2.0.8

Just downloaded 2.0.8 from the planner.  The winds here in the UK are making a real nuisance of themselves at the moment but despite the weather I was able to do a brief test and it flew okay in Stable mode.  However, I see that the yaw 'unwinding'* issue is still there.  Several people have mentioned this and yet it has remained a small but noticeable problem for some time.  Would it help if I made a short video of the problem so that the project team can see what is happening or is it a known and difficult issue to resolve?

Nigel

 

* The yaw unwinding issue as far as I'm concerned is where you provide a yaw command, the copter then rotates but when you release the rudder stick the copter rotates back in the direction it had come from around 10 or 20 degrees.

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DeveloperPermalink Reply by jasonshort on May 23, 2011 at 6:31pm

I'm going to implement an alternative (not as fancy) yaw control tonight. I'll put a compiler option in the APM_Config.h and you can try alternate ways. That'll help me sort this thing out for good. 

I also added better Yaw logging today to help as well. If you have log issues, please erase your logs. That seems to help.

Jason

Permalink Reply by Vincent Mees on May 23, 2011 at 11:08pm

The problem I'm having with yaw is when I do for example a fast move to the right and level again, it starts to yaw left for about a 100° without stick input. If this happens a little far you loose orientation immediatly. If it flies stationary it doesn't do it. Strange. This happens with mag on and off.

Went back to the pirate code and everything flies just fine

Permalink Reply by Flávio Henrique P. de Oliveira on May 26, 2011 at 7:04am
I'm trying to fly with 2.08 but I aways have the same problem: motors wont rise together when I increase throttle. When I upload the code from planner (0.4.35) it works fine, but when I download from arducopter download section "Arducopter 2.0.8.zip", compile and upload, it doesn't work properly.
The reason I need to use from source is that I'm using RFBee and not XBee for telemetry because RFBee doesnt have 57kbps, only 38kbps.
I'm used to the setup process and everything is very well configured, I'm sure there is something in the code or in default PID that makes it happen. When I download from planner it works fine, but I don't have telemetry...
Here is a picture of my sensors just after power on and arm motors:
Attachments:

DeveloperPermalink Reply by jasonshort on May 26, 2011 at 9:09am

Please update to 2.0.13 in the downloads section. Most of the Yaw problems are fixed.

Thanks!

Jason

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