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PID Tuning Masterclass - Part 2 - D Term From Low To High 

Joshua Bardwell
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Let's take a look at what low and high PIDs do. This will give you a perspective on what to change when your copter is not behaving the way you want it to behave.
In this video, I explore the effect of low and high D gain. I also tell you how to recognize excessive D gain.
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Watch all the videos in this playlist here: • PID Tuning Masterclass
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This playlist will culminate with my 1.5 hour PID Tuning Masterclass presentation at the NYC Drone Film Festival on March 18, 2017. (Note: the presentation will be March 18. The video will be uploaded some time later.) In the mean time,
The copter is running Betaflight 3.1.5. The copter is the AllcarbonRC Coyote. goo.gl/Fe7dtQ

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11 сен 2024

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Комментарии : 293   
@vision60s67
@vision60s67 3 года назад
Watching this 3 years old video demonstration is still so helpful! Jushua, love your fancy skirt :p
@fpvbros6901
@fpvbros6901 3 года назад
lol was gonna say something about the skirt as well
@GadgetInspector
@GadgetInspector 7 лет назад
I will refer to you as Professor Bardwell from now on.
@spartanash1
@spartanash1 6 лет назад
XD
@edgarreyes4815
@edgarreyes4815 3 года назад
He is so good teaching stuff, I actually enjoy learning from him.
@oxgon
@oxgon 7 лет назад
the whole video I was wondering how you did such good voice over work, soon as I saw you talking into the camera while it's on the ground was amazed at the microphone quality. fantastic video.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
I am wearing a ear-set mic and I have an H2N recorder in my pocket.
@damedaE90
@damedaE90 7 лет назад
Joshua Bardwell Josh, one question... Does ur mic on the copter need a additional circuit inbetween the Video Tx and the mic itself?
@Medil30
@Medil30 7 лет назад
Alright i watched all these about 3 times and the black box videos twice. I am about to tune for my first time now that I have better weather here. Can you just let me know if I have close to right. 1. Lower D a bit and P. Then raise P till you get oscillation. 2. Then raise D till that oscillation goes away 3. Then Tune I to feel or where it is not moving. 4. Then when you feel everything is good you can raise p gain more to see if you like the feel better. I think it would be best for me to start with low settings to see whats happening when I increase things.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+Mike R that's a good summary.
@StacemanFPV
@StacemanFPV 7 лет назад
Really enjoying these. I am actually starting to make some sense of this. Can't wait for a nice day to go out and just do some tuning sessions.
@DashzRight
@DashzRight 7 лет назад
i just became patron , because as you said the value of the knowledge you spread is much worth than 1$ a month. Futhermore I would say the amount of money and time you make people to save has no price.
@adrianantones4909
@adrianantones4909 7 лет назад
for a begginer that haven't fly a quad , yet i still manage to understand the point. verygood tutorials keep it up more power sir Josh!!!
@adamkelly6264
@adamkelly6264 7 лет назад
Dude puts on a literal masterclass for PID tuning, gronks still ask what he's wearing. smdh
@HerbsmanRevs
@HerbsmanRevs 7 лет назад
Interesting stuff. Not sure I've ever seen so much D gain. Amazing that it takes it so well.
@quadcopter3603
@quadcopter3603 7 лет назад
Haha 12:13 that's exactly what happend when i was frustrated because of seeing no difference and setting the D up to 500. Luckily I was able to disarm
@AndySevern
@AndySevern 7 лет назад
Josh, this is a GREAT series.I'm re-tuning my quad later this week after switching to Blheli ESCs from my ANCIENT Turnigy Plush ones - so will be watching these a few times again! :) Keep it up. Oh, and on the boring subject of clothes, that's actually the first time I've seen you with your alternate attire - TBH I was more interested in the quads than the threads. You know what, I think it actually suits. I had to go back and watch your video on the topic 'cos I though you'd gone all Scottish on us! Dare to be different - only the BRAVE show their true selves.... and not everyone can pull that look off.
@zaniix11
@zaniix11 7 лет назад
This is eye opening, I would never have gone that high with P or D as I was taught to keep P & D gain much lower, but now I need to see what happens if I bump P and D up much higher. time to experiment
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+Zaniix_FPV time to experiment! My favorite phrase.
@TibordeGoede
@TibordeGoede 7 лет назад
Looking forward to your Masterclass on the I Term. Not much videos online about that part of PID tuning. For the rest. Good work Joshua!
