Holy shit after 112 black box logs and small adjustments reviewing logs, turning the ESC PWM frequency from 24khz to 16khz made this thing fly so amazing. No other changes and it went from borderline un-flyable to a tune I could get from a prebuilt. Thank you so much
I have had my 7 inch Banggod for approx 10 months now. I thought it was flying well, then I flashed it. Tried old tunes, fresh tune, and even your preset. Nothing felt right. Then I followed your video to a T and and OMG. So this is what a good tune feels like? ABSOLUTELY INCREDIBLE. Thank you Mark
Thanks Mark! I just used this and some of your other 7 inch quad / betaflight guide videos to complete the tune of a new Rekon7 I'm building (not a ready to fly quad). This thing was all over the place when I just finished putting it together, and I was unable to tame it down myself. Using Zues F722 flight controller with the Betaflight 4.3 firmware image it came with. Followed your advice I enabled bidirectional DShot (Zeus 60A BLheli 32), changed PWM frequency from 48KHz down to 24KHz , and fetched your 6-7 inch quad tune preset, instantly got much much better results.
@@ToneVisionTonstudio I actually reduced ESC PWM frequency to 24KHz. in addition, after posting this I also reduced the master multiplier in PID tuning panel from 1.5 to 1.1, this improved flying smoothness even further.
thanks for the video! It is weird to have a 7" setups run well on stock BF a year ago, but not with the current RC's.. relatively easy to tune away (the wobbles) though
FYI - For most ESC's that are stuck in the 48khz+ range. sskaug has or will on request release a "half-pwm" target. You can flash that target and any displayed pwm is cut in half. So, if you select, 48khz, for example, it will be 24khz. And 48khz - ByRPM does actually work as 24khz - ByRPM. It's a custom target so you have to grab it from their GitHub repo for your ESC though.
So I just flashed my troublesome 5" from BLHeli_M to Bluejay and it completely fixed the slow wobble I was getting and couldn't tune out. Thank you! This is why I support you on Patreon, the work you do for us is priceless.
Thank you for sharing the final tune with us! Glad you liked my comment haha. Actually I wonder if you are planning to tune out the leftover oscillation I was also talking about? This is how far I got too, but the remaining (on your mostly roll, on mine actually it is more on the pitch angle) oscillation is something I could not figure out. Looks like we should higher the P term but I am in the 80s already with like 65 D, worrying about the motors already. Any thoughts?
Holy s#%t.. I didnt even know about the presets feature until yesterday. Been i while since ive used betaflight😄 Was gonne try to tune my 7inch, since ive been struggeling with alot of vibrations and oscillations. So I updated the FC to 4.3.1 and i had to try your preset and oh my. Now my 7" fly smoother then any quad ive ever flown (and its over 1kg with battery and gopro). Thank you so much!
Thank you for this. I've been dealing with slow wobble on my FR7 for a minute and didn't realize the higher esc frequency caused it. I also have the same shake in forward flight that drives me nuts. I hope you address it so I can get a solution. If I could get this thing to fly like it did on bf 3.5.7 with all the new features of 4.3 I would be stoked.
spent 2 hrs today trying to get rid of yaw twitch with the sliders in 4.3.... all i had to actually do was lower P and I on yaw only. I got 1 battery of actual flying before it was to dark. your toothpick preset works amazing on my apex mini 3.
Question nobody is asking though. Who is this aqua quad for though? Like is it about to be a product from some new quad company or just someones personal project.
Yeah, like the whoops, the 7" hate the wind. All the tuning should start from the blheli, the start-up power is essential setting especially on off-size quads. The 4.30 gyrocode is really good, like, really really good. I keep saying that and I mean it, it's very apparent when you try to push the quad into the wash.
I still have a minor fundamental disagreement on the PWM frequencies - 48kHz really can work extremely well, even on softer rampup power settings that reduce overall low end authority (especially on D term) due to reduced braking - I realize that effect tends to be deadtime multiplier dependent, but honestly I haven't encountered a 7" setup that I can't tune very well around the limitations of 48kHz PWM
I just see the wobble control is so much harder with anything higher than 24khz. :-/ Idk. Folks can try both. I have tuned a 7" at 48khz too, it is just harder.
