
4 жыл бұрын
an object will always rotate around its center of mass, no matter where the force is applied from. if a force is applied at the center of mass, or the forces are net 0 at the center of mass, than the object wont rotate
@MUuulerOriginal
4 жыл бұрын
@@DirtyLew42 I agree somewhat. It will rotate around the center of mass, but another vector is introduced which induces a change of the position of the center of mass, as it is not compensated by an equal force on the opposite side of the center of mass.
@DirtyLew42
4 жыл бұрын
HoverFly incorrect. Center of mass will never change, unless mass is physically moved. Please do some research of your own.
@sganzerlag
4 жыл бұрын
No thanks. Will stick to BF 3.5.7. My quads fly awesome on 3.5.7 and there's just less hassle involved with setting up and maintaining those earlier and simpler versions of BF.
@tehllama42
4 жыл бұрын
And there's literally nothing wrong with that. I personally moved a few dozen quads up to BF4.1, because I felt the performance improvement was worth it, but they flew really good on 3.5.7 too. I'd argue if you're happy, just go fly. Repeat as necessary
@rca168
3 жыл бұрын
Start at 2:45 to skip youtubey intro
@retrodudefpv
4 жыл бұрын
Hi; I use your channel as my goto for everything about building, tuning quads. I have to say, I still wouldn't be flying yet, if it weren't for Bardwell knowledge base. I tried dynamic idle today. I used d-shot idle as 7.5 as can be seen, I'm a very amateur pilot, and need all the help I can get. I set idle min at 11(00) - even though my betaflight motors tab allowed idle down to 4(00) rpm. For the first time ever, I got confident with hang time, albeit momentarily and also noticed the drift when turning into a dive was significantly reduced. I have put it here to illustrate but completely understand if you delete and apologise in advance if it contravenes any rules - just trying to show how much it can help a shaky old dude trying to fly - kzitem.info/news/bejne/s5mYuIqtrGhpimk - and thank you, yet again, for immensely informative videos
@ianrmurphy
4 жыл бұрын
Does this feature require bi-directional Dshot and BLHeli32 ESCs? Not mentioned in the video...
@JoshuaBardwell
4 жыл бұрын
It requires bidirectional Dshot. You can use blheli32 or you can use JESC or JazzMaverick with blheli_s. kzitem.info/news/bejne/r514sH59aaWdgGk
@nikfpv3456
4 жыл бұрын
Anyone know if there's a way to override betaflight's max idle % to go beyond 20%? I'm doing some cinewhoop experimenting and this would be very helpful. Thanks.
@FishingEasternCapeSA
3 жыл бұрын
Betaflight 4.2.8 my default idle_min_rpm = 0. Been flying like this and it flies great so now im just confused after watching this video. What am i missing? Do you guys still fly with air mode?
@jtaraskus
4 жыл бұрын
10:42 is it posible that this minimum depends from battery voltage? lets say cel voltage is 4.2 and i set minimum idle, and batery drops to 3.9 can my motor stal from this?
@Art1f4ct
4 жыл бұрын
Probably not because idle min appears to be based on motor RPM not percent throttle
@jtaraskus
4 жыл бұрын
@@Art1f4ct this have sense, my min was 0 and idle 300 I think I'll make some changes :)
@JoshuaBardwell
4 жыл бұрын
I tested with empty and full battery and found the stall rpm to be the same. I think this is why idle_min is an rpm and not a percent.
@tehllama42
4 жыл бұрын
Yes, it very much does depend if you're changing cell count without this. Across battery discharge, the old way would have fairly minor changes, but this does RPM... and it's usually best to run VBAT PID Compensation anyway (technially unrelated, but it does help with the same problems). While it sounds odd, this feature removes those changes based on input cell voltage because it's using RPM data, instead of just blinding sending a DSHOT command and the RPM you get is what you get.
@MrStevegibb
4 жыл бұрын
My understanding of dynamic idle was that it used the rpm data to make sure the motors never stalled whilst allowing a much lower minimum idle overall. This is probably useful for making last minute adjustments when flying as your quad should be less floaty.
