ArduCopter User Group

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Custom Autopilot development - Theory through Implementation

Started by Wil Selby. Last reply by Stone1295 on Tuesday. 2 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 John McGrath on October 10, 2013 at 8:06am

@shyam Yup so i installed 1.2 something let it upgrade and it started but then on closing the program and restarting it failed again.. I am going to have to dig up 1.2.80 somewhere and just hold on the updates till someone fixes this problem.

Comment by Shyam Balasubramanian on October 10, 2013 at 7:07am

Yes, Mission PLanner is crashing after version update to 1.2.80. 

It says send error report, I sent it. But not sure, if developers would have seen it.

Comment by John McGrath on October 10, 2013 at 6:28am

@sherlockth I did reinstall same thing.. But I will remove it clean the registry in then install it.. I really hate glitchy software but this is the first issue I have ever had with mission planner.

Comment by Sherlockth on October 10, 2013 at 6:02am

Mine also, I had to reinstall.

Comment by John McGrath on October 10, 2013 at 6:00am

Suddenly mission planner is crashing on startup with my win 7 laptop after latest update.  Anyone else?

Comment by on October 4, 2013 at 1:41am

Since APM 2.6 is sold without a compass, I would appreciate a list of what you can and what you cannot do with or without a compass.

Like without a compass, I have been flying on stabilized  and althold modes very comfortably.

But can I do loiter, can I do waypoints, can I fly in simple or super simple mode without a compass ? 


Comment by Damo on September 26, 2013 at 2:33am

@ Bob Kirkpatrick

Parallel batteries Test

Comment by Bob Kirkpatrick on September 26, 2013 at 2:12am

I'm looking at batteries for my Std RTF X8. It comes with a 3500mAh 3S 30 and I'm wondering if I can use a 6000mAh 3S 25-50C to stretch flight time. eCalc seems to think it's in spec, but I'm wondering if the group here has any input. 

Comment by PASCAL on September 24, 2013 at 12:12pm

hello ,

my 2.6kg quad use 4 rctimer 4215 + 12x5.5 + 40A esc + 6s

0.53m x 0.61m  rate_p 0.11 & rate_p 0.15

the first fligh was qood without Wind  i think i have to adjust other rate_

 how can i make it more stable with Wind ?  is tuning pids only needed ?

you can see video.

Comment by mark on September 23, 2013 at 8:57am

DIY Drones Monthly


Season Two of the Trust Time Trial (T3) Contest 
A list of all T3 contests is here. The current round, the Pylon Race, is here

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