As I thought, this only works for Gyro tuning since Spirit takes the value of the channel as is and doesn't scale it.
However, taking Cyclic Rotation Rate as an example. Valid values for this parameter are from 5 to 16, so if this parameter was set to in flight tuning, -100 on the channel in the TX would translate 5, and +100 translates to 16. So having tuned it in flight, you would be able to know from the TX the output of that channel, but then there is nothing to take you back to the Spirit's scale.
Furthermore, for some parameters Spirit allows values that are not recommended, Cyclic Rotation Rate is an example where values over 11 may results in boom strikes etc. So to limit this possibility, it would be necessary to limit the channel output to be within a reasonable range for tuning.
To make this a little easier I have create an excel spreadsheet (attached) that easily converts the scale from the TX's -100 to +100, to the appropriate scale for the parameter and also to give an equivalent to a desired max value. So for instance if I want to tune Cyclic rate and limit the values to between 5 and 11, I would need to limit the channel's max output using function curves.
I think there is room for improvement here. At the very least the diagnostic page should give the equivalent value of a parameter based on the channel value received. That way once tuning is complete, and say I find I arrived at a rate that I like, I would be able to look at the diagnostic tab, take the value and enter it and then remove that tuning parameter.
| Attachments: |
Spirit Jeti Parameter Tuning.xlsx [9.22 KiB]
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