@rarespaul9503
@rarespaul9503 6 лет назад
Outstanding video and nice dress
@BMathiesen
@BMathiesen 3 года назад
Joshua you need to make your kwad build shirt available in a hoodie! Or just some type of cool ass hoodie! I need to represent my community, my hobby and an idol of mine Joshua haha!
@bradleyhirst4019
@bradleyhirst4019 2 года назад
Dude love the vids but are you really wearing a sun dress lol. Looks freeing and refreshing. Keep up the cool and informative vids I've learned almost everything I know from these vids. Thanks a million
@doktordrone
@doktordrone 4 года назад
thank you very much, JB :)
@strattonford2557
@strattonford2557 6 лет назад
HE'S WEARING A KILT I LOVE IT
@beardedalienfpv1294
@beardedalienfpv1294 4 года назад
I think thats an Egyptian robe lmao
@iameliop194
@iameliop194 3 года назад
hahahhahha that's crazy
@ChinesFPV
@ChinesFPV 4 года назад
Are you wearing a skirt? Thanks for this series because I have been struggling with PID for some time.
@2whitedudes442
@2whitedudes442 4 года назад
+1 on if that is a skirt.
@uavr1286
@uavr1286 3 года назад
Dressing gown/bath robe?
@TheCoreys
@TheCoreys 5 лет назад
Is this skirt common on men in the US?
@shatterpointgames
@shatterpointgames 4 года назад
No just him
@JasonMcIntosh876
@JasonMcIntosh876 3 года назад
Thanks JB for another very helpful guide.
@chemistt
@chemistt 7 лет назад
You were saying something bad will happen with high D values (Ive commented in previous videos about I like the strapped tunning cus I am paranoid). Well what happened to me is on old CC3D mini F1 board - after arm it was OK but as you added Thr and moved a hair to roll, quad started to SWING it self till it flipped and then it smashed anything in its way (I have a scar). It is small tarot 200 but it is a rocket. As far as I could understand - what happened was it got stuck in D loop and just "snowballed" till it flown 100% on some motors. It was happening because of new cleanflight that was somehow creating an error on chip. If I am wrong, Ill be happy understand.
@megaeniotna
@megaeniotna 6 лет назад
''Warm motors are normal, Hot motors are abnormal'' for those who were wondering. You can pinched warm motors and hold your fingers there compared to You want to take your fingers off when a motor is hot.
@roscofpv2357
@roscofpv2357 7 лет назад
@Josh, You really learned to land since your last "PID TUNING" videos. :)
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+RoscoFPV nah, this is always how I land.
@ThePromptWizard2023
@ThePromptWizard2023 7 лет назад
This series is freakin' amazing bro. Wow you really needed high D to get that sound I have heard with the D in the low 40s. QUESTION sir! How does prop size, generally speaking, affect D? Do 6" props usually have lower D than 5" props? Also, how about motor size? Do 2205 and 2206 have lower or higher D, generally, than say 2207 or 2408?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+Sadistic Leprechaun larger props spin up and down slower, so you need more D gain to get the same propwash handling. But larger props also make more noise so you may need to keep D gains lower.
@BenjaminKing1
@BenjaminKing1 7 лет назад
need more!! (I can't wait another day haha)
@rogue-tr
@rogue-tr 7 лет назад
That's good stuff, exactly what I wanted to know. Greatly appreciated.
@joseluisg.r.7055
@joseluisg.r.7055 7 лет назад
Very good videos Joshua. In Spain we hope you subtitle videos in Spanish or English to understand everything. Thank you.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
You can submit subtitles to any of my videos and I will approve them. www.wikihow.com/Contribute-Subtitles-to-Someone-Else's-RU-vid-Video
@ProppedNutFPV
@ProppedNutFPV 7 лет назад
It's a Sarong. Other names in eastern cultures Veshti or Mundu.. by the way thank you Joshua for this video. Only being in the hobby since mid summer of last year the information you're passing on is clicking. Could you please touch on rates as well. So we can get a better understanding on the correlation between PIDs and rates?
