Need help with analyzing the log file after crash

ArduCopter
1

Dear all,

I am new to Ardupilot and Mission planner.

I wanted to perform a hover test with my first build and suddenly my drone shut down in air after a few seconds. The first thing I checked was the battery voltage, but it seems okay for me. The vibrations are different on the X and Y axes, but are still quite low.

My drone is a standard 4 motor build running on an 8S battery. The FC is a Mateksys H7A3.

Unfortunately I run out of ideas or how to debug further my crash, so for any idea I would be grateful.

Log files: https://drive.google.com/file/d/138gohYIJurQqMfKLEA1FjjYiLj_QD05P/view?usp=sharing

2

That problem is typically because you forgot to configure the altitude controller on high powered vehicles.

So… what configuration procedure did you follow?
How sure are you that you did not miss a step?

3

The rates and parameters you have set for a first flight are not correct. Those PID values look like they are from chatGPT or youtube. Either way, they are crashing your drone and costing you money.

image
image786×465 96.3 KB

Reset your parameters back to the default and follow the ArduPIlot Wiki or use the AMC

2 Likes
4

Yea, nothing right about the configuration here. Well OK, the Servo_ parameters are correct…

Where is this Sensor Rate logging coming from in INS_LOG_BAT_OPT? Some bullshit YT video? It’s rampant.

The answer to what configuration procedure was followed would interest me.

3 Likes
5

@dkemxr We need to zero in on the source of these configuration nonsense. Only then can we do something about it.

3 Likes
6

Thank you for your answer. You are totally right, I did not configure the altitude controller. For some reason I thought that in stabilized mode it is not mandatory. I was trying to follow Chris Rosser‘s tutorials on youtube. Also, I tried to go through the Ardupilot documentation.

7

At the beginning I was following Chris Rosser’s tutorials, but I also read through the Wiki. I had problems with the default PID values, the drone had huge oscillations during hovering. I tried to lower the PID values by 10% until the oscillations started to disappear.

8

Avoid using Chris Rosser ArduPilot tutorials, they have many errors and inconsistencies. We already contacted him about it and he choose to ignore us.

The solution is:

  • Use the official ArduCopter wiki and read it all very carefully and follow every single link to every single subpage, or
  • Use Ardupilot methodic configurator software to guide you step-by-step in a linear way, making sure you do not miss any detail while only presenting you with information that is relevant for YOUR vehicle.
2 Likes