Firßt of all I would like to give my thanks to the developers of this marvelois piece of software. I installed it on a Bixler 2 and used some of the suggested PID on the official webpage and it flies like on rails. Never seen this from a feiyu.I know I still have to go through the full tuning guide, but nevertheless maybe you can help me to identify the relevant parameters for the Looter behavior:Switching on Looter on a mildly windy day is like driving a rollercoaster. I do get circles, but the plane is going in a sharp rollof 45 degree, full throttle as if it wants to crash, than starts to go back to zero roll and very little throttle etc. I get always a heartache in the moments when it goes into the 45 degree and full throttle moments. I would like to see a more moderate behavior like in the feiyu, so that I get 22 degree roll and a more moderate throttle behaviour, so that loiter is much more relexed and does not go to the limits of the system,
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I too have recently started with APM on a Bixler 2 so take my advice with a grain of salt. I was seeing the same behavior and tracked a large part of my problem down to the rudder mixing with ailerons (KFF_RDDRMIX of 0.5). The default Bixler 2 servo position reverses the rudder and if you have reversed this in your TX and not APM it will apply the wrong rudder direction in a turn (as it doesn't know better). In FBWA mode on the ground if you command a left bank, does the rudder deflect to the left or right? If it is reversed it will try and fight the turn and the APM will need to command a lot of bank to achieve a turn which is unstable. If that is the case un-reverse it in your TX and reverse it in APM setup in Mission Planner to correct.
Another thing I found stabilized loiter and general APM performance was ensuring that the control arms connect to the very outer hole on the horns for each surface.
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Hi there,
I too have recently started with APM on a Bixler 2 so take my advice with a grain of salt. I was seeing the same behavior and tracked a large part of my problem down to the rudder mixing with ailerons (KFF_RDDRMIX of 0.5). The default Bixler 2 servo position reverses the rudder and if you have reversed this in your TX and not APM it will apply the wrong rudder direction in a turn (as it doesn't know better). In FBWA mode on the ground if you command a left bank, does the rudder deflect to the left or right? If it is reversed it will try and fight the turn and the APM will need to command a lot of bank to achieve a turn which is unstable. If that is the case un-reverse it in your TX and reverse it in APM setup in Mission Planner to correct.
Another thing I found stabilized loiter and general APM performance was ensuring that the control arms connect to the very outer hole on the horns for each surface.
Hope that might be helpful.
Cheers