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+--- Thread: Heading not passed to NMEA correctly (/showthread.php?tid=488)
Heading not passed to NMEA correctly - Littlechay - 2017-05-12
Playing with version 0.11.4a here.
BME280 sensor working perfectly - thanks
This may be operator error as I have never managed to make it work before but I can't seem to get the magnetic heading passed to any NMEA sentence (HDM of HDG).
I can see the heading correctly in Signal K diagnostic but in NMEA all I get is a heading of between 4 and 6 that varies very little.
I'm using the NMEA sentence builder.
Is this some angle conversion in radians or something?
Chris
RE: Heading not passed to NMEA correctly - Sailoog - 2017-05-12
NMEA builder needs revision but it seems that your problem is about units. Signal k uses radian for heading you can convert to degree in NMEA builder but I don't know if this is working now.
RE: Heading not passed to NMEA correctly - ellgia - 2017-05-13
(2017-05-12, 05:03 PM)Sailoog Wrote: NMEA builder needs revision but it seems that your problem is about units. Signal k uses radian for heading you can convert to degree in NMEA builder but I don't know if this is working now.
I tried to generate NMEA HDM by converting radians into degrees with OP v0.11.4 and it works fine.
RE: Heading not passed to NMEA correctly - Littlechay - 2017-05-13
(2017-05-13, 09:52 AM)ellgia Wrote:(2017-05-12, 05:03 PM)Sailoog Wrote: NMEA builder needs revision but it seems that your problem is about units. Signal k uses radian for heading you can convert to degree in NMEA builder but I don't know if this is working now.
I tried to generate NMEA HDM by converting radians into degrees with OP v0.11.4 and it works fine.
Yes it does, I tried the same. Strangely though when I look at Signal K diagnostics it shows the heading degrees...
No does anybody have a recipe for generating a NMEA HDG message ... where does variation and deviation come from and are they also radians?