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Andrew Girgen
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Hex constantly wants to roll to the right and pitch aft...
Started this discussion. Last reply by Andrew Girgen Feb 25. 12 Replies 0 Likes
Hello. Just wondering if I could get some advice.Since day one, my hex has had a problem with uncommanded roll/pitch. I think (its hard to tell with the control issues) I have gotten my rate pids…Continue
Tags: roll, uncommanded
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Andrew Girgen replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."Don't use the preflight_calibration command. See here. Still doesn't exactly point to the problem I'm having but might be a start. Ill re-calibrate my accelerometer tomorrow and see how it does."
Andrew Girgen replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released"oops, i mean preflight_calibration. Sorry if that confused anyone. If I used this command, I assume it would cause come crazy un commanded roll/pitch problems?"
Andrew Girgen replied to Randy's discussion ArduCopter 2.9 / 2.9.1 released"Hello,
Just a quick question. What does the "preflight_level" command under the actions tab in the flight data page of mission planner do with the 2.9.1 release? does it only re calibrate the gyros? I was under the…"
Andrew Girgen replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."I will repost the question in that thread.."
Mike Boland replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."That's a good question and would be worth asking in the '2.9 release' thread or the MP thread.
The original Level command was removed and replaced by the calibrate command because doing a level would screw up the accelerometer…"
Andrew Girgen replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."Ok, that was what I was thinking regarding the accelerometer calibration.
It's actually "Pre Flight Calibration". I thought the word "sensor" was in the name, I wasn't by my computer when I wrote that reply.…"
Mike Boland replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."You have lost me with the 'Pre Flight Sensor Calibration' ??
Where is this function?
The Accelerometer calibration has to be done and that is all the levelling it needs.
And yes, it needs to be done on all sides but not redone all the…"
Andrew Girgen replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."I have never used the Level command in the configurations tab other than when I initially calibrated my accelerometer. All other times I have had to level the copter I either used the "Pre flight sensor calibration" or just…"
Mike Boland replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."Just a question on your procedure for level.
Are you using the CLI level or the Level command in the configurations tab?
Apparently the CLI level does not do good things with 2.9 and the Accelerometer calibration should be used in the Level…"
Andrew Girgen replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."Just an update... I calibrated the ESCs individually and it helped a little. I was able to completely remove the backwards drift however the uncommanded roll is still present. No amount of trim corrects this. While…"
Andrew Girgen replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."Hey Jeff, thanks for the reply. My motors only go on one way so I doubt this is the issue. I wish it was this simple!"
Jeff Pinkston replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."Does it always roll/pitch in the same direction regardless of wind or heading? I was having the same issue and realized that one of the motor screws was in the wrong hole about 2 cm off. If this is the issue, you will be able to see a…"
Andrew Girgen replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."Sean,
Thanks for the reply. I will try the manual ESC calibration as I used the auto cal method. I was lazy.
I guess it's unclear to me as to how or when arducopter calibrates its sensors. From my understanding, the…"
Sean Tierney replied to Andrew Girgen's discussion Hex constantly wants to roll to the right and pitch aft..."Hey Andrew,
I used to have very similar issues with my first quad. Here is what I did to address it:
- I run the manual esc configuration per the wiki as I feel I get better results
- when attaching the battery to your Copter, be sure that it is…"
Andrew Girgen posted a discussionHex constantly wants to roll to the right and pitch aft...
Hello. Just wondering if I could get some advice.Since day one, my hex has had a problem with uncommanded roll/pitch. I think (its hard to tell with the control issues) I have gotten my rate pids pretty much dialed in. When I find the sweet spot (slightly forward and to the left on the stick) it hovers nicely. The moment I let the stick center the thing rockets off to the right (~10 degrees) and begins a slight drift backwards. I was able to trim out the aft movement, however, even with…See More
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