@PilotPlater
@PilotPlater Год назад
Looks like u have a bottom mount battery in this video. Why did the industry move away from bottom mount batteries? Almost never see it now
@MadMarcWinnipeg
@MadMarcWinnipeg 7 лет назад
Thanx Joshua. 👍😊 I got my first programmable fc the other day for my tiny whoop. So now I'm getting my hands dirty. A beecore f3 evo. Questions: - What are good pid gain values to start tuning with on a brushed fc like the beecore ? - What is the best silicone wire to use on small 1S batteries (replacing connectors) and for power to the flight controller? (bottle necks in mind, also weight and flexibility) Thanx Joshua
@zenkinsw
@zenkinsw 7 лет назад
Just one suggestion do the same P and D testing under strong wind 😉
@Levytan1
@Levytan1 25 дней назад
Hey JB i just got a whoop bnf with around 47g with a 550mah battery to be exact it is the Whoopfly16 by sub 250 and thats the pid's for it. It came that way thats their cli. Isn't that to high D-Gain especially. It is both high 90 and over 100. Can you help me. I pretty new in the hobby looks to me they want to sell more motors that way because all beginners like me won't notice and burn out their motors. Whats the deal here do you have any guidance? set p_pitch = 80 set i_pitch = 143 set d_pitch = 103 set f_pitch = 142 set p_roll = 76 set i_roll = 136 set d_roll = 91 set f_roll = 136 set p_yaw = 76 set i_yaw = 136 set d_yaw = 0 set f_yaw = 136
@yalmadiable
@yalmadiable 4 года назад
Hi josh Would that PID tuning procedure good to use for quads that used for inspection for example? I was thinking in the video about keep raising D gain but what it look like if you lower P to 60 and kept D on 20?
@tannerbeard2840
@tannerbeard2840 7 лет назад
Ive never tuned D beyond 25...
@alexgri7625
@alexgri7625 7 лет назад
Hello Joshua! Thank you for your video. Very informative and helps to understand the settings kvadrocoptera. One request in this video does not work subtitles. Please correct.
@shawnhannah3320
@shawnhannah3320 7 лет назад
yes Daniel the Thrust Riot 250 is amazing just got to figure out what's up with my goggles assuming module at this point
@MojoPapiFPV
@MojoPapiFPV 7 лет назад
At what point and how do you address Yaw D? I usually do full yaw LOS and bump it up until it stops jumping but not sure if this is the best strategy.
@Alex360Videos
@Alex360Videos 7 лет назад
good vid josh, very helpful. you know a lot about pids haha
@skyweaver3199
@skyweaver3199 3 года назад
Professor Bardwell...Is that a Kilt you were wearing?
@GibsonLesPaul2273
@GibsonLesPaul2273 6 лет назад
Im wondering if all this wobbling is down to balance cos I have an unusual racing quad (camera mounted on top with a servo) and I get no osculations at all, I can descend in my wake with zero wobble, no wobbling on sharp turns flips and rolls and its default PID settings.
@StoneyGrooves
@StoneyGrooves 7 лет назад
Did there happen to be TPA on the tune? If so I think that could have reduced oscillation on the wide open throttle. Maybe you could do a video on a low vs high pid's and how tpa affects each one. Really enjoying the content you create.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+spurr nationfpv default TPA is 10%. That's what I used.
@rollins360
@rollins360 Год назад
Josh my new build has the SpeedyBee f7 v2 With the motors XINGS 2207 1800kv seems like it’s having a hard time lifting up and left shop but it feels like there’s a lot of weight. I haven’t messed with a PID’s yet.
@shawnhannah3320
@shawnhannah3320 7 лет назад
hey Josh I sunday I was flying and my diatone tyrant video was great until I took off then I lost signal at less than 20 yards. so yesterday I attempted to fly my Thrust Riot and it did the exact same thing not complete signal loss just terrible quality have you had this before ? thanks a ton your the best
@danielpassmore5026
@danielpassmore5026 7 лет назад
Shawn Hannah sounds like it almost has to be your transmitter. Do a range test. How do you like your riot? I love mine.
@rogue-tr
@rogue-tr 7 лет назад
Shawn Hannah I'm guessing you mean video signal ... and with two separate VTXs it's unlikely they're both faulty unless you cooked them with no antenna or sitting still with battery in for too long. Some cheaper VTXs are more predictable at failing. Otherwise a weak battery or antenna on your goggles might cause it. Also, if you continually fly in the same location, scan the frequencies if you can and make sure you're not overlapping. One location I fly at has limited distance due to an audio/video transmitter for pay TV at the RSL near by. Generally it's fuzz but occasionally I get the boxing :S
@brianbutcher7409
@brianbutcher7409 7 лет назад
Hi Josh This video is very helpful, I am wondering if you have ever seen a flight controller run away (keep rolling when control input is released) caused from bad PID tuning. I just re-used a flight controller Betaflight F3 AIO running d-shot 600 in a new build, it was working fine in the original frame. It flys amazing motors are warm but not hot but once in a while I will do a fast roll and it does not come out of it when I remove the roll command, it keeps rolling, I can hear the motors winding up and down gently and rolls real smooth all the way to the ground. Had anything like this happened to you????? BTW I was using stock PIDs and then reduced all PID values by 10 points and problem is better but now I get a big bounce at the end of my rolls.
