I know this report is a bit late but I just flew my custom hexa (apm2) and tried alt hold and loiter for the first time on this copter. I was surprised and impressed that alt hold works perfectly. Loiter works within about a 12 foot radius. Keep in mind that this is with stock PID values and without any tuning whatsoever. I'm looking forward to getting the PID's tuned to see what it can really do! Very impressed with 2.5.3!
I am thinking of reverting to this version, 2.5.4 is giving me a headache.
Rick, what's the issue with 2.5.4? We're getting a clean bill of health from the testers.
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, 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
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, 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
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.
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...
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,
Glad to hear it's working. I'll have to give 2.5.4 a try soon also.
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.
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.