@JoshuaBardwell
4 жыл бұрын
This is one approach, but the smart folks I talked to seemed to think this was actually not the way to get the best results out of dynamic idle. That a quad will generally fly better with a higher idle speed, and the value of dynamic idle was allowing a higher idle speed without a net increase in idle rpm due to the PID loop needing to speed up motors.
@billyd78
4 жыл бұрын
So I got confused by the idle min section. You went through the exercise of getting the lowest possible rpm, (300) and then it seemed like you "winged it" and put in 1200 in the CLI. Do we use 4x the number we come up with?
@tylerpayton7078
4 жыл бұрын
yea im confused also i just went through this whole thing and now my quad just dies at the lightest blip of a roll.
@JoshuaBardwell
4 жыл бұрын
I didn't wing it. I came up with a value of about 300 for three motors and then 600 for one (probably damaged) motor. I flew with a value of 600 and got an arm-drop on sharp moves. So I ended up raising it until the arm-drop disappeared. 1200 is where I ended up. That's the procedure I suggest you use.
@tylerpayton7078
4 жыл бұрын
Ok I see what you saying now. Update: it wasnt the dynamic idle change I made that caused the quad to die, it was loose positive wire coming out of the xt60 plug. Dynamic idle is working great, thank you Josh also informative.
@prottentogo
4 жыл бұрын
@@JoshuaBardwell So if we have to add the 4 motor idle values from the bench test (that wasn't quite clear tbh), why didn't you then come up with 15 (1500) or put it even higher as you suggested?
@gmivisualsjason3729
4 жыл бұрын
Ah... Brilliant video as always. Sooo what have I learnt? Erm stick to stock BF settings and go and fly. 😂🤣😂🤣😂🤣😂
@epp1026del
4 жыл бұрын
Man!!! Great informative video once again. You break it down so nicely always!! Big thx
@aowi7280
4 жыл бұрын
I turned this on and now the motors slowly speed up when its sitting on the ground.
@JoshuaBardwell
4 жыл бұрын
That's completely normal if props are off. Put props on. Go fly.
@jaredbryngelson
2 жыл бұрын
Worth mentioning that if you are running 4.3 Betaflight today (quote from BetaFlight): "When Dynamic Filtering is active the static idle value is disregarded, because the idle value is continually adjusted to maintain the configured minimum rpm on the slowest motor." It warns you of this now and they have a nice little field under the PID tab to adjust (alongside some other handy motor/throttle settings), you don't have to use the CLI unless you want to. They also recommend min value of 3000-3500 RPM now instead of 14000. Love the videos, these have helped me out immensely!
@yoyomin
Жыл бұрын
Yup just enabled rpm filtering and it enabled dynamic idle automatically, and it fixed my desync at 0 throttle issue.
@TurtleModeFPV
4 жыл бұрын
Has anyone used this tune on a Mobula7?.... Does this require Bi-directional Dshot to work?... I have switched over to JESC 48khz which I believe supports Bi-directional Dshot... However the Project Mockingbird Mockula7 tune that I’m using flys really well without Bi-directional Dshot / does not use rpm filters... I’m hesitant to turn that on as I’m uncertain if it will mess with my tune... any advice would be appreciated...
@divingfalconfpv4602
4 жыл бұрын
so tested mine. props on. got 600rpm no more twitch.. 800 to 1000 rpms i can add friction with finger on prop and still no stutter.. my idle is 4.5% (4,000rpms) 1207 6000Kv 2.5" (AUW between 160gr to as high as 345gr [Hero6]) So use the 3,200 80% value or try lower like 2,400?
@mcwhinnie84
4 жыл бұрын
I’m sure I’ll THINK this has made a huge difference 😂 and that’s the important thing.
@aowi7280
4 жыл бұрын
Where's Tom?
@SlipperyFPV
4 жыл бұрын
He's late, got to give him some slack, he is a very busy bot! 🤖🤦🏼♂️🤣
@MadDragon75
3 жыл бұрын
I said it before and I'll say it again. I'm the kind of guy that a lot of people come to for answers to their questions. But I spend a lot of time getting my answers from you. Perhaps not be the same subject matter but but the results are the same. Simply because you are capable And not only listening and retaining but you also understand it and you find a great way to regurgitate the information to the newbies so they eat it. I know... that's a disgusting analogy. You know.. nature. 🐣🐥🐔 Just because you are not the designer doesn't mean that you don't have a higher level of comprehension of the fundamental principles that drive the system. We see it. We know you do. Alright. I'm done. Please try not to be so self critical.