@nickelindgren
@nickelindgren 7 лет назад
Great video! This will help me alot!
@fsfpv3524
@fsfpv3524 7 лет назад
Hey Joshua, great video (as always ;) ) I have two issues :/ 1st I cant "save my log to file" from onboard flash (newest config and BF fw) and 2nd I have a little bounce when doing a hard roll to the right and sometimes when flipping back. But its not really a bounce, its like the copter stops to early and wants to correct it, so that the end of the flip/roll looks unsmooth. I already played around with my D values but it is always there :/ Also I played with the D setpoint weight/transition but it doesn't help very much. The strange move is still there. S any idea whats my problem? And why cant I save my logs from the FC to my PC lol Otherwise I would have send you a BB log. Thank you! (FC is SPF3- Aikon SEFM 30A DShot300 - EMAX RS2205(not S))(Motors get hand-warm, not hot, and my Setup is not very noisy)
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
You have tried everything I would suggest. You can try adjusting P and D to minimize the effect. Remember also that you can move the sticks more smoothly to reduce or eliminate it.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
So turn off the notch filters then?
@fsfpv3524
@fsfpv3524 7 лет назад
That's what I want to try tomorrow. Had the same idea a few hours ago, thank you! Let's see if that will work
@fsfpv3524
@fsfpv3524 7 лет назад
I can't solve it -.- And I can't get the answer why it is withour a BB log I think, but if I want to save the file, no window opens where I want to save the log or anything. I tried it with 2 pcs, both don't save the log :/ But it must be an issue from 3.1.6 because with 3.0.0 (on an other quad) I can save the log.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+FS_FPV of you this you've found a big, open a github. Issue.
@metazootet1492
@metazootet1492 4 года назад
Still so hard to understand..... :(
@platty9237
@platty9237 4 года назад
Phuong Ho it may help to experiment with these settings in a simulator like velocidrone or liftoff. That way you can test them yourself. Some additional steps are mentioned on this other web page oscarliang.com/quadcopter-pid-explained-tuning/ I think bardwells videos show the effects really well, but if you need some more info or suggestions on the actual process of elimination, the link might help.
@kalliber
@kalliber 7 лет назад
HI Joshua, the preset pid from stock Cleanflight naze firmware 2.0.2 on my own build 250/naze32/ is unstable. I managed to get the I gain as low as 2 for roll and pitch and yaw untouched. quad is flying great but after some aggresive acro flying, and flicking back to angle mode, quad flips or tilts uncontrollable. (I want to flick to angle mode to sometimes save the quad from over rolling or pitching when I loose orientation) what could be the problem? thanks in advance, Omer
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
I don't know, but if your I gain is 2, something is not right at all. 2 is way too low. I don't fly autolevel so I don't know a lot about tuning that. I do know that the accelerometer can sometimes lose orientation after aggressive moves. It sorts itself out in a short amount of time but if you flick to autolevel immediately after aggressive moves, the accelerometer may be confused. But I don't know what the fix is.
@thiagogssantos
@thiagogssantos 7 лет назад
very very good
@slothFPV
@slothFPV 7 лет назад
If i have really slow bounceback on flips and rolls what is that? D is getting kinda high as is P
@pivoglotik
@pivoglotik 6 лет назад
Link at the end of video leads to part 1. Should be part 3.
@kenaidiaz8009
@kenaidiaz8009 3 года назад
Should I put on slightly damaged props or brand new ones when I tune my quad?
@psydafke
@psydafke 7 лет назад
Hi Josh, For a stretched X, wouldn't roll P gain typically be lower than pitch? I.e. on my Alien, Pitch P is also slightly higher bc of the more spread mass on that axis (I think). Looking forward to the next episodes in this series! Happy flying!
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
Yes. I was just raising the values in lockstep for demonstration purposes.
