Hi!
I have a quadcopter where I had made a succesful autotune with 2306 sized 1750KV motors and 5x3.1inch props.
I need to change to motors to 2306 2400KV and the propellers to 5.1x4.5inch.
I’m sure, I will need to re-perform PID autotune. Is this correct?
Do I have to change the previous PID values before I take off with the higher KV and higher pitch propellers?
Thank you!
I would lower the PIDs at least by half. You are putting more powerful setup, so with current PIDs it will overshoot probably very badly.
In fact safest might be to start from default initial values.
The AMC software contains documentation for this exact use case in it’s use case documentation page. Check it out.
Thank you @Adam_Borowski !
Yes, changing everything back to default is also an option.
@amilcarlucas
Can I use AMC on a setup, that is already configured with MissionPlanner?
To be honest, I have never used AMC, I just read about it.
Yes that is another documented usecase of the software,
How to create a vehicle configuration based on a correctly configured vehicle documented on the same usecases documentation page as above.
Thank you @amilcarlucas !
I may loose my AMC virginity today, after work 
Use some lube 
I have to reset the following parameters, right?
I would have to check which params are in “Extended Tuning” tab in mission planner, but I would add altitude controller too - hoover learn and PSC_ACCZ_I and PSC_ACCZ_P
Thank you for the AMC tool!
I was able to use it, hovewer I have a couple questions. (Ardupilot Methodic Configurator questions)
Unfortunatelly the drone was oscillating at the first flight (Step 17). I kept in the air for a couple of seconds and I was already landing (not by LAND mode) - when the capacitor on the ESC exploded, the drone felt down from 40-50cm.
I’m going to continue, once I replaced the capacitor with a new, stronger one (low ESR, higher capacity)
Oscillation:
If I understand correctly I had to manually edit 16_pid_adjustment.param file (decrease pitch and roll P and I components by 50%) and upload to FC via Mission Planner.
The first flight is to be done after step 18.
Yes, and then upload them using AMC, not MP
I hope You also changed D params.
AMC presents all the required parameters in file 16.
If he uses that file, he will be able to reduce the D as well.
Yepp, step18, Notch filter setup, you are right.
“Notch filter results” screen is the step where I stopped until I fix the drone to be able to fly again.
Thank you for helping! I’ll come back once I will have chance to fly again.
I have done the flight with Quicktune LUA script. I failed to save the values with the script, however I tried two different ways…
I have the .bin file and I saved the Messages from Mission Planner.
Can i just write the values from Messages into AMC and save them with AMC into FC?
I assume, this should work, but I ask the Experts, before screwing up something 
(right now I don’t have .bin with me, I’m from my company computer)
No need for that . AmC asks you if you did finish QuickTime and when you select yes, it automatically reads the parameters from the FC.
Did the FC saved the quicktubed values to somewhere, even I failed to save after quicktune?
I have landed the craft, but on messages screen i the FC told me, the quicktuned values were reverted.
I’ll try to save it one more time when I get outdoors.
No, if you failed to save the values, you should for safety reasons repeat the flight.
Remember that you need some wind disturbances, but not strong winds.
Yes, quicktune needs some wind. How will quicktune perform if it’s not enough air movement?
If I understand correctly, it’s a mandatory step, so I can not skip it and move to autotune (that needs almost zero wind).
If the vehicle is well built, and there is no wind, QuikTune will set unrealistically high PIDs that will crash the vehicle.
If the vehicle is not well built, then it will work fine because the vehicle itself vibrates a lot.
