Spirit System

Hi Matthias,

Unfortunately no further troubleshooting from my end, The ask from the ethos/frsky thread is to try and reproduce it on an fbus servo or ""another"" fbus platform, which I do not have at my disposal.

For now I'm skipping CH12 in my ethos mixes and all is fine.

Hi Matthias,

Connecting a servo directly to a rx port ch6 does not exhibit the issue.

ZeXx86,

Please see the attached of the ch6

While the travel is smooth on the TX side the receiving end shows the non linear signal represented in the logs

Can you let me know if what I see here in the logs ...

Hi Mattes61,

The freemix which has CH12 has no association with the pitch channel, this is what for me is very strange why it's causing the swash servos to move non-linear.

The other freemix I created is to move the pitch channel via a 3 way switch more smoothly at a consistent rate using the ...

Hi Mattes61,

I don't think it's an issue which got introduced on spirit version 4.0.0 as I rolled back to version 3.7.2 and the issue persisted. Im wondering if I can capture the logs of the pitch channel and the 3 swash servo movements in the logs. so that maybe I can see if it's before it gets ...

Hi Mattes61

The mix is as recorded here in the video link

https://youtu.be/GNIQAGwxrkE?feature=shared

I have narrowed down a bit further and found out that this issue isn’t reproducible using sbus protocol. I have reached out to Frsky and created the following for ethos

https://github.com ...

Thank you very much for very interesting finding.

From the FBUS processing point of view, there is no difference between 8 - 16 channels.
For what purpose are you using this channel?

I wanted a channel so that I can assign it to fine tune parameters such as sensor gains as example in flight ...

Hi Mattes61,

The stick deadband was set to 2.

I have updated to Ethos 1.6.3 and the rx to 3.0.1, unfortunately the issue remains.

For now ill just remove/ not use ch12 in my setup, then all is fine and smooth until i find a way to isolate the issue.

Adc filter is deactivated?
In edge tx nane is adc filter in ethos I don't know what it's called
adc filtering was enabled, however tried after disabling and the results are the same.

After spending some time on this, I think I kind of know how to reliably reproduce this on my setup. and it had ...

Agreed, thanks both for the input.

Can someone please help to verify from the videos if both the rudder and Swashplate movements corresponding to the stick movements are the same on the bench? Thanks

Spirit GT ver4.0.0
Frsky fbus


Rudder
https://youtube.com/shorts/D9n_-vnj4mQ?feature=shared

Swashplate
https://youtube.com/shorts ...