@schumata3356
@schumata3356 7 лет назад
Another good one
@mbezik
@mbezik 4 года назад
joshua rocking a rotor riot skirt ;)
@mmusic9194
@mmusic9194 3 года назад
This is with engine breaking on?
@sulan91
@sulan91 7 лет назад
Wouldn't it help to lower the pid/gyro loop to 2k or 1k help demonstrate the high-D effect you are looking for? As I believe a faster loop makes it harder to see?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+sulan91 that's an interesting question. I don't know.
@aw8one
@aw8one 7 лет назад
Just did a rebuild 2207 five s copter. Stock pids roll seems to have all the aighna of to much d term motors are extremely hot mostly the rear ones. Always seems like to much d term but stock pids seems a bit strange.
@shawnhannah3320
@shawnhannah3320 7 лет назад
also keep in mind I fly at my house all the time 41 acres in the middle of nowhere and normally we fly 200 yard circles
@henshaw7
@henshaw7 3 года назад
umm whats with the dress !?
@TheHeliman9
@TheHeliman9 6 лет назад
I have a basic knowledge of betaflight I can set up install and get my Quadcopter flying but understanding the terms and what they do is a little bit in the gray area as I have not seen anything on betaflight Wiki if there is any links to any one explaining what these are that would be helpful thanks and you have awesome videos
@rcwck
@rcwck 7 лет назад
Stock Beta PIDS much lower(specially P) and smoother.
@alexeyterenik
@alexeyterenik 7 лет назад
Nice dress bro :D
@MrJacobbbo2
@MrJacobbbo2 7 лет назад
From your stick movements it seems like your rates are fairly low but the way the quad behaves it seems like they're high'is. Are they actually higher or lower than stock?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
My rate is about 1200 dps at full stick deflection on pitch and roll, and 800 dps on yaw. Bear in mind that the stick overlay is showing rcCommand, which is the stick input AFTER expo or s.rate curve is applied. In reality, my sticks are deflecting further than you see, especially when deflection is low.
@alexdij4025
@alexdij4025 7 лет назад
I assume you are running the T-motor F40 II 2400kv motors that you used in the build video? And you said you used the Strix Talon props but what size? Reason I ask is because on my quad (Emax RS2205S 2600kv on 5046 Dal Cyclone props) I am running P in the upper 30s (36 and 40) and I see you taking them up into the 80s yet I could never get mine that high. Is it possible that they are actually too low and need to come up past a certain point or is that just normal for a higher KV setup with heavy props?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
Some people prefer lower P. How does it fly? You can do the same exercise I do here: raise P 10 points at a time and see how it changes.
@alexdij4025
@alexdij4025 7 лет назад
Well I think it flys pretty good. Not particularly bad. However I just don't like prop wash oscillations and it seems when I raise P it just has too much oscillation for my liking. I mean I'll accept a reasonable amount of prop wash but whenever I use a higher P it just seems to oscillate. And I think the Blackbox data kinda backs that up. The gyro traces are very clean but the PIDs and motor outputs seem to have a lot of high frequency noise, i.e. ossilation but no matter how low I go with P it doesn't seem to go away.
@JC-zg2id
@JC-zg2id 7 лет назад
What props are you using in this vid? King Kong 5x4's or 5x4x3?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
These are Strix "talon" props.
@surfmaxinbama
@surfmaxinbama 7 лет назад
half way thru pt.2!! lol!!!
@Neon8787
@Neon8787 7 лет назад
I got a Wizard X220, but the gyro is kinda bad and I seem to get a lot of vibration in the frame. The default tune on BF 3.1 gives crazy oscillations at high throttle. O rings and your videos are really helping me try to tune around the problem! Thank you so much!
@BetterIntegra
@BetterIntegra 7 лет назад
Put the TPA breakpoint at 1790. and the TPA at .22 that is for the full throttle punchouts. Here is my full setup( a good start for you) Wizard x220(2205 motors) - 4s liPo - XSOUL 5040 V2 props. Betaflight 3.1.5 Pgain [roll 47] [pitch 60] [yaw 79] Igain [roll 41] [pitch 49] [yaw 45] Dgain [roll 23] [pitch 24] Throttle MID [ 0.44] TPA Breakpoint [TPA 0.22] [Breakpoint 1790] My Rates - RC rate [p/r 1.25] [sr 0.75] Expo [ 0.23] - [ yaw 1.20] [sr 0.65] Expo [ 0.20]
@Neon8787
@Neon8787 7 лет назад
Thanks!! I'll give your setting a go this weekend!
