This is a discussion re the ArduCopter-3.1 AutoTune feature. A place for people to report successes and failures, ask questions and get answers.
The AutoTune wiki page is here.
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Hi Brian,
Your GPS is upside down but other than that it looks ok.
How have you calculated your CG. The reason I ask is I can see a little coupling between roll and pitch.
I also just realised that your GPS also has the compass in it so that will probably be messing with a few things too. So when you flip the GPS make sure it is correctly orientated for the compass and recalibrate the compass.
I'm not an expert but your logs show a gps problem Hdoop too high, but Altitude hold not use gps, your vibs looks near limit too, I'm working on triyng solve that problem here http://diydrones.com/forum/topics/vibration-isolation-and-dampening... sometimes vibs gives a poor althold performance but I'm not shure if it is your problem.
Hello everyone. This is my first post. I've built an hexacopter with a 960mm frame, DYS 40A SimonK ESCs, Foxtech KV288 motors and Pixhawk for FC. I would like to try autotune.
The wiki pages are amazing, so far I've managed to do everything without having to ask a single question here. But while I was reading the wiki for the autotune feature I read that warning about low kv motors and simonk escs... Exactly as what I have.
My question is, is it safe to try it? Is there anything I can do to minimize any risks?
Unfortunately in the wiki there are no answers for that, and I couldn't find much after googling all afternoon today.
Maybe you can help? I would really appreciate it.
Thanks in advance!
Cheers
Lucas
Hi Leonardo Bassin,
It looks like you have to recalibrate your radio. You are constantly asking for a 2 degree pitch. You have not changed your dead bands on the apm so it isn't the jitter you were concerned about.
So recalibrate your radio in mission planner and you should be fine.
Sorry for the slow reply!!
Hi Developers and my fellow users,
I would like to share with you my great joy and amazement with the success of an autotune I performed on my SteadiDrone QU4D X. The platform uses 100kv motors and had an all up weight of over 9kg. I was very hesitant to do it because of the cost of the propellers and motors as well as the warnings on the AutoTune page about low kv motors but after having talked with Brandon Basso from 3DR, decided to give it a go. This platform is now incredibly stable and responsive. After the Autotune, I flew two ~40min automatic mapping missions in 5-6m/s winds which went flawlessly. If the log file from the autotune and subsequent flights would be helpful to either developers or other users, please do not hesitate to let me know and I will make them available.Here is the video of the AutoTune:
I will look at your logs a little later today to confirm.
Hi Brad,
I just completed an auto-tune with my quadcopter which uses 100KV motors, 28Inch Props and had an all up weight of over 8kg. Hover thrust was approximately 65%. The Autotune was done in calm wind conditions and was a complete success. I am absolutely amazed at the difference. Based on my experience, weight was not an issue but that may be because of the individual components in my unit.
Regards,
Oliver
I have two 5000 mah 3c batteries, my pitch and roll values are different perhaps batt weigh distribution I have horrible weather conditinons too, but when I can, I try again Thank's Brad
Thank's for post your experience, I'm beguin with this great piece of the code now, I learn a lot of things from my cuads doing autotune but they can give me more, I'm going to try with one battery
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