Greetings.
I assignedchannel 8 on my FC to initiate FFT (rcout ch8 = 162) I took off in loiter mode and activate the channel but I am not getting any report in messages.
Please can you post your parameter file?
Greetings Andy.
Im getting the following error message
V=
Looks right. Can you post a log?
What flight controller is this? This can happen sometimes if you have mechanical noise on startup, but more likely some configuration issue.
OK in the mean time. I got the ch8 to give me FFT High and Low so that is working without the 192.0 had 50 error, this is on the ground and not flying.
I just want to run the process by you if you do not mind I have also set all parameters to default to work from a fresh sheet.
So am I right in think the steps involved are this.
- Enable FFT
- Enable Harmonic Notch Filter in Extended Parameters
- Set a channel on radio to FFT tune.
- While hovering in flight “loiter or alt hold” activate rc channel and see FFT high message.
- Fly for 60 seconds
- Land and turn FFT off via ch on Radio.
- Takeoff and peroform autotune
Step 2 should not be required - it should be turned on automatically for you.
Step 5 should be “Fly for 60 seconds and then deactivate rc channel”
It’s important that the high/low part is done while flying in a stable hover
Thanks Andy appreciate it
Question. How aggressive did you make the autotune?
I usually run autotune with an AGGR of 0.075. If you have a lot of noise (e.g. windy conditions or a poor notch configuration) then the default of 0.1 might be ok, but generally I find that overly aggressive.
Morning Andy.
Would you mind taking a look at my parameters. This is initial Autotune on roll and pitch before using FFT.
I am quite happy with the ptch but I feel like roll can calm down just a smidge but overall I am happy with the results.
So a couple of questions. Do I have to make the roll and pitch values the same and do I need to round the numbers.
If this is what autotune gave you then I should leave them alone - roll and pitch do not need to match
Your harmonic notch setup says it is disabled so the FFT tune has not worked
I did not enable harmonic notch for first autotune.
Is it neccesary to enable FFT for regular flying?
No. FFT tune will give you throttle-based notch settings which you should use for autotune and flying. Once you have those settings you don’t need the FFT anymore
OK then I can do a secondary FTT autotune now?
FFT tune is not the same as autotune. But yes try it - you should get notch settings that then help with your subsequent autotune
Yes I do the FFT tune hovering for 60seconds and then turn off and then autotune again as per the previous messages
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Does FFT tune do anything else apart from benefiting autotune once the frequencies have been identified by it?