Replies to This Discussion

DeveloperPermalink Reply by Olivier ADLER on December 7, 2012 at 3:06pm

Until we have the right hadware to know exactly what's going on here, we will eventually send you a debug ArduPPM version so that we can check if the problem do come from the ppm encoder, or from the decoding side in the AVR 2560 chip.

The APM log is not usefull here to give us the exact problem location.

We discussed a lot about this problem in the dev team but unfortunately without deeper testing we are just guessing the root cause.

I'll come back with hopefully better news.

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Permalink Reply by Steven Tisseyre on December 7, 2012 at 3:15pm

Thanks Olivier, did you see the post about Uwe downgrading his PPM and that got rid of the twitches.

I can't find that version so have been unable to test (presuming its compatible with the latest ArduCode)

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DeveloperPermalink Reply by Olivier ADLER on December 7, 2012 at 3:59pm

No i just saw it. Thanks this is very interesting information.

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Permalink Reply by Uwe Blumenhofer on December 8, 2012 at 1:29am

Hi guys,
Here is an except from the LOG throttlein(red) and throttleout (green) (ppm Encoder 2.2.68). With the latest PPM encoder version (2.3.12) I can barely detect spikes.

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Permalink Reply by Uwe Blumenhofer on December 8, 2012 at 1:37am

All Version of PPM Encoder in the zip

Attachments:

• arduppmversions.zip, 38 KB

DeveloperPermalink Reply by Marco Robustini on December 8, 2012 at 2:15am

Thanks Uwe, but this kind of problem has been reported by me to the dev list for months, well before the release of the older version inside your zip (2.2.64).

Permalink Reply by Steven Tisseyre on December 8, 2012 at 10:25am

Thanks Uwe, I'm currently testing version 2.3.13 and initial results look very good.

 

Its excellent if you have seen no spikes on 2.3.12 also.

 

Here is a 10 minute bench test flight, nice smooth traces on all channels (just PITCH IN shown below).

 

Still need to do 10hrs worth of test flight, but looks good so far :-)

Permalink Reply by Uwe Blumenhofer on December 8, 2012 at 3:46pm

where can i find the Version 2.3.13 of ArduPPM Encoder

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DeveloperPermalink Reply by Marco Robustini on December 8, 2012 at 4:38pm

Is only for the tester at the moment, a debug version...

DeveloperPermalink Reply by Olivier ADLER on December 9, 2012 at 4:20am

Please PM me so that i can send it to you.

Olivier

Permalink Reply by weelian soh on December 9, 2012 at 10:39am

I have similar issues as well where I almost crashed my Hexa after updating to 2.81, so far unplugging and plugging the battery to re-initiate my APM2 seem to make the problem go away for me, I also took time to cable tie down my loose wiring. My spikes behavior looks exactly the same from the videos you posted. I'll be keeping a close eye on this thread. 

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Permalink Reply by avionics on December 11, 2012 at 9:45am

I am experiencing similar problem. HAL hobby king quad copter.

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