@TheXanUser
4 жыл бұрын
Quad66 knows his stuff peeps! the 1s magician! His latest tune video taught me more than any other tune vid.
@ViperFPV
4 жыл бұрын
These are the videos I love
@brendanzaebst9011
4 жыл бұрын
As im typing could we see a few flights .... Bam!!! He says it lol. Thanks as always sir
@FPVJerry
2 ай бұрын
I always have the problem with yaw washouts when doing building dives with my Mobula7 and I found out that raising the idle to about 15%, where the quad is just about to lift off by it self, helps with the yaw washouts. I just recently got into dynamic idle but I'm still testing. (Yea, I'm commenting on a 4 year old Video)
@PAYNEFPV
3 жыл бұрын
So what is each motor has a different rpm in which it spins without hesitating while in the motors tab? For example, motor 1 is 350, 2 is 620, 3 is 900, and 4 is 900. Do I just take the motor with the highest rpm and use that?
@yoyomin
Жыл бұрын
Just had a desync at zero throttle with my 3 inch build resulting in a crash. Enabling bidirectional dshot and dynamic idle sure enough fixed the issue. Also feel that enabling rpm filter and disabling first gyro filter resulted in much more responsive flight characteristics.
@konradlindblad7860
4 ай бұрын
I have a Mobula 8 and the Dynamic Idle is greyed out in Betaflight (i have firmware 4.5 with configurator 10.10.0), does this mean that Dynamic Idle isn't supported on that whoop?
@kmarlow1
4 жыл бұрын
Great video! You would be a great teacher/professor! You are great at explaining everything. Thanks for all you do!
@wrstew1272
4 жыл бұрын
JB- if I asked a question about fc’s to the devs, I wouldn’t know what language they were responding in. You do. You are my interpreter. I thank you for having the education and experience to ask the right questions. And then the really important part, remember the answer and put an eloquent video together to let me learn something today! Esoteric at my stage of flying, but hopefully will need in the future.
@barry.anderberg
4 жыл бұрын
Will idle_min be higher with a prop on?
@JoshuaBardwell
4 жыл бұрын
Definitely yes.
@argentinaerialsFPV
9 ай бұрын
hey joshua i have a pavo25 and when punch out and drop the throttle the motors start twitching when recover the altitude and latter have this same twitches in fly! any suggestion? you are help a lot over this fpv world!
@IRONZURCRIDER9000
2 жыл бұрын
Can someone help me? Im on emuflight 0.3.4, and i want REALLY FLOATY MORE HANGTIME INVERTED. but i DO NOT WANT ANY DESYNCS. how i do it???? Pls HELPPP
@MrBirdshell666
4 жыл бұрын
i think because it is quite useless, thats why not many people heard about it. i tried it on many quads, on high powered 5" and underpowered 2-2.5". the lower power/weight ratio, the worse it gets. tried it according to the guide (0.8 of dshot value rpms) , tried rise dshot value to 9% and rpm idle accordingly, on defaults... - the result is the same. it flies almost exactly like dynamic idle =0 , but usually steering performance degrades significantly, arcs become much wider, steering at low speeds less precise. trying to compensate it with thrust_linear is to tricky. i usually set it to 4 just to make a quad more stable at long dives, but going up to 10 or even more usually produces noise in video feed. --------------------------------- i think if a feature doesnt show noticeable improvement it's not worth the hassle.
@gozillasin9934
3 жыл бұрын
I struggled with Dynamic Idle feature and burned more than 100 battery packs for test. I conclude +1-2% idle up is more stable than with this feature. Obviously, this feauture are designed if all 4 motors are equally good condition. but most of case we have not such a ideal condition except new quad and such a unbalanced motors situation we need the feature like a Dinamic idle..... When all motors are not equally good, this feature dive quad crazy suddenly while we do manoeuvre.. (BF4.2) i hoep somebody point me I am wrong.
@mattknowsnothing
4 жыл бұрын
I usually use a 6.5 to 8.5 min idle depending how new or old my motors are. Reason being I like heavy props and hate de-sinks, but inverted I fall like a brick🤣 This could help, and reckon this is worth a go for sure. Thanks...
