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KLN90B ON A SEPARATED SCREEN OR PC RUNNING FLIGHT GEAR

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KLN90B ON A SEPARATED SCREEN OR PC RUNNING FLIGHT GEAR

Postby carlosrenatopc » Fri Jan 15, 2021 2:03 pm

Hi,

I am using the standard Cessna 172 and I would like to have a KLN90B running on a second screen or on a separate PC.

I have some questions:

1) I did not find the KLN90B, where can I download it.
2) Which aircrafts comes with the KLN90B

Thanks in advance,

Carlos
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Re: KLN90B ON A SEPARATED SCREEN OR PC RUNNING FLIGHT GEAR

Postby wkitty42 » Fri Jan 15, 2021 5:09 pm

i do not see a KLN90B at all... i see only

Aircraft/Instruments/kln89.xml
Aircraft/Instruments-3d/kln94/kln94.xml

the 89 is a GPS device... the 94 seems to be related to boeing cdu...

you might need to create the device if you must have it... you could look at one of these two for example to create it from... maybe...

there is also the FG1000 that might be of interest...
"You get more air close to the ground," said Angalo. "I read that in a book. You get lots of air low down, and not much when you go up."
"Why not?" said Gurder.
"Dunno. It's frightened of heights, I guess."
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Re: KLN90B ON A SEPARATED SCREEN OR PC RUNNING FLIGHT GEAR

Postby Hooray » Sun Jan 17, 2021 12:18 pm

If you have a spare machine, and if there is already a corresponding XML/hard-coded instrument available, your best bet is probably "slaving" multiple FlightGear instances together:

http://wiki.flightgear.org/Slaving_for_Dummies
http://wiki.flightgear.org/Property_Tre ... ol_Slaving

If there is a Canvas based implementation instrument available, you can also stream that over http: http://wiki.flightgear.org/Read_canvas_image_by_HTTP
Image

In that case, another option is: http://wiki.flightgear.org/FGQCanvas

Also see James' comment here:
https://sourceforge.net/p/flightgear/ma ... /36327950/
James Turner wrote:Drop the KLN-89 code, since it's unused and not maintained for a long time: Canvas and the regular GPS code can easily implement a working KLN-89 or similar equipment now


Speaking in general, legacy 2D instruments are in the process of being ported to be processed by the Canvas system, and hard-coded owner-drawn gauges (navdisplay, wxradar, agradaretc - but also the kln89b) are also in the process of being phased out in favor of a Canvas based approach.

This is primarily to modernize the rendering pipeline, so that more modern OpenGL code can be used. Which is why legacy OpenGL code needs to be updated/ported or re-implemented/wrapped by using a Canvas "adapter":

http://wiki.flightgear.org/2022.X_Release_Plan
http://wiki.flightgear.org/Post_FlightG ... onal_items
http://wiki.flightgear.org/FlightGear_and_OpenGL_ES
http://wiki.flightgear.org/Unifying_the ... via_canvas


Again, it's worth keeping in mind that thanks to the Canvas system, FlightGear is now capable of emulating fairly complex avionics like the Garmin-based FG1000:
Image



In comparison, the KLN90B is rather simple and straightforward actually:
Image
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