Replies to This Discussion

DeveloperPermalink Reply by Olivier ADLER on October 22, 2011 at 3:42am

 

I think this is because the PWM frequency has been rised to 400 Hz and your ESCs don't like it.

 

You should be able to get the older mode adding this inside APM_Config.h and recompiling.

 

# define INSTANT_PWM    ENABLED

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Permalink Reply by Fokko Driesprong on October 22, 2011 at 5:17am

That worked! Thank you very much. I use the TURNIGY TRUST 45A SBEC Brushless Speed Controller, but it seems to fail with the new PWM setting.

 

I am going to test the .49, thank you all! :)

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Permalink Reply by druckgott on October 22, 2011 at 8:04am

Today I make a flight with .49 and tuned the baro.

Now my copter flight very stable in Loiter.

Here are the logs:

The only things I have changed are the Loiter P to: 0.3 and the Throttle P to:0.36

 

On the pictures it´s only loiter modes. I have deselect the stabalized modes.

 

And here a picture for the hight:

I will now go on with automode

Attachments:

• 2011-10-22 04-48 3.kmz, 40 KB
• 2011-10-22 04-48 3.log, 370 KB

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Permalink Reply by druckgott on October 22, 2011 at 8:05am

Second Log:

Attachments:

• 2011-10-22 04-49 4.kmz, 49 KB
• 2011-10-22 04-49 4.log, 407 KB

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Permalink Reply by Jan Vervoorst on October 22, 2011 at 9:56am

Just a question to all of you: I was using 2.0.46 before and then switched to 2.0.49, nothing else changed. In 46 I was able to see logs in the MissionPlanner log window, but with 49 it never shows any logs available. If I do 'dump 0', it will print a bunch of data that I can copy over to a textfile and display, but never does it show actual log files to download in the menu.

I'm not even sure it has to do with the swap to 49, I'm just trying to figure out what to do about it. Thanks!

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3D RoboticsPermalink Reply by Chris Anderson on October 22, 2011 at 10:41am

Erase the logs and then try again. If need be, dump 0 should always work as you note. Just save the text as a .log file and you can analyze it with the MP as usual. 

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Permalink Reply by basshead on October 22, 2011 at 10:17am

Hey guys, everything is working great, loiter including except my Y6 is yawing very slowly still. Having set a yaw trim only helps slow the eventual yaw down unlike what I thought it was doing earlier. Any idea on how to fix this? My motors are perfectly straight, I wasnt getting yaw on .46 but loiter+althold wasnt working as good as it is now.

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DeveloperPermalink Reply by Olivier ADLER on October 22, 2011 at 12:00pm

 

Could you check your radio ch4 input inside Mission planner raw sensor, radio window. And check if the value is right and consistent when you stick is in the center position. You should have the same value that you got during radio calibration for the central position.

 

 

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Permalink Reply by basshead on October 22, 2011 at 12:37pm

Well I have redone my radio settings like 10 times with no luck so I am going to rule this one out.

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DeveloperPermalink Reply by Olivier ADLER on October 22, 2011 at 4:16pm

 

Redo radio settings is not usefull. You should check that CH4 center position is consistent in the Mission planner raw sensor, radio window.

If it is not stable, then redoing the radio setting will not help.

 

Please report if you have consistent Ch4 center position. You should'nt see more than a couple microsecondes of jitter.

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Permalink Reply by Kirill on October 22, 2011 at 12:19pm

Tested 2.049 indoor today, made some PID tweaks, now copter is very stable, no oscillations at all. It must be the best firmware of all.

Here is a short video:

 

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Permalink Reply by Heino R. Pull on October 22, 2011 at 3:39pm

FInally got good enough weather to test 2.0.49 on my standard frame. Loiter is working really well after I tuned my Nav_loiter_P to 0.279. Oscillation is gone and it hovered very nicely in a 3 meter circle. It was the first time I felt safe doing a loiter in close quarters. I flew 6 packs checking things out and I did a 6 minute loiter at 15 meters in a small wind with excellent results. Baro hold is up or down 4 or 5 meters, but loiter was very good and I was more relaxed on the sticks then ever.  Awesome. 

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