ArduCopter User Group

Discussion group for ArduCopter users

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Custom Autopilot development - Theory through Implementation

Started by Wil Selby. Last reply by Wil Selby 4 hours ago. 3 Replies

I started this project wanting to learn more about the ArduCopter software that was powering my APM board and 3DR Quad-C frame. I found …Continue

Tags: equations of motion, MATLAB, autopilot, Control System, ArduCopter

GPS err in altitude vs. flying a drone at low altitute 3 mts

Started by Darius Jack on Monday. 0 Replies

Hi,I would like to study GPS err in altitude,since Cala suggested problems flying a drone at 3 mts altitude in agriculture.Laser Developer offers Lidar technology solution.Let me know your  opinion…Continue

Motor spin slow than others

Started by Cristian Rougier. Last reply by Khoa Vu on Monday. 19 Replies

Hello, all , im working with APM 2.5, in X configuration, when i arm the APM, one motor (motor 4) spin slow than others 3.When i calibrate the ESC's in automatic mode, all spin with same speed and…Continue

Noob APM/PixHawk RC transmitter coming soon to HobbyKing

Started by Tony Kenward. Last reply by Khoa Vu on Monday. 3 Replies

I am not interested in purchasing one of these, but I thought y'all may be interested. [Chinglish description text spell-corrected and posted below]--------------------------------------The Quanum i8…Continue

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Comment by Thomas Stanley-Jones on April 14, 2015 at 6:26am

Has anyone made a pdf or some other printable version of the Arducopter/Arduplane manuals?  I would like to print a manual for reference, or at the very least have an offline copy of it.  All my flights our out of cell coverage.  And when my laptop is running Mission Planner, I don't want to be switching back and forth between it and a browser.

Comment by Gian Pietro Fedrigoni on April 10, 2015 at 4:08am

Screenshot%202015-04-10%2012.49.42.pngHello everybody,

few days ago I've downloaded the "Mission Planner" update. After that, when I plan a new mission and set up new waypoint with the "green" selction button (please see the screenshot eclosed), the waypoint is automatically positioned in a so far location distance. Anybody knows the reason why? Many Thanks

Comment by Tom Gates on April 7, 2015 at 10:57am

I have a 2013 3drobotics quad I would like to mount a gimbal, does anyone have a simple mount process. I would like to use a canon 260 for video

Tom Gates

Comment by Richard Kennedy on March 12, 2015 at 2:22pm

@ Doug

I have not tried sonar / LIDAR yet.  That all seems to be a grey area ... I have a feeling the devs are deep in some secluded room working on  these details as we speak. I am really interested how that optical flow works. I will be trying to land on a boat. If it's drifting around a bit can it see the boat move and stay with it? Seems like it should. Can't wait until these things are worked into the code.

Comment by Doug Walmsley on March 12, 2015 at 7:15am

@Richard, @Kennedy,

I curious if Sonar/LIDAR corrects altitude in Auto?  Has anyone tested to see if these sensors correct as you are flying over various terrains?

Comment by Richard Kennedy on March 3, 2015 at 6:14am


I think the devs are working on the ability to use known topography data for just such an instance but as of right now I think you have to do in manually like you are doing. Or you could use a sonar device like these. I'm not sure how well it works I never tried it myself.

Comment by Darrell Burkey on March 2, 2015 at 11:03pm

I'd like to do a fairly standard lawnmower pattern over an area of trees to do some mapping. There is quite a slope from one end to the other. I thought that I'd add extra way points and then adjust then increase the altitude as it goes up the hill so I have a fixed height over the trees. I just wanted to check that there isn't an easier way then this before I gave it a try. Any ideas on keeping the height relative to the sloping landscape rather than just a fixed value of the barometer? TIA

Comment by Talha A. on February 13, 2015 at 8:49am

I have an issue with my Arducopter in Auto mode. Can anyone help?

I raised the question here:

Comment by DG on January 26, 2015 at 9:20pm

I have NEO-M8N from CSGshop. Plug-n-play after verifying settings. I normally get 17-23 satellites and 1-1.2 hdop within 15-30 seconds, depending on cloud conditions, K-Index doesn't seem to affect it nearly as much.  With the 6, some days I couldn't fly because hdop wouldn't drop below 2.5 or <10 satellites, or even glitch after takeoff....yikes.

No negative issues yet, only orders of magnitude more confidence I will fly when powering up.

Comment by Richard Kennedy on January 23, 2015 at 11:44am

Vote of confidence for NEO-M8N??? If you are using one can you say it's been solid / trouble free? Better than the 7? I lost a quad last summer. Fly way. Never found it so I'll never know but I had a M8N on it at the time. I'd like to put one on my new quad I do like how fast it gets 10 sats or more!  But I sure would like to here people say they haven't had any issues them first. Thx


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