@Neon8787
@Neon8787 7 лет назад
I must have read your PIDs wrong and ended up with 79/45 for my D gain on Roll and Pitch!! It was ridiculous, but my own fault. Your changes to TPA Breakpoint really helped, I think. :) Thank you!
@BetterIntegra
@BetterIntegra 7 лет назад
haha, sry it might have been a little confusing the way i wrote it. I increased my tpa to .24. but it still wiggles a little. I may go to .26
@saggynun1802
@saggynun1802 7 лет назад
since upgrading fto r4 returner 2300kv motors from rs2205 I've found they are usually warm on landing doesn't matter on 4s or 5s same warm. high pids lower pids, still same warm. not hot. but never nice and cold.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
Well maybe they're just running warm. As long as they don't get hot, just fly.
@TheHeliman9
@TheHeliman9 6 лет назад
is there a reference section or glossary section for the terms used in betaflight especially in the PID tab to help me better understand what each thing does thank you
@JoshuaBardwell
@JoshuaBardwell 6 лет назад
No, not really. :-(
@tchthsky
@tchthsky 7 лет назад
What do "hot" motors equate to in degrees fahrenheit? Thanks.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
Let's say 60 C at most.
@LachlanPeknice
@LachlanPeknice 7 лет назад
Are you going to do a part 3 on I term? Very helpful and informative, thanks! Also, at 10:30, can you please explain how the excess D gain causes video noise? Another question, you linked a video in the comments on how to change PID in flight via a switch method... How do you get it to show up on the OSD, like in this vide, and are you using the same switch method?
@sebastiannobody1142
@sebastiannobody1142 7 лет назад
As the esc gets tons of input to change the speed extremly often (caused by noise amplified by too high D) also the current jumps a lot. that causes Video flickering as the becs (5V and 12V) get problems.
@LachlanPeknice
@LachlanPeknice 7 лет назад
ahhh thanks. I had no idea!
@sebastiannobody1142
@sebastiannobody1142 7 лет назад
Also it might be possible, that the high frequency changes somehow radiate to other the video and power lines of the Cam+VTX system. But I didn't find proof so far...
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+Sebastian Nobody the ESC's object electrical noise back into the system when the D term tries to oscillate at high frequency.
@bruceheck9342
@bruceheck9342 7 лет назад
How are you changing the pids in the field?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-JpnCMLmxme0.html
@damedaE90
@damedaE90 7 лет назад
Bruce Heck Give RU-vid a try.. Search for luascript taranis 😊
@jonhoyles714
@jonhoyles714 7 лет назад
most likely a feature of the OSD
@jefefpv1695
@jefefpv1695 7 лет назад
Bruce Heck I am running BF 3.1.6 on a Flip32 F4 Omnibus using BF OSD and it has on the ground PID running and in flight PID tuning.
@bruceheck9342
@bruceheck9342 7 лет назад
THANKS I'LL CHECK IT OUT.
@plainuser48596
@plainuser48596 7 лет назад
Wouldn't some of the propwash be caused by yaw not being tuned? I got the impression there that it actually did oscillate on the yaw axis during sharp turns - but I'm inexperienced.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+z p gain on yaw is not low enough to get sloppy nor high enough to encourage propwash oscillation.
@wyyaly
@wyyaly 7 лет назад
My quad(CC3D+ZMR250)has a strong oscillation when hovering with a low P and D gain, with PID roll 20 40 15, pitch 20 35 15, I start to increase D gain up to 70 along with a little P gain up to 30, the oscillation by hovering and turing decreases but is never elimated. What should I do, should I continue increasing D gain or should I check the other parts?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
If you have oscillations in a hover, something is seriously wrong mechanically. Those PIDs are not extreme enough to cause any serious issues in a quad with no mechanical or electrical issues.
@larsfpv5657
@larsfpv5657 4 года назад
Why do I still have a lot of bounce back
@TheHeliman9
@TheHeliman9 6 лет назад
and or do you know if anybody has made a video explaining what the terms mean and betaflight thanks and as always happy ripping
@SmokinMesa
@SmokinMesa 7 лет назад
I'm still getting propwash oscillations on fast tight turns. Is it ever possible to tune these out completely or could vibrations through the gyro be the cause? I can't seem to tune them out with the PIDs
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+Smokin Mesa it's often not possible to completely tune out propwash oscillation.
