Hello...
I understand that COG = the position in which the GPS module is, in degrees, facing North, is this correct?
If yes ...
I tried the TinyGPSPlus, FullExample library and noticed in the console that the CoG column is very difficult to update.
I thought it was a problem with the bookstore and tried the U Center GPS, the result is the same.
Question... can something be done to update the COG like the rest of the data...?
Sorry for the google translation.
Thank you.
"COG" = Course Over Ground:
https://raymarine.custhelp.com/app/answers/detail/a_id/3337/~/heading-versus-cog
COG is Course over Ground which is the direction the GPS is moving in, calculated when there is movement between two fixes.
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Thank you for the answers..
I suspected that he had to ... move.
Yes, I knew what COG was, but I only tried stationary,
I haven't tried it in motion yet, I will try it soon and let you know the result.
I also tried in motion, it updates .. a little faster, but not enough to use the course to London and COG calculations, controlling a servo, driving a car to a selected point., Maybe there is another driving option ..!! I did not find an example with GPS only. In combination GPS + Compass works excellently, but I want to try the simple version only GPS...
Thank you in advance...
Hi,
What is your application?
How accurate and fast do you want your GPS information?
Thanks.. Tom.. 
Thanks Tom.
I think the update speed would be enough 2-3 times per second.
I tried the option ... course to London - course to London... memorized,
but the radius in which it returns is large. Somehow you can get a maximum of 1m, I've seen some videos...but with boats.
In the version with compass ...compass - cours to london, the range is maximum 0.5m...
Eh? surely a course would be a bearing (degrees) - not a distance?
What accuracy of position fix are you getting?
AIUI, course is derived from position - so you can't get an accurate course if you're not getting an accurate position fix ...
Of course it is in degrees, but maybe the translation was a little messed up.
by radius I meant...
the car has its back to me and I want it to turn ... to me,
maybe now I understood myself better...regarding...the return radius
In the variant tried above, we obtained approximately 6m radius return, which we are not satisfied with.
A GPS will not tell you which way the car is pointing unless you move it enough of a distance forward\backwards that gets you a good COG.
To know which way the car is pointing you really need a compass.
Hello.
I know that movement is necessary, but it is also possible without a compass - Return home. I read the last comment about an autopilot and a friend has one..without a compass..I'm putting the link, so it's possible. I said that I tried, but it takes a long distance to return. The one bought by my friend turns a little wider than if it had a compass, but very satisfying.
If the COG is updated 2-3 times per second, it can replace the compass...
I hope the translation is understandable.
Autopilot...Автопилот АкваРобот научился разговаривать! - YouTube
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