Are you running those super long antennas you showed at the start? I would guess that a lot of the shaking could be due to low frequency vibrations of those antennas.
Very useful thank you. My issue on my Chimera7 is little wobbles while cruising straight, low throttle and linear. Barely visible flying but more evident once you watch the air unit video. Il, try excluding one of the gyros and see what happens.
Hi, i have 4unit 7" Quadcopter, three of them already pass my personal record in 10km, 11km & 12km journey with 20-24km in total, all in BF 4.2 versions and in every new build i use default 4.2 Betaflight PID Tuning and all the issue is the same, Wobble, then i tune the P&D term at first to get the lock feel, after that i concentrate on wobble by punch the throttle then release it, all same problem : Wobble, then i move the the I-term to the left become 0.8 using slider, all the wobble problem completly gone, maybe you can test it for my reference, this is the setup : *. Betaflight 4.2, PID tuning : -. Master Multiplier : 0.8. -. D-term : 1.3. -. P&D balance : 1.5. -. FeedForward : 1.5. -. I-term Relax : 15. -. AG Gain : 7. *. BL_32 setup : -. Ramp up power : 19. -. Demag : Low. -. Timing : 19. -. PWM Low : 48 -. PWM High : 48. For your reference : 1. 10km journey : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Pi2j17T2dSk.html 2. 11km journey : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ySBvXENS33s.html 3. 12km journey : ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-dlpwG76BGs8.html
Heya - love your 7" videos so far. Are you planning any video on "conditions specific" tunes, maybe on patreon if not youtube? I personally find myself never able to get a mother-of-all-tunes. Someone I always manage to be in conditions where either wind, altitude don't necessarily work perfectly for my tuned-in-a-park type of quad. When flying from remote/far locations I don't necessarily have time, laptop or simply enough packs to adjust the tune for these conditions. So if there was like general rules on how to somewhat blindly modify PID's to adapt to whatever conditions it would geat. Specifically, wind and altitude, can't think of much else really. Keep it up, cheers!
One thing I have found out is the best way to increase frame rigidity is to use the shortest standoffs you can get away with and make sure to have as much of the thread full as possible.....apparently vibrations are really good at traveling through the hollow portion of standoffs.....I use your tips for ESC settings and dropped it to 16k, added your 7" pre-set and it was better but still had a bit of jello....switched from 30mm standoffs to 20mm standoffs eliminated the jello
Thanks alot for this comment. I have been fighting jello in my 7" iFlight XL7. I actually put taller standoffs in it so that I could fit a 30x30 VTX on top of my stack. After what you've said I can see that I need to go back to the shorter standoffs and the carbon camera plates as well. I guess I didn't realize how much rigidity you lose with the taller standoffs and no carbon cam plates but that almost has to be what my issue is because I've tried all the tuning stuff.
Not understanding the question/statement. 1. Obviously, it matters who you are racing against. I'm sure it was not folks in the top 50. 2. ButtF is Beta with a different logo. Also way dead project not too (because a sham), so doesn't matter. 3. if a lot of long runs in the track (less technical) 7" is faster than 5"
Yea I ended up going back down to 24khz to help with wobbles. & slowly messing with p&d. I'm using a poorly design 8" I did.. 😆 I'm running inav on this
If you set low to 48khz there is no point to set it to by PWM because there is no variance between 48kHz low and 48kHz high. It does the same. Variable PWM frequency only make sense when low < high.
Thanks Mark! She's flying way better. I did notice when on throttle there were some vibrations looking at the light poles. Anything you could do to fix that? J/W
You would probably be surprised how much less of an oscillation you get in the step response when basement tuning a powerful racing rig and comparing 16 vs 48kHz low. Not only the big boys profit from the torque generated in the lower end. It's just more obvious because of the slow wobble. The next benefit you get is a powerful braking force on 16kHz. I think a lot of racing pilots, especially the very quick ones are not aware of that.