@Caileanrogers547
@Caileanrogers547 Год назад
I have the same problem
@DJPAKK1
@DJPAKK1 7 лет назад
Joshua, is there a link to a video explaining how you are changing PID's in the field? Sorry about the newb question ;)
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-JpnCMLmxme0.html
@DJPAKK1
@DJPAKK1 7 лет назад
thank you!
@DJPAKK1
@DJPAKK1 7 лет назад
thank you!!!
@MrHugs17
@MrHugs17 6 лет назад
Hi Joshua! I am getting vibrations when I drop the throttle to min (and a little video noise) on my 6" running 6045 triblades on a finx 40 2607 1500kv wraith 35 amp blheli32 set up. I assumed this was D term after watching this but I have bumped it up a bit with no improvement. Looks like it is something in the active braking. Any advice?
@JoshuaBardwell
@JoshuaBardwell 6 лет назад
Can you show me an HD video fo the problem happening? Preferably with no background music just motors and wind :-) Email me the link because I might not see your comment here.
@MrHugs17
@MrHugs17 6 лет назад
sent you a msg through Google messenger. thanks for checking it out. i expect some vibes on 6" props, but this seems like something different. big caps on the battery lead and the escs. the zmx finx 40s are giant motors.
@MrHugs17
@MrHugs17 6 лет назад
i will post it here too... ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-HECXavaW31U.html
@colelandreneau304
@colelandreneau304 7 лет назад
great series so far. Question, so when i start, I drop the P super low and D at zero. Do I leave I gains where they were at stock or what should i put them at. Thanks man, cant wait to go out and tune my "Ghettocopter" now.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
It is almost always the case that default P gains are lower than I will want, so I don't bother dropping them. You might want to lower I gains from defaults, but you can't know where I gain is going to end up until you get P dialed in.
@colelandreneau304
@colelandreneau304 7 лет назад
Thanks
@PippoFPV
@PippoFPV 7 лет назад
You're a boss, thanks! :)
@dcfpv5608
@dcfpv5608 7 лет назад
How hot is too hot for the motors? I have my D gain at 30 for both pitch and roll and I can feel my motors are warm but I wouldn't say they are hot. Also, does the D setpoint weight and transition sliders cause any extra heat depending on what they are set at?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+DC FpV higher setpoint can cause a bit more heat due to D term kick. If your motors are warm but not hot, you're fine.
@dcfpv5608
@dcfpv5608 7 лет назад
Joshua Bardwell Thank you!
@frinky
@frinky 6 лет назад
DC FpV If it's to hot for your fingers. It's to hot for the motor
@Reecefpv
@Reecefpv 4 года назад
My prob is when I drop throttle after a punch out in wants to flip forward and I'm trying to correct instead of whatever trick I had planned to do
@JoshuaBardwell
@JoshuaBardwell 4 года назад
Make sure Air Mode is enabled to keep orientation when you drop throttle.
@Reecefpv
@Reecefpv 4 года назад
@@JoshuaBardwell airmode is on I'm gonna do some tuning u covered my prob on part 4 at least I think it is your was dipping the same way
@AlvinYeoh
@AlvinYeoh 7 лет назад
How do you define a hot motor?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
At the very least, you should be able to pinch it with your fingers without it being painfully hot. But really, most modern motors are not very over-taxed, so if at any point, the motor crosses over from warm to hot, I would be suspicious of the tune. If you have been doing full throttle 100 mph drag strip runs, then that's a different story, but for normal flight, I would expect the motors to be no more than warm under most conditions.
@humbertocortes68
@humbertocortes68 6 лет назад
In what place of beta flight u hubicate the third value of ur. Numberd... I not speak English so well... I listen :T gain... Is the rate valuenumber? Or superate valuenumber? Sorry if im missed. Thanks in advance...
@JoshuaBardwell
@JoshuaBardwell 6 лет назад
+Humberto Cortes sorry I don't understand
@humbertocortes68
@humbertocortes68 6 лет назад
Thank you for answering me ... Congratulations for your hard work and for sharing ... I see that we are several passionate about learning this hobby thoroughly and not settle for a little .. Je. I am starting and my question is the third column of numbers that you. Varies and changes the value ... to which numerical data corresponds in the PID setting of betaflight ... Thanks
@jefefpv1695
@jefefpv1695 7 лет назад
I have been flying an F3 chip with standard blheli and oneshot125 on my xHover. I recently built an Alien RR5 and I am running an F4 chip with 8k/8k DSHOT600 using FVT Littlebee Spring dshot ESCs. With default BF PIDs in 3.1.6 I noticed all four motors were equally warm but not hot. I cannot fly every day so my next chance will be Friday so I can finish my tune. I noticed most of the time you comment that your motors are cool. Just wondering if warm motors are normal as well? I am running the Lumenier 2206-11 with the proper screws and the ESCs are insulated from the frame.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+Jeff C warm motors can be normal. Remember it's winter here. That affects it.
