Discussions

External compass issue.

Posted by Juan Carlos Hdez on August 19, 2013 at 3:03pm

Hi all.

I have a fly away problem in loiter, AC 3.0.1, and I've seen that there is a misleading issue with my external compass HMC5883 (3dr robotics). The arrow silkscreened shows an incorrect direction.

I don't know if that corrects my fly away problem, but the true is that I have compass_orient parameter = 0 (not correct).

I will test tomorrow.

Please, advise at wiki.

This is APM 2.5 (see compass IC code and arrow)

This is the external mag (y arrow and IC text):

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Replies

Juan Carlos Hdez August 31, 2013 at 2:38am

have you done compassmot? Also check out your accel vibrations and HDOP param at log

HDOP must be < 2, if not you have a bad GPS fix

Vibrations must be as low as possible. Check out wiki:

http://copter.ardupilot.com/wiki/common-diagnosing-problems-using-l...
Juan Carlos Hdez August 20, 2013 at 3:31pm

Now I have a perfect loiter.
Juan Carlos Hdez August 19, 2013 at 3:15pm

Even earlier APM 2.0 shows that mistake.