@UAV Tech I get horrible noise and smoked a motor with your 7" settings and same with my own settings aswell as other 7inch pid and filter presets. smoked a motor idling props are just going nuts and gave it a bit of throttle and smoke. but the vibrations are so bad. was fine on 4.0.6 now i'm having such a hard time with 4.3 have to filter the crap out of it. now i'm getting wobbles after swapping motors esc and FC still did the same thing as far as noise and hot motors after the swap but then did filters. idles ok and thottle up vibs noise gone but flight i take off and wobble city.
Keep filter sliders low. Apply my 7" preset and lower Mater so that D-gains are no higher than 35. If you still have an issue, you have a mechanic problem you need to sort out. If that flies, then work to bump up Master.
I’m brand new to all this. I used your 7” preset in BF 4.3 and I noticed my motors got pretty hot literally after a 10 second test hover. What should I change to fix that?
I yaw right when cruising. Tried playing with anti gravity but I think it’s something else? Any suggestions on what to try? I have a source one 7” frame. 2407.5 1622kv motors on a hobby wing 60 a and radix v1 Fc used your pre tune and it’s close but not quite smooth enough.
Also if you have an old bmi270 flight controller your motor would vibrate no matter how much you tune it try replacing your flight controller with a recently released flight controller, older flight controller have bad PCB design and have less noise tolerance.
I suddenly got this issue of wobble. Identical. I use 840g auw apex 6 with 2408 motors. 6s. Wobble wobble wobble. Bf 4.3 rc3 and Rc6 tried. I can't fly the quad. Also, on low throttle, it barely stays in air... What to try...
I have 7-in wobble constantly. I know my motors are undersized but even when I have zero throttle she just wobbles floating through the air. I can't stand it I don't know how to get rid of it
For something like a rekon35 or an eachine lr3. What tuning approach should I have? Should it be treated like a big quad or a small quad? thanks for your help, i love your videos
Thanks Mark just put your BF4.3 preset for 6-7”… on my Chimera 7”now flys so smooth and responsive and slightly longer flight time … just wondering if you recommend adding the crossfire preset… I have CF diversity nano but a bit confused about locking 150hz or 50hz for long range Thanks for all your help 😊👍
@@sickshots hi there I just installed BF4.3 loaded Mark Spats 6”-7” preset so what ever that makes the filters ie I didn’t touch the filter and left the PWM.. at 24hz😊👍
I'm having issues tuning my new 7". Oscillations on forward flight with throttle, or horizontal while flying forward. So you suggested TPA for this? Will try the PWM freq and see if it improves
wobble or shakes? Wobble: you need to make sure on 24khz PWM and then move up Master Slider, and possibly reduce Drift-Wobble slider. Shakes: try different props; HQ tri-blades, test with NO wind day. If still no go, try 48khz PWM. If still no good, your motor bells may be off balance, bearing issue, or your frame is not handling motor vibrations well and magnifying them. ALSO make sure you camera sensor is not the issue. Does HD match FPV for seeing shakes.
I typically do not unless i want to re-jigger things to suppress D-gains. For a 6" not so much unless I have vibration issues I need to cover up (not ideal). For a cinelifter, YES in some cases because D-gains typically need to be very high.
I'm having trouble with my 7" freestyle build - horrible oscillations in forward flight. They completely ruin footage despite gyroflow's best efforts. 2807 1300kv motors and around a kilo auw. But I ran 20% ramp-up and 16-48 PWM frequency. I tuned the esc, and I'll try it again on weekend. Apart from that it flies just perfect on stock bf 4.3
@@uavtech oh.. so it's just unbalanced props? Why doesn't it show at any other throttle position? And can you recommend some props that don't need much balancing, or any at all? I tried dalprop cyclone T7056, gemfan flash 7040-3 and 7042-2
Hi thanks for the video. I'm new to quads, under a year flying, and i just built a yakuza shadow with 7" arms that was gifted to me. Used BF4.3 on the supafly 7 preset but have tons of vibration. Im thinking its cause i used bi blade props. Have ordered tri blades to see if that work. If not going to try your pwm freq adjustment and then you tune. I dont really understand tuning at all so preset loading and your video will be my go to. If you dont mind checking out my video i would love to hear your opinion.
