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Heading not passed to NMEA correctly
#1
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
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#2
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.
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#3
(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.
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#4
(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?
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