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geolink compass correction?

Posted: Fri 03. May 2019 12:33:08
by mb-1953
In the geolink menu, there is an option to add/subtract degrees to the geolink compass when the model does not reliably return to home. How does one know to add or subtract value? I had a situation where although I calibrated the compass about a month ago, at the field yesterday, before takeoff I noticed the calibration was off. It read 79 degrees instead of 90. I recalibrated but got the same reading. I tried to "add" degrees through the software option but after adding 40 it didn't change the 79 degree value. I could use help in understanding what the feature does. Am I doing something wrong?

Re: geolink compass correction?

Posted: Sat 04. May 2019 19:07:48
by xokia
How close is the geolink and nearest servo? Have a picture?

Re: geolink compass correction?

Posted: Sun 05. May 2019 15:20:36
by mb-1953
approx 160cm

Re: geolink compass correction?

Posted: Tue 07. May 2019 11:13:10
by mb-1953
Tomas can you please advise on this?

Re: geolink compass correction?

Posted: Tue 07. May 2019 19:08:55
by catdog79
Look at the yaw servo in the boom, its much closer than the the TS Servo.

Re: geolink compass correction?

Posted: Wed 08. May 2019 14:53:15
by urgno
catdog79 wrote:Look at the yaw servo in the boom, its much closer than the the TS Servo.
not inside the boom
the 380 has the servo inside the frame
Image

Re: geolink compass correction?

Posted: Wed 08. May 2019 17:12:19
by passe partout
It must be put into perspective, on my 450 Géolink is close to the AC servo and works very well.

Good flights.

Re: geolink compass correction?

Posted: Thu 09. May 2019 7:05:36
by ZeXx86
Mounting is looking good from the photos.

Compass Correction should be zero from default. But if your helicopter is unable to hold properly at the spot and is circling, then it is advised to change the value gradually in steps. This is described in the parameter tooltip menu when you will hover mouse above.
But exact value can't be determined from the ground. Usually it shouldn't be needed.

Re: geolink compass correction?

Posted: Fri 10. May 2019 19:35:13
by catdog79
urgno wrote:
catdog79 wrote:Look at the yaw servo in the boom, its much closer than the the TS Servo.
not inside the boom
the 380 has the servo inside the frame
Image
I know, but the Servo end directly at the boom and its closer to the Geolink than the TS Servo.