@lukasjonusis5101
4 жыл бұрын
I didn't understand how this work and what it's used for at all from this video, nice for getting attention that this feature exists though. Would greatly suggest everyone to just read what's written in betaflight documentation about dynamic idle, it's well written and super easy to understand.
@JoshuaBardwell
4 жыл бұрын
It's really not at all, and even the people in the JESC group think that the Wiki page is terrible at communicating what the feature does and how to tune it. Please click through to the FB group link in my video description if you want to read more about it.
@lukasjonusis5101
4 жыл бұрын
@@JoshuaBardwell Ok, I do agree that it can be improved, but nonetheless it's quite clear what it does from reading it (not in a detailed manner (this I wish was explained somewhere, because it's quite unclear how exactly idle values are changing on what conditions), but in general). It's stated there that using bidirectional dshot rpm data some external conditions can be ignored for idle_min_rpm floor and thus motors can spin quite slowly without desync issues. And I totally agree that then it can get a bit tricky to think of its usefulness, but thinking about rotations it's quite obvious that slowing down a bit more some of the motors would help to make a certain moves more precise and efficient. Anyways, thanks for the video, wouldn't have known about this feature without it! :)
@genevievebetancourt6538
3 жыл бұрын
I am in firmware 4.2 and using 10.7 beta flight configurator. I tried changing idle min both thru CLI and in the tuning tab and neither approach is saving. It’s currently set to zero and I want to change it to 14. What am I doing wrong ??? I have used CLI before to make changes and it’s always worked for other features. Please help !!! Thanks for the great videos
@chriscottell6854
4 жыл бұрын
Do you work secretly at Area 51, your knowledge is impressive. Maybe that how UFO's are developed, I wonder if you could create something 🤔 a freestyle racing drone with a UFO 🛸 shaped body.
@vanofpv_rc
3 жыл бұрын
I Run a 6 inch 6s build with brotherhobby avenger v2 2507 1200kv .. I find at low throttle I wobble just a tiny bit if in coming down into dirty air.. would bumping up the idle percent make more sense in my application rather then dynamic ?
@tomijaakkola9661
4 жыл бұрын
Sorry my english.. i try to tell you this as i can. You are wrong. Its not like you said. Motor tab you raise motors to 1050 if your digital idle is 5% there you look your rpm and multibly that 0.8 which is 20% less than your digital idle rpm. That is why your method was not high enough number. I hope you did understand my english. Im much better in finnish its quite common in finland. Lol.
@airhunter4822
4 жыл бұрын
Always enjoy watching your vids, always learning something new , question - will this work on smaller quads for example say a tiny whoop , tiny 7 , quads with brushed motors ? keep well brother and keep teaching us...
@JoshuaBardwell
4 жыл бұрын
I expect it would work well on any quad, but quads like micros, where the idle speed is often much higher, may particularly benefit.
@ChupoCro
3 жыл бұрын
I have MOTOR_STOP enabled and airmode controlled by a switch. If I during flight switch airmode off and lower the throttle to 0% the motors stop but they never stall, as soon as I increase the throttle all the motors start spinning again.
@StanJanssenMovies
4 жыл бұрын
Notification gang rise up
@alessandroclaudiolonghi8207
3 жыл бұрын
Hi Joshua, I've got a problem with my Protek25 and my Betafpv 95 V2, when I fly between tries, and heppened I have to cut throttle to pass throw sometimes motor idel same speed for few seconds, I've tried to rise and again slow the rpm using the stick but nothing it slow down after few seconds and I crash on the tree.... It seems it happened when there is wind but when I fly them not beetween tries in the wind it doesn't heppened. Could it be a dynamic Idle adjustment to do? Many thanks
@djgrooverider
4 жыл бұрын
So to just distill it slightly further.it helps your quad rotate around the center axis properly(or better than normal),rather than just lift one side of the quad to rotate.its the best we can do with the design of quads at present.ideally you would have a second motor&prop on each arm opposite mounted to the motor on top of the arm.so as one side spins up,the motor on the opposite arm facing down,would pull down.therefor having an equal push to pull&properly pushing the quad around its center point.but then youd pay a weight penalty&drag.so this dynamic idle&air mode etc. Is doing the best it can with the hard/&software configuration.theres been many incremental benefits added to bflight over the years.many of which we might have thought at the time were just adding complexity.which we now consider the norm&wouldn't be without.im just wondering when/if these incremental tweaks are gonna result in diminishing returns.although I do agree with this one as d syncs & motors being able to respond and spool up quicker from a certain point of idle.is allowing for spool up lag&the lag that the pid controller/rc system as a whole introduces to be partially negated.