@jefefpv1695
@jefefpv1695 7 лет назад
Thanks for the quick response.
@saltvatten
@saltvatten 7 лет назад
Hi Joshua. Love your channel. So much great info. Could you please explain why a high D term could cause hot motors?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+saltvatten d term amplifies vibration. When D is too high it creates a feedback loop. D term tries to make the motors respond to the amplified vibration, which creates more vibration. The motors can't move as fast as they are getting asked to move, and heat results.
@saltvatten
@saltvatten 7 лет назад
Hi, thanks for fast response. Does this differ in any way from hot motors due to high P term oscillations? I mean motors get hot due to high power output regardles of whats causing it, right?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+saltvatten no. P term oscillation is slow enough that the motors can keep up. It will only make the motors hot if they are overpropped. D term is too fast for the motors to keep up. It's like rubbing your hands together slowly vs really fast. Really fast makes them hot.
@saltvatten
@saltvatten 7 лет назад
Oh I see. So the motor output from the FC changes too much too rapidly. Could this also hurt the ESCs due to higher back EMFs from the motors?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+saltvatten it can cause desync. It shouldn't damage the ESC's though.
@veit5256
@veit5256 4 года назад
Is it normal that my copter needs 50-60 P-Term?
@notkira_x
@notkira_x 4 года назад
yes
@JonTatumFPVAHOLIC
@JonTatumFPVAHOLIC 7 лет назад
quick question?? are u using tpa during all this or did you disable it?
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
+Jon Tatum default TPA
@william_2233
@william_2233 6 лет назад
Should we have a lower d gain on yaw or is it just personal preference?
@JoshuaBardwell
@JoshuaBardwell 6 лет назад
There is no D term on yaw in Betaflight. Not since 3.0 or maybe even earlier.
@metazootet1492
@metazootet1492 4 года назад
So once you get a good pid tune. Will you have to redo it on new motors?
@bkmahaffey
@bkmahaffey 4 года назад
If you replace with the same motor then no. If you change KV or stator size most likely.
@airexfpv1596
@airexfpv1596 7 лет назад
Thanks Josh ;-)
@grandykim
@grandykim 3 года назад
Are you wearing a dress?
@necro_nemesis
@necro_nemesis 7 лет назад
At 2:37 you mention how you aren't experiencing oscillations when you are climbing and descending with power changes. It appears your attitude is fixed when doing this. Since this isn't a pitch or roll change and isolated to application of power I don't believe your pitch and roll PID settings would have any effect on that aspect thus the reason you aren't seeing any effect from the settings..
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
That's not the case, because environmental factors are causing forces on pitch and roll that the PID loop must respond to.
@necro_nemesis
@necro_nemesis 7 лет назад
Please explain environmental factors as it applies to varying thrust to all motors uniformly. The four rotor are counter rotating to nullify yaw and only effectively move the thrust vector for pitch, yaw and bank when power is applied in a dissimilar manner.
@Gweniman
@Gweniman 7 лет назад
On my wizard, I put the same pid that your tutorial... and when I putt over 50% trottle their are some vibrations on my quad... What should I do ? (Sorry for my bad english) thx for the answers !
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
You cannot copy my PIDs to a completely different copter and expect the same results.
@MrCarter24
@MrCarter24 7 лет назад
what should I adjust to fix mid throttle oscillations, it's a new quad and I can see oscillations when Cruising around.
@JoshuaBardwell
@JoshuaBardwell 7 лет назад
ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-zdE1BidMwNU.html
@robbinkoot2154
@robbinkoot2154 5 лет назад
My 2 inch keeps pitching back (or wobbling) after a dive. What I've to do?
@JoshuaBardwell
@JoshuaBardwell 5 лет назад
Some things that help with this are... Switch to props out rotation instead of props in (also known as reversed prop direction) Raise D gain to reduce propwash. Raise I gain.
@CF_Joel
@CF_Joel 3 года назад
Put it up to 500.
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