Hey boss I just built my 7in an I did what you suggested an when I arm my drone with no throttle it flips out crazy. I will sit an idle for few seconds then it does it again
@@uavtech I’ll double check again once I get home. I’m using a iflight blitz 55a stack and I made one fetal mistake before I started changing stuff and I didn’t save the factory setting on my computer can I still get them back. The blitz F435 doesn’t have firmware on Betaflight yet so flashing my stacks isn’t an option for me.
Hello! I have a strange problem with the pid tuning on a 7 inch quad. in simple words when I add Feed Forward it starts to oscillate and if I remove the FF completely the oscillations disappear. What does this all depend on?
@@MrBiaggio89 whatever RX link you are using, apply the corresponding Preset for it. If still oscillations, make sure the ADC filter is on in your Radio (assuming an firemware OpenTX radio)
Hy im new to 7inch quad, my problem is hard to maintain forward movement and its like so hard to drive, my motor 1650kv and 6s lipo 100c 1500mah ,what is your option bro?
How about the rpm filter activation is it mandatory (in the preset )? My motor getting hot fast when first hover i mean when i just fly my quad for first with stock pid before your video
@@uavtech im not sure ,i think my battery placement also make it worse ,maybe my lipo is to close to the tail ,still not put any gopro and the battery also to light weight
This video is perfectly timed, I’ve just built a quad using an iflight stack and it’s got these damn slow oscillations off throttle and after flips and rolls, I’ve tried adjusting everything and they just will not go away… I can have perfect PD ratio for flips/ rolls and it just stays there, I managed to reduce it significantly with 0.2 iterm and then off throttle the drone just wanders… I have Jazz Maverick on the ESC but it doesn’t give me the option to adjust PWM, I’m wondering if that’s causing it because I’ve tried three different motors, two different props and two different frames and it just will not go away.
Great video, I 'm a noob, built my 1st qav250 quad, I have the same problem, my quad slowly moves up &down, by a feet or so. Also quad drifts always towards the left, though it stays leveled, if I move my stick to compensate, it gain moves to right if i leave the stick. I thought betaflight automatically takes care of this. but crashed my quad a few times.
it will drift unless you are on INAV with a GPS unit; which is not a place to start. You can never get perfecically level in BF to not have some drift.
По мне основная проблема на этом кваде это вибрации сильные от моторов рамы пропов и в первую очередь надо избавляться от них. У меня никогда 7ка так плохо не летала. Даже с плохими пидами.
Thanks mark im trying your preset for 7” on my apex LR flies pretty good but im getting a little frequency frame noise or something about 1/4 to 1/2 half throttle any recommendations on what to try & adjust ? Thanks for the great videos
@@uavtech Hi Mark, i installed your preset for 6-7 inch on my chimera 7 i also tested it on another 3 quads Rekon 7 (Motors-Xing2 2809 1250kv, T-Motor F100 and Avenger 2810 1500kv. Battery 6s 5000mah. TBS Crossfire nano RX Divercity and the same for all with wobbling ((((
chris rosser did a vid on pwm and has said a variable pwm freq. doesnt lose much torque if its set 16/128k or 24/128k. trying to get my roma v2 to fly well. has some bounce back on pitch. roll and yaw seem fine. no dipping on thrusts , sounds clean and very little prop wash. some wobble on pitch as i descend. its my first time trying to tune at all. using sliders. still on 4.2
Hi, I have exactly the same oscillations on my 6inch apex with f90 1500kv motors like in the end of the video, Iterm doesn't do absolutely anything to it. Both betaflight and emuflight doesn't make sense on this oscillations. I'll try to decrease pwm frequency but do not think that it's the reason for that. The most strange thing that it's all okay with traces in black box viewer
Then a frame issue or electrical. It is a tricky thing to tackle "The Shakes" as you have to pin down the source. - props? - frame? - electrical noise getting to gyro?
Thanks for the video, good info! As I thought - there will be small shakes/jello on forward flight. I would really love to see if you can tune them out, so plain forward flight becomes smooth. After all this is definitely a cruiser and it's supposed to fly straight most of the time. Right now from my perspective, those shakes are impossible to be fully removed by tune, because it's a physical property of the frame + motors + props combo
