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 Post subject: Kompass Abweichung
PostPosted: Fri 24. Feb 2023 19:05:10 
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Joined: Fri 02. Dec 2022 12:27:33
Posts: 32
Hallo zusammen,

nachdem ich bei der Kalibrierung zuhause bei beiden Hubschraubern mit einem Geo-Link eine deutliche Abweichung zum externen Kompass hatte, habe ich heute die GPS-Module auf dem Modellflugplatz nochmal neu kalibriert.

Allerdings habe ich immer noch eine Abweichung von 36 bzw. 49 Grad bei den beiden Modulen. Woran könnte das liegen? Und sollte ich den Wert in der Software manuell korrigieren?

LG Tanja


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 Post subject: Re: Kompass Abweichung
PostPosted: Fri 10. Mar 2023 13:48:33 
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Joined: Mon 29. Apr 2013 16:06:44
Posts: 12213
Hello,

the problem could happen if there is something magnetic near the GeoLink or there is a servo within 10cm proximity to GeoLink or canopy mount.

How do you compare the angle? It is very possible that it shows heading correctly. Have you tried some function such as Position Hold?
If it will work well, then there is no problem with angle.

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 Post subject: Re: Kompass Abweichung
PostPosted: Tue 14. Mar 2023 19:33:50 
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Joined: Fri 02. Dec 2022 12:27:33
Posts: 32
Hallo,

das Geolink ist am Heckrohr weiter als 10 cm von anderer Elektronik und der Haube entfernt. Das sollte passen.

Gemessen habe ich die Abweichung mit dem iPhone 14 und zusätzlich einem manuellen Kompass von Suunto. Die Abweichung beim Test zuhause betrug 83 Grad zum Kompass (s. Fotos).

Position Hold funktioniert recht gut, jedoch tendieren beide Hubschrauber etwas zum abdriften.

LG Tanja


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 Post subject: Re: Kompass Abweichung
PostPosted: Tue 11. Apr 2023 8:02:56 
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Joined: Mon 29. Apr 2013 16:06:44
Posts: 12213
Hello,

it seems your Compass calibration is good. There will be not a problem with calibration.

If you are using ESC fan, can you disconnect it for a comparison?

There Stabi Acro parameter could make a difference. Please read this page:
https://manual.spirit-system.com/index. ... tion_drift

When you release sticks in the Position Hold then model should be steady with no drifting in horizontal axis. From your description it is going somewhere else all the time, right?

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