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APM quadcopter user, i get strange Compass-Motor Calibration (compassmot) results?

Started by Nick. Last reply by Clifton Hipsher 7 hours ago. 5 Replies

Hello. I did the compass motor calibration various times and checked the results.I have APM 2.6, external compass + gps module UBlox Neo-6M, turnigy plush 12Amp ESC's, and a 2.7Ah battery. The apm is…Continue

Tags: gps

Onboard Image Processing (Find red disk in green field)

Started by Jake Kutrufis. Last reply by Randy 18 hours ago. 14 Replies

I would like to add a computer vision to my quad. My end goal would be to have the quad stop and hover over a certain object (red disk in green field) when it comes in contract with it during a…Continue

Autotune crash

Started by Jack. Last reply by Clifton Hipsher yesterday. 23 Replies

My attempt at autotuning resulted in a crash this morning.I fiew the quadcopter previously with a 2S battery. It was quite stable but underpowered.After upgrading to a 3S battery I set the PIDs to…Continue

Pixhawk and 3DR malfunction

Started by David Pulvermacher yesterday. 0 Replies

I have a clone Pixhawk which I have been using with two 3DR modules, one attached to a bluetooth module, which connects to my Android device.After a year of working perfectly, the 3DR telemetry is…Continue

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Comment by Thomas J Coyle III on October 30, 2015 at 6:42pm


I have sent the blog post OP a pm asking him to either remove the OP post review requirement or lock the discussion thread to further posts if that is his intent.



Comment by Cala on October 30, 2015 at 6:31pm

I'm not shure where is the best place to comment about the forum.

Comment by Cala on October 30, 2015 at 6:29pm

Comment by Thomas J Coyle III on October 30, 2015 at 6:18pm


Please provide a link to the post you are referring to.



Comment by Cala on October 30, 2015 at 5:47pm

Sorry guys, you know if something change in forum rules? This phrase appears for the first time for me when I try to write in a post only a common comment, nothing incorrect, "Your comment must be approved before everyone can see it".

Comment by Larry A Amati on October 18, 2015 at 5:26am

I have been a member of this forum for about a year and a half.I like a lot of You have posted problems about our drones.What I have discovered is that many of our issues are our own creation.I have learned to pay close attention to details like balancing motors,props etc.Triple checking motor direction and correct prop (ccw,cw).Also really understanding things like esc calibration,radio calibration.The best advise I would give is to understand the wiki and before you arm your drone check everything again.We should all thank the developers  for putting up with some of our questions on the support forum.Happy flying!

Comment by James Lummel on October 10, 2015 at 10:33am

If you are having problems with  v3.2.1 on APM 2.x hardware and your multirotor is unstable and won't sit still but worked fine with v3.1.5 or v3.2, try changing the parameter INS_MPU6K_FILTER to 20 or 42 rather than the default of 0. The value of 20 is preferred for an APM 2.x flight controller.

As I understand it, the value of 0 used to default to 20 in earlier firmware but is now an absolute value. Changing this param cured the problem I had with 3.2.1 on a Cheerson CX-20 and it now flies smoothly with the final firmware released for APM 2.x. I'm really liking the PosHold mode!

Comment by Kautilya Vemulapalli on September 30, 2015 at 5:00am

@Darius Jack,

I do find it annoying too since you might not have the last setup you used available on your current test. They might do it if they hear from too many people for them to turn that option off.

Comment by Darius Jack on September 30, 2015 at 4:57am

Can we ask developer of eCalc to disable

random fooling option ?

it will keep changing the options you see at random every time you open eCalc.

Comment by Kautilya Vemulapalli on September 29, 2015 at 9:23pm

@estebanflyer, You need to get the paid account to get access to all options. If not, it will keep changing the options you see at random every time you open eCalc.


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