Ok update guys.  The last two releases....  whats up?!?!?

Ive now updated firmware twice and both times I regret it.

From the factory my APM was rock solid!  Rock Solid....  not Obama rock solid.

Today was my second firmware update and its as satisfactory as the first.  The first upgrade caused wandering and subsequent crashes with version 3.1.2.

Saw 3.1.3 was available... so I update in hopes the issues were fixed with 3.1.2

Now if something has a problem you make a fix... or "update". Right?

I mean the end objective is for the thing being updated to work better than the previous right?

Today was my first toilet bowl experience. A little un-nerving since the crashes with the last update.

Yes yes calibrate calibrate....  but lately all I do is calibrate instead of flying confidently.

If people have to be wary that its a coin-toss whether the updates actually improves or degrades the APM performance. They will all be flying NAZA instead of 3DR.

One more bad update and I will no longer be an advocate for the APM and the community.

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Have you looked at your logs to determine what the issue is? It sounds like it may be a compass problem: http://copter.ardupilot.com/wiki/common-diagnosing-problems-using-l... .

Do you have dataflash or telemetry logs that you can attach?

Quite a rant.
It's very easy to see you have no clue.
The firmware does not cause crashes, bad building or ignorance do.
Try a more humble approach, and get help to analyze logs first.

Did you do the compassmot test?

Toilet-bowling is a classic sign of compass issues.

What version were you on before 3.1.2? Was it 2.9.1 by any chance?

Toilet bowling is completely your fault.

You have placed your compass to close to other sources of EMI, like motors, battery, escs, transmitters or wiring between those bits of equipment. Its very easy to test if you have a working compass. Do the compassmot thing, or if you want to see if its right, simply hookup your apm to a computer. Verify that the compass is pointing in the right direction. If its not solwly move it away from the EMI sources (eg just lift it up) and you will eventually get the correct direction. You can remove your props and throttle up and repeat your tests. 

These sensors are cheap when compared to NASA grade sensors, so you will have to make adjustments to your equipments layout. Even in the past planes banned all sorts of electronic equipment during take off and landing for exactly the same reason. Im not here to comment if they were exaggerating the effect on the planes sensors but its obvious sometime somewhere some EMI did make some sensor function incorrectly.

You cant blame the software. Its insane to think each update was released and never tested for such an obvious flaw. That cant happen. THere are other factors, maybe your taking off without GPS and so on.

Its that simple.

I still say compassmot should be a "mandatory" item, along with Acc calibration, compass calibration etc. That and a dedicated program to run it (to ensure consistent results).

To bad my compass is soldered to my APM board at the factory.

Still my fault?

My APM sits in a drawer now, because I am experiencing the same sentiment as the OP.

Tough job for the developers, to make it both sophisticated and easy,  which pull in opposite directions.

Personally, I would like a to see an APM Lite version. Perhaps use the APM 2.81 firmware as a install-able option and rename it APM Lite. It suffered from none of these issues and as far as I can remember it was bug free. Sure loiter drifted with the GPS lock, but no biggie, it was good enough.

Yes, I did a knee jerk rant. Just been having too much trouble lately and my confidence is shaken.

I'm still an APM fan Im just frustrated.

And I apologize to the peeps that do work very hard to improve a great system and community.


Recalibrated everything again and now flying decent.  I need to do some tuning before the thing is 100%



Was on 3.1.2 when it started having issues with loiter.

Not considering the Pixhawk I still think the APM2.5 or 2.6 are great for the $$$.

Just my 2¢: http://diydrones.com/forum/topics/y6-crashed-in-stab

Something is definetely wrong with recent updates.

If I had no clue I wouldn't be on DIY drones upset about my once perfectly running Octo.

If I had no clue I'd be trying to piece things together on Range Video or Eagletree sites to try getting the same functionality.


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