Man, great tuning video. What's been more impressive to me lately is seeing how much your flying has improved. I have been watching your channel for a long while now, but I swear it's like something clicked for you recently. Must be those 3 pack a day videos and the focus on racing. Lookin good on them sticks brother!
...joshua - this series is an order of magnitude better than your other really good stuff...superbly done and hitting the right technical level and language, that makes this real life applicable for many more of us... well done :-)
Hi Joshua, when looking at stick tracking I find it can sometimes be a little misleading if you have expo on in BB explorer because the scale is different close to center stick. I don't think it affected you though. Did you feel like you had a little more confidence in that final rip? It looked awesome!
This is one of those things where it seems like it should be really easy to set a threshold where if they're too far out of whack at least you throw an error in the OSD. I realize the argument that you can't know which one is correct but you should at least identify the problem.
@@JoshuaBardwell Out of interest, what two gyros do you have on yours and which one is messing up? I'm seeing similar things on my flight controller and quite a few other people have the same problem with the board...
Hey man I just wanted to thank you for all the great content and videos you make and how you have really helped me make my decision to take up fpv as a hobby.
After all these videos from Chris and BJ people just don't have excuses anymore like "i tried to understand but still could not understand anything" :)
Wow, this video really really shows how different people gear is..my moongoat frame with tmotor f4 stack and my 2207.5 cyber xing 1999kv 6s motors allows me to push them sliders WAY more than Joshua can with his build...im pretty sure i could push the master multiplier to 2 with no problems! simply amazing..coz i know our Josh dont use crappy gear! Ultra stoked with my quad :)
Here I am flying kiss defaults and enjoying the hell out of it. Never was tuning obsessed. I may have to take these vids for my betaflight rigs and give it a try!
As a developer it feels only natural to explain that providing sliders is a "convenience" to set multiple value from one place. As such proving 10 sliders often overwhelms (think old synth interfaces) and thus the modern less-cluttered UI style won out. However, this means that in general the amount of options provisioned is clearly limited and often end up simply being an average ratio of the relative ranges - as would appear to be the case in your PID sliders. What does this mean? Type in the numbers, the reduced range of options is not because that range is implicitly "best" it simply represents the average across the ranges. "Sticking to the sliders" does not make sense when viewed with this developer perspective. Hope that makes sense; Helps; And didn't sound too pompous.
Chris didn’t talk about I-term relax but he did mention I-term. The reason he uses the master instead of just PD gain slider is to purposely increase the I-term as well. He says that higher I is more stable at high speed
You were doing OK up to the point you started raising FF. The PD balance you've found at that point is good for keeping the quad under control with respect to small external influences (ie not stick movements). At this point you should transfer your D settings to Dmin and only then start raising FF. You WILL see overshoot, but that's OK. Keep raising FF (a lot!) until your tracking is good and then raise D to kill the resulting overshoot. You can tune the Dmin advance etc. to surgically hit that overshoot. You'll find then that prop wash is squashed way better.
I dislike flying with dmin unless it's absolutely needed because it introduces uncertainty / unpredictability to the flight characteristics. But your advice seems sound and I might try it in a future video.
Hi Joshua, for those who are racers and have to finish the race with a crooked propeller, is it a good thing to deactivate the D-min? couldn't the motor burn before the finish line? thanks
Not sure why no one mention radio signal frequency and good high kV motors? Together with low latency filtering and high pids THAT is closing gap between gyro and setpoint even with default ff_boost =15
hi can someone please help! i have a moblite7 and had to do a few repairs on the motors due to stuff getting tangled in them and motor bell magnets coming out which i somehow found and replaced but for some reason my quad will no longer fly. I have checked all my config etc even did a flashware on blheli config. All motors are working correctly in betaflight all fire up perfectly motors correspond with the quad diagram etc. I have found the problem but dont know how to fix it. When i power up motor 3 in betaflight it makes a different noise to the other motors. all motors sound smooth then motor 3 sounds a bit rattly. I also powered up the motors on betaflight with the props and found that air was blowing underneath all motors expect 3! the air was blowing upwards and this is why my quad wont lift from the ground just spazzes out and flips over. please can someone help.
The lag recorded on the gyro on stick return while doing the FF tuning, could that be caused by motor/prop inertia not being able to dissapate fast enough to match the set point?
What about the filter sliders? Do we slide the filter sliders to the right like we usually do with rpm filtering or is that not necessary since the filters are already so low.
There are no sliders in this case because the filters have been manually set up. Disabling the gyro lowpass entirely is saving latency similar to moving the sliders right.