@imnotsure4149
3 жыл бұрын
People who disagree are not haters. That’s a very easy way to not deal with a percentage of your viewership. Offend the offenders? I think you are very smart,,, it’s just the way you go about it sometimes. Listen to the critics they actually may be asking for the same quality you want to deliver.
@windoffire8825
4 жыл бұрын
how do you download Betaflight onto you computer ?
@stevenkelby2169
4 жыл бұрын
Download it from here : github.com/betaflight/betaflight-configurator/releases
@JoshuaBardwell
4 жыл бұрын
kzitem.info/news/bejne/w3enzYR7kGZph5g
@paweugiewicz5923
3 жыл бұрын
I had less propwash without changing PID-s I have GEMFAN 5055S :P
@Sugar_K
4 жыл бұрын
The wiki has just been re wrote on this.. it not gained popularity yet as the setup was hard to understand unless you think like Thurston.. should be a bit easier to get your head around now
3 жыл бұрын
My motors tab does not shows RPM... and when setting the idle min rpm to any number and saving, after reboot it is 0 (zero) again... whats wrong?
@NotJustinFPV
4 жыл бұрын
Wait... so your saying Vanover actually pulls the stick off of full throttle?!? I don’t believe you
@aventhu1
4 жыл бұрын
I wonder what sensored brushless esc and motors would do for flying qualities?
@stevenkelby2169
4 жыл бұрын
We'll find out soon, maybe later this year.
@stratometer
4 жыл бұрын
Why is that lady peeing on your fence? Chase her away!
@magicalpencil
4 жыл бұрын
My first bit of tuning advice is always to up the min_throttle, I'm up to 16% on some builds! This helps out massively with my inverted yaws dropping like bricks :)
@prottentogo
4 жыл бұрын
magicalpencil I don’t understand. When you’re inverted and motors are spinning faster you should fall faster, not slower...
@Ozzy3333333
4 жыл бұрын
@@prottentogo Yea, makes zero sense
@FlyingWarthog
3 жыл бұрын
i try to set the idle rpm min from cli but it wont saved after restart the value still zero ? anyone ? thanks in advance
@freewi11
2 ай бұрын
Can't find motor idle throttle value in betaflight's motors tab anymore
@kyserfpv7312
4 жыл бұрын
Hello Don't forget set transient_throttle_limit = 0 for idle Dynamic
@Politicallyhomeless957
4 жыл бұрын
Couldn’t pass this one ☝️ up. Thanks for the info JB 👍
@DawnHub666
4 жыл бұрын
No idea what any of that meant . What does dynamic idle do again ?
@twirlygirly
3 жыл бұрын
Makes absolute no sense to me, I just ignored it and don't use it. I understand the theory, I don't understand how they translate to the two numbers and where to set them. I see no idle minimum value for dyanimc idle, nor any idle percentage to set for daynamic idle.
@Ender_FPV
4 жыл бұрын
BOOM!!!! Finally an answer, thank you Bardwell. I've been lowering idle min in order to grind and slide. Keep getting death rolls when smash technical flips, particularly with yaw. A tip! When mid death, roll you can shake it free by jamming yaw back and forth, then drawing it out and catch it.
@SwainixFPV
3 жыл бұрын
What you describe is almost literally what airplane pilots do to get out of a "spinning fall" (not english native, not sure how to call it) I had to higher my idle speed as a beginner at first I had no clue why my kwad death rolled, I might have a weak motor but I learned a lot with JB's videos, and I didn't get a death roll today when I did yesterday, time to tune PIDs and lower filters for prop wash now :) (already didn't get that much today with rpm filtering via a beta BLHeliS release but I didn't test it that much bc I was scared of motor desync)
@Aarons14bugs
3 жыл бұрын
Should I round up or down? Also, all the motors don't spin exactly the same rpm, so should I go with the fastest, slowest, or somewhere in the middle?
