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Permalink Reply by Rick Stewart on April 24, 2012 at 3:01pm

I am thinking of reverting to this version, 2.5.4 is giving me a headache.

Rick

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3D RoboticsPermalink Reply by Chris Anderson on April 24, 2012 at 3:23pm

Rick, what's the issue with 2.5.4? We're getting a clean bill of health from the testers. 

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Permalink Reply by Rick Stewart on April 24, 2012 at 4:52pm

So I got my APM 2.0 with 2.5.3 on it.  I installed it, set it up with no issues, went out to fly, it was level,

I had some minor stabilize issues which I corrected by reducing one of the PIDs by the suggested 25%.  Fast forward to 2.5.4.  After update and reconfiguration, I took the quad out to fly.  It does the following which 2.5.3 never did; In stabilize, its unstable, yaws to the left, wobbles allot, and has a tilt. To keep it stable I have to apply elevator and aileron if I don't it drifts off in the direction of the tilt (to the right), and yaws left..  I had my controller set up in a elevron configuration switched it to a normal wing type with no change.  I had trims 0'd.  I am currently trying to find a doc on the net that explained the CLUI version of how to reset, erase, and reload the whole thing to 2.5.4.  Then I will re calibrate it and start again.  Any assistance would be appreciated.

Rick

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Permalink Reply by Vishal on April 25, 2012 at 6:34am

Rick, I'm not familiar with 2.5.4 yet.  I'm usually a version or few behind.  Anyway, you probably already know this but you might try connecting to the board and via the terminal, try doing a erase and reset.  Then you can do the radio setup and mag calibration. 

Here is a link to some CLI mode information- http://code.google.com/p/arducopter/wiki/AC2_CLI

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Permalink Reply by Lars Carlen on April 25, 2012 at 12:54pm

I have a hexacopter with 2.5.4. After arming I move the throttle stick slowly from full down to neutral position. Every 2nd motor start spinning. Pitch for forward -> back motors start spinning. Pitch backward -> back motors stop and front motors start spinning. Increading throttle (passing neutral position) -> more motors start spinning.

I uploaded 2.5.4 with APM Planner. How to go back to 2.5.3?

Lars

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Permalink Reply by Vishal on April 26, 2012 at 10:10am

Lars, I wonder if calibrating the esc's again may help.  Give the method on this page a try and see if that helps- http://code.google.com/p/arducopter/wiki/AC2_ESC

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Permalink Reply by Lars Carlen on April 26, 2012 at 2:47pm

Vishal, thank you for answering my cry for help!

I have  6 x jDrones 30 Amp ESCs 

and so far followed Automatic ESC calibration (all at once).

Manual ESC calibration (individual) seems a little more troublesome. Direct connection between receiver and ESC? I have tried but did not get any motor spin at all.

Receiver: Graupner HOTT GR-24.

I am a pedestrian on this highway for admired experts, so please excuse my ignorance.

Lars

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Permalink Reply by Vishal on April 26, 2012 at 7:52pm

Well, I'm no expert but I'll try to help. Which version of APM are you using? 

If it's the new board, then I wonder if you might be having this issue-http://diydrones.com/forum/topics/esc-arming-issue-turnigy-plush-40...

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Permalink Reply by Rick Stewart on April 26, 2012 at 10:04am

So I went in and reset it, although I didn't follow the manual, I guess when I get on a command line I have no fear.  Anyways, I have cleared up most of the issues, I still have some drift issues but nothing what it was like before, I am closer to how I flew in 2.5.3.  I am going to tune it up a bit and see if I can improve performance.  It's been frustrating mainly due to the weather keeping me grounded.  Thanks for the help,

Rick

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Permalink Reply by Vishal on April 26, 2012 at 10:07am

Glad to hear it's working. I'll have to give 2.5.4 a try soon also.

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3D RoboticsPermalink Reply by Chris Anderson on April 27, 2012 at 9:22pm

Any tips for the rest of the users on how to set up 2.5.4 best? In my own experience it helps to calibrate the compass on the benchtop before flight ("Live Calibration"), since that now has higher weighting. 

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Permalink Reply by Chris Huitema on April 27, 2012 at 10:59pm

Mine flies well with everything stock, didnt change a thing. Does get wobbly when decending but quite controllable. Throttle response seems to have changed a bit for me, tend to have to move the stick alot more which is a definate plus!

Not sure about the compass calibration, looks to be spot on? hard to see both lines because they are right on top of one another... just how its been from the start.

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