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Compass Problem

I have a standard, pre-soldered Arducopter with sonar mounted as per instructions.

Magnetic declination set correctly.

Using Mission Planner in flight mode, both indoors with GPS lock and outdoors again with GPS lock, the compass shows North and East c

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Developer

Loiter PIDs

I built a quick sim today to look for the optimum PIDs for Loiter:

 

What's looking good is 

 

Loiter_P = .5 or .6  (more = some overshoot, but not much)
Loiter_I  = zero       (Just say no)
Nav_P    = 4   (Higher than I thought, What will it do to navigat

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GPS position hold in quadcopter..

Hello, 

Im trying to write my own code in order to do gps position hold to my quadcopter and later waypoint navigation. Im using the MediaTek MT3329 gps set to output NMEA and im decoding it with the tinygps library but i have some issues that i hope

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Inconsistant Start-up

My APM will not boot (AB and C lights flashing) unless I physically rotate my board. If I do this for a few seconds, it normally boots.   It occurs whether it is powered by Lipo or USB. I soldered my own board. I can't figure out if I have a groundin

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Sonar Noise Reduction update

 I have read the arducopter manual and also reviewed some of the earlier forum posts and initially moved my sonar sensor (recommended Maxbotix) 3" away from the main electronics but still see too much noise for the sonar to work in Alt Hold properly,

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Arducopter Tricopter yaw issue

Hi everyone,  This is my first post...

 

I have my Arducopter configured as a tricopter and I have loaded the latest AC2.0.40 Beta firmware using the APM Planner and am using the default PIDS. 

When the flight mode is set to stable, I notice (both on th

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PID settings

I have my copter working OK in Loiter now but once it starts to get out of position it starts in ever increasing circles.

 

I have looked at all the info on tuning but it is confusing and sometimes contraditory. Do I adjust loiter or Nav PID's???

 

Can a

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Loiter mode description

Hi

 

I would appreciate some clarification on what Loiter mode is please.

 

On the wiki page the Loiter mode is described as follows:

 

"Loiter mode is attempts to maintain the current location. Like Alt_hold, the altitude is interactive, using the throttl

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T3

GPS does nothing

Hello,

 

I am having a problem with the GPS that I am guessing is a simple noob mistake. When I switch from stabilize to loiter or RTL the quad does not respond, it flies like it is still in stabilize. The blue light on the GPS is solid, and the red li

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Altitude Hold wrong??

Hi,

I have an arducopter 2 and it fly stable but when I activate the "Altitude Hold" mode (i mount the altitude sensor hardware) then it goes (spin) up and yaw counter clock wise... I must deactivate it because i test it in house and i fear that it wi

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