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afernan's Groups

afernan's Discussions

Compass mag_field hard interference: solved

Started this discussion. Last reply by Ian forbes Apr 16, 2012. 14 Replies

I had really hard mag_field interferences compass in one of my custom copters (see Tridge analysis done in…Continue

Arducopter 2.1.1. alpha Loiter proposal

Started this discussion. Last reply by afernan Jan 17, 2012. 37 Replies

I´ve been working some weeks in a code for improvement of LOITER since I found not good enough for me (IMHO) the one of AC2.1.1.r8 (and previous up to 2.0.49). I´ve started with the AP-NG that I´ve…Continue


Started this discussion. Last reply by afernan Oct 12, 2011. 5 Replies

I was wayting that Jason open this discussion page "2.0.47"( as usual in previous updates) in order to  joint all experiences on 2.0.47, so we avoid the dispersion we have now.I´d sugest that allways…Continue

Quadropter flight time

Started this discussion. Last reply by Michael Pursifull Sep 21, 2011. 14 Replies

I´ve did a small numerical exercise in order to improve the flight time for an electrical quadropter. I did for a family of 5 quadropter weights from 500g to 1.5Kg, dry mass, (without battery).The…Continue

Tags: battery, duration, quadcopter, quadropter, AC2


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Aeronautical Engineer. Space. EADS-ASTRIUM-Spain
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Afernan's Blog

DroidPlanner & 3DR flight test (APM for Android)

Posted on April 7, 2013 at 12:30pm 23 Comments

I´ve succeeded to use the DroidPlanner (by A. Benemann) software with my Arducopter using a 3DR telemetry link in a real flight tests on the field.

To do that you'll need a couple of things:

- OTG (On The Go) USB cable (3€ in Amazon)

- A "rooted" Android…


ARDUCOPTER SONAR - what´s the best?

Posted on August 7, 2011 at 3:30am 24 Comments


Sorry to insist, but SONAR in 2.0.37 was perfect.


Please have a look to this video. This is using 2.0.37, defaults PIDs and the behaviour, I consider almost perfect.


Same hardware with 2.0.38 is really much worst and oscillating. Maybe it could be re-consider to come back to the 2.0.37 philosophy.


Noise problems are ALL solved isolating and…


Arducopter 2.0.38 Flight test - Wind effect

Posted on August 5, 2011 at 3:30pm 9 Comments

I want to add this discussion to record experiences in flight test from 2.0.38 and on mainly in RTL, LOITER and AUTO. Also to analise the effect of the WIND, that for me is THE big problem. I´ve tested several days my copter in different wind conditions. Below is a summary of my conclussions.


RTL flight tests

We can say that RTL works, but depending on wind conditions and direction of the wind in the moment of…


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