How in the heeeeeck do people figure this shit out? lol. The more stuff I read and watch about pids and motors, the more worried I am about getting a desync or having problems.
looks more like a d-gain thing around 3:44, a super-easy way to pin that down is to temporarily set feedforward transition to 50% that will then outline the change on one end more than the other. (if the transition is moreless the same after, its D not FF) or just increase both FF and D (if your filters allow it)
This is so crazy I been in the fence to buy one of.this kits and build I'm pretty good soldering anything with electric.. and stuff so I'm pretty sure I could do this..but what really drive my adrenaline is the flying Thru anything and so precise is like if it wasn't in the air u know cause is like if u hit brake stops .. don't know how to explain.. just insane. Now question a budget drone like that u recommend? Where do I download all the computer software or applications to see and do what u do ? Thanks
Hey Joshua! I'm doing some tuning on a slow AF 7' rig and following these videos along with advice from some friends. I see a similar trend with feedforward and returning to stable input having more discrepancy between the gyro and the setpoint. I'm curious if thats because of the rampdown time of motors, as it seems more prominent on A: returning to center stable flight and B: larger platforms with more inertia in the motor/prop. Do you think enabling motor braking in BlHeli would help close that gap? or is that gap due to something else I'm not seeing? Thanks!
@@JoshuaBardwell But brake on stop is off by default, is that only for when the motor output is zero? I thought that affected the entire throttle range
Brake on stop is not the same as ESC braking. Brake on stop means the ESC actively brakes the motor when at zero throttle--useful if you have a glider with folding prop and you want to be sure the prop doesn't freewheel in the wind. Not relevant to multirotors.
@@nullx8 depends how you define efficiency, ussualy the goal is to track a reference but for long range flights the ammount of energy used to track the reference is more importand than accuracy (to some degree). I guess a good rule of thumb is cooller motors => more better as less energy is used. as long as it is stable and performs good enough
I need some 5.8ghz giant tall antennas that i can install on the roof of my house or some kind of extending cables i want to make my room and house a ground station anyone no how i can achieve this thanks
Thank you i have for coming back. I hope im not going to be hack as the page you shared was unsafe but i got your detals i hope you got my message. Thats right cc3d is way outdated but i cant afford the fancy thing you guys play with so i have to struggle on with what i have and you inspire me so i thought let me get in touch.
WIFI runs at 2.4 ghz and 5GHZ which is what most VTXs use(5ghz). If you want a control link at 2.4GHZ you can get Express LRS 2.4ghz, or you can go with 800mhz for even longer range with Expresslrs(800), or crossfire runs at 800ish mhz. You could also use TBS Tracer for 2.4
adding more and more sliders, paramaters etc do not make it easier especially for begginers. You still need to know some dependecies - if that response then move that once of that parameter.
No it doesn't, but if your learning to tune drones then nothing makes it easier accept for good tutorials that explain what's what and why their necessary. Time and patience. Everybody comes into this hobby from a different mental place, therefore what they bring with them is different as well. If you have little understanding of physics and engineering then your going to have a bigger hill to climb than someone who has a background in them. Delving outside your comfort zone is uncomfortable and frustrating at times but you gotta just keep at it and push through that barrier. Learning is easier if the subject has context and relevance. What better way to learn about science stuff than the awesome platform that is the fpv drone. Maybe rockets. Their cool too.
@@MrTimmyGT i got plenty of flight time... have to fly to tune... i mean if you don't get flight time cause you're too busy kissing bark... well then... no amount of tuning is gonna help you. you may as well go stroke it.
@@MrTimmyGT it’s for content on his channel. Yes I know pilots that are obsessed with the perfect tune whatever that is lol! Funny how my default tune appears to fly better than friends I fly with after hours if tweaking. I chalk it off to skills at the sticks over some magic tune that’ll give you mystical abilities.
@@creationlabsinc.189 It's called maintenance... When you have several quads of several sizes from micro to 7inches... They practically all fly the same... Unless you drastically change thrust to weight ratios, a micro is gonna fly like 7inch which is gonna fly like 5inch. If you cared about maintenance like General Aviation, over crash rebuild crash rebuild crash rebuild crash rebuild... You might understand what getting flight time means... Several Air Disaster episodes from Smithsonian Channel showing how lack of maintenance got people killed... The point is to FLY...
This whole pid tune series has been a disaster , from the stream fail , to your loose strap causing jitters , and now the defective gyro. You should have just started over new quad new part1 etc. and not tried to manipulate the remainder and just get it over with , very disappointed in you joshua.
I think there is a lot of value in showing how things really go in the real world, rather than throwing out a situation because it didn't go perfectly. You say I'm manipulating the result but wouldn't it actually be manipulation to throw out the result because it didn't go how I expected? Somewhere out there, someone else has a bad gyro and now they know what it looks like. Instead of saying, this tutorial is useless because things always go perfectly for experts. If you want to see a perfect classroom tutorial look at Chris's videos. The whole point of my video was to show what actually happens when the rubber meets the road.
Great vid again, thanks Joshua, both you guys disable d-min and don't re-enable it, is it best not to use d-min nowadays? Has that been the case since rpm filtering or something and I missed that news?
Chris's argument is that dmin introduces unpredictability to the tune and so he likes to try to leave it off. Dmin can be useful but it's also just one more thing to try to tune.