@hombredelfuturo_888
Жыл бұрын
Is this probably why DJI avata stumbles to the ground?
@kevingillett8954
4 жыл бұрын
You may not be the smartest guy, but you're a really freaking good teacher.
@stevenkelby2169
4 жыл бұрын
I'm not the smartest guy, or the funniest, but I'm also not the best looking.
@srossi88
4 жыл бұрын
Josh, it may be useful to also include this link to the betaflight wiki where there are tips for tuning dynamic idle: github.com/betaflight/betaflight/wiki/Tuning-Dynamic-Idle
@JoshuaBardwell
4 жыл бұрын
Most of the people I talked to in the linked FB thread thought that the current wiki wording was not very clear and could be significantly improved. So I prefer to link to that thread instead.
@Ozzy3333333
4 жыл бұрын
@@JoshuaBardwell But lots of us hate FacePage.
@BobSmith-jj2pu
4 жыл бұрын
Bardwell your Facebook link where the "smart guys" explained dynamic idle seems to be broken 😔
@JoshuaBardwell
4 жыл бұрын
You have to request membership to the group. It's a private group but anyone can join.
@BobSmith-jj2pu
4 жыл бұрын
Thanks I see, if anyone else is reading this you can join the group here m.facebook.com/groups/716351295566888
@GalaxystarNo1
4 жыл бұрын
How does Betaflight actually keep up, since it is for free? Do you guys know?
@tehllama42
4 жыл бұрын
The Devs are amazing. There's also a lot of active contributors - I'm impressed that four distinct FC development groups are all simultaneously achieving amazing things.
@BrainDeadEngineering
3 жыл бұрын
Cant you do this in the radio throttle curve setting also ? well some of it?
@haileviii
4 жыл бұрын
Thanks a lot no one is talking about this, excellent explanation.
@DJKUYAALLY
4 жыл бұрын
in minimum throttle, off the gyro in idle up Set pid_at_min_throttle = OFF
@cwtim
4 жыл бұрын
I'm so confused with the Idle Value. On Github I read this: You may arm with the Tx in the motors tab (after setting the enable switch) to check that the idle RPM in real world is about the same as it is when running directly from the motors tab slider. You may notice that noise from the motors will cause some variability, but the RPM numbers should be about the same. No on my quad this does not match, i'm running 8% Dshot idle value working great. When I compare, motor switch in BF or Arm, the values are much different. BF switch: 2300rpm 23-20%(-4.6) = 18? TX Arm: 3400rpm 34-20%(-6.8)= 27? And later read if you have already setup the Dshot idle value you can just take -20% from that value?? :S Wutt how? Well since there is not a clear reference, rpm idle of 18 or 27 ok? or very high
@pukki34
Жыл бұрын
Most usefull that the author himself does not even use and cant be sure how to set it :D
@Ozzy3333333
4 жыл бұрын
I will have to disagree with a few things josh, Since blh_s came out, the idle speed could be set much lower than zero trust (ZT) and not have desyncs, I personally dont think there is a reason to go below ZT, all it does is increase response time and lower stability, witch is no good. So going lower than ZT (my idle setting) is not going to help anything. My knife edge (KE) test for correct idle speed. Hover in front of you with zero wind, launch 45 degrees up and straight away from you, chop thro and KE, the quad should go straight, to high rpm and the quad will curve from it making thrust, if curving, lower to make quad go straight. This will give ZT and best response time. Any lower and hurts response time, any higher and hurts inverted hang time. If you watch a roll on a quad from hover, it does not rotate around CG, watch my how low can you roll video (parody of the dji how high can you go guys). kzitem.info/news/bejne/1qGrnZd7oqOHfKQ "IF" Vanover is at 9%, then he does not like inverted hang time. I fly with 1950 rates, this also makes it much easier to desync from reverse airflow than the slow 1200 rates lots use. Thanks for the video.
@oldfartdroneflyer3252
4 жыл бұрын
Why doesn't dynamic idle replace air mode. If not why do you need both.
@c47force15
2 жыл бұрын
Hmm so I've been setting min based on the minimum idle when armed where the drone doesn't hop....
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