Pixhawk 2.4.8 F330 quadcopter log/build review

Fair enough but since my FC and frame are also a decade old, I thought there is method to that wisdom

Mount as I suggested and do a test flight (in stabilize). Look at the VIBE values in the log. If they are less than 15 across the board, you are good. If there are spikes, share the log, and we can suggest mitigation techniques, the first of which is always securing loose wires and anything that could vibrate in the rotor wash.

Your frame is indeed less than ideal, but that doesn’t mean we should start with band-aids.

Okay sure, thanks. I got less than 10 for pitch and roll and I think below 15 for altitude (can’t inspect the logs right now) with the earplugs. Anyway I’ll try with the new mounting now :slightly_smiling_face:

You’re at ~8-20 across the board. Secure those wires leading to the autopilot a little better. They are pretty free floating.

1 Like

Actually I had them tightly clamped at the bottom right arm except for one temporary ground wire (for the gps). But yeah you’re right, I guess I cut a little too much slack

Can someone send the default PID values? I don’t know if I messed up but now with the new build I get potential thrust loss on althold, but no problem in stabilize. But I don’t seem to be losing altitude during the “thrust loss” period

You can run MP in simulation and will have spare drone which you ever can fly.

AMC shows you the default of each parameter in it’s mouse over tooltip.

And if the parameter has the default value it’s presented in cyan. So it’s very fast to see which parameters are not default

1 Like

Didn’t understand the simulation part. I haven’t read the docs but as I currently understand, it is mostly to check the software functionalities and won’t model things wrong with my hardware right?

Why not? Mission Planner Simulation

It won’t simulate your particular drone but you can simulate different failures and how it act with settings you have. I just thought that you can check default pids and settings there but it also visible in full parameters list.

1 Like

This. Just do this.

All other solutions mentioned here, while valid, are several steps more complicated than simply referencing what’s already available in your connected Mission Planner session.

The parameter default values are different for each FC board. You can only get them by extracting them from YOUR flight controller.

AMC does that automatically for you.

The vibration is due to one motor shaft being slightly bent. There’s also some free play of the shaft, like if I fully tighten the propeller, I can rotate the prop a bit to either side even while holding down the motor bell. I guess I’ll have to replace the motor if I cant straighten the shaft. The bit of free play might not be a problem right?

Okay, that’s interesting. Why would it depend on the FC? I would’ve thought it would only depend on the firmware version?

Nope. It depends on both.

Okay I’m just asking because this piqued my curiosity. Why should the PID gains change with FCs? Shouldn’t it only be depending on the build and the software?

The default gains do not change per board. Other default (primarily hardware oriented) parameters do.

It’s possible one might find that the OPTIMAL tune changes on a per board basis due to measurement differences. You’d have to be pretty dialed in to notice this.

1 Like

Like @Yuri_Rage said, PID default values do not change, but other parameters do.
Some change depending on the compile options. Some might change if you overwrite their value while compiling.

That’s correct, but you need to know parameters names. Novices usually use GUI and configure PIDs in Extended Tuning tab, but it’s not clear what parameters are really changed, it would be good to have the real parameter name if you hover over label, same as you get description if you hover over value itself.