Yes! This was exactly my problem
If you use the Full Parameter List then one will have graduated from Novice.
1 Like
If you use AMC you get the defaut value and the version dependent parameter documentation on mouse over. Plus cyan the background color.
Mission planner shows you the master documentation, not the one from the version you installed, as far as I know.
Also this. Learn to use the parameter list. The sooner, the better.
1 Like
2 Likes
I mean yeah, I did most of the configuration from there itself, but used the Mission Planner helper and the PID tuner tab for those stuff. Then used AMC to verify stuff and make changes to some parameters as I only learnt about the existence of this tool later
1 Like
Now, Iâm facing with an issue with the drone where if I put it in AltHold, it just shoots up and wonât come down unless I disarm it. Good thing I did it indoors because one time it got stuck up on the ceiling lol. There is a potential thrust loss (3) which I guess is due to a bad motor (bent shaft, plus the props and hence the shaft have some free play even after fully tightening the props and holding doen the motor bell with my hand). Iâll replace this motor in a week. Also the propeller on the 1st motor also has a chipped tip on one blade. Should I replace that too or can I live with it? Here is the log of the very short flight:
Thanks
You had RPM filtering working but completely disabled now, please enable as suggested
Check arms twist, motors connected to outputs 11 and 12 are working harder. That can be CoG if iâm wrong in numbering.
There are still ESC protocol errors on 2 outputs as discussed before, please check you wires or replace it to thicker ones.
EDIT: arm twist
No, no, I did not have it enabled in the original log
Well, yeah I have no means of actually centering it but considering I have enough power, I donât think I should worry about much right?
That copter wonât fly on LPF only.
The problem with CoG or arm twist that noise is much wider because motors rotate at different RPM, and itâs harder to filter.
Well, I did. To gather initial data. Check my first log
Do you think it could be vibe levels as high as I have seen them, ~700 clipping events and battery sagging to ~3V per cell? Output oscillation and maxed out motor outputs.
Hmm, what could it beâŚ
Yes, that is the case
But to give you context, the very first log in the question section of this thread was done without any filtering and you can agree that the vibe levels are pretty good for this frame than what people make out to be. In that flight I suffered a crash and the first motor shaft is slightly bent. I only noticed this a day ago. Then @Yuri_Rage suggested to remove the earplug mounts and hard mount the Pixhawk and analyse the vibes after this. So in the process of doing this, alt_hold mode made by drone shoot up of theground and the third motorâs prop has a chip and this is causing vibration on that motor which I can see. So yeah I agree I have to replace the prop and the motor. As for the battery, it is Li-ion.
But,
Where can I see this in the log? Is this because of the bad motor and vibration?
By graphing the RC outputs. Iâm wondering why you would post this log at all. Whatâs the point with a bent motor shaft? You could have started a new thread titled âwhat happens with a bent motor shaftâ.
Those are the motors that use collet prop adapters?
But, letâs add some value to this post for the benefit of others:
Before this, I used a lower qualit set of props that were unbalanced and with those, I saw these same vibrations on almost all motors given I provided step inputs, but I did not have the potential thrust loss (3) warning and it definitely did not shoot up wihtout control on althold. So the point was to know the root cause of these two issues are some config issue (maybe an ekf3 clash with GPS no fix since Iâm inside while performing this flight).
Yes they use collets. But they worked okay for the first flights with these new props
Yes, the reason I want to fly again (pribably after replacing the damaged parts now) is to do FFT to analyse the frequency I should be filtering out. Although now I think that shouldnât be different from the first log as the peaks are due to the blades passing over the arms. Am I right?
See Vibrations:
Diagnosing some common problems.