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True wind output
#4
Exclamation 
Sounds I have the similar problem.

I am trying to setup system to calculate true wind and output it over NMEA, but for some reason signalK does not do this work. Could you please help to setup my system?
Is true wind calculation works for somebody well?



my configuration:
Raspberry pi 3 B
I have openplotter version 1.2.0 alpha
signalK version 1.11.0
signalk-to-nmea0183 version 1.3.0
Devived data and polars - could not find version


I setup "derived data with polars" plugin
check "Active", "True wind angle..."

In "Convert to EMEA" added 
MWD - Wind relative to North, speed might be ground speed.
MWV - Aparent Wind heading and speed
MWV - True Wind heading and speed

VWT - True wind speed relative to boat.

I have IMU, GPS, Wind sensor and BMP280 connected, but Speed over water is simulated due i am playing on the bench.


My wind sensor it sends message (example)

$GPMWV,088.0,R,7.4,N,A*29

I have speed through water (from simulator)
I have compas and GPS

Sounds it should be enough for calculation , but I can see only repeating apperent wind only message from signak K 
[b]$INMWV,91.00,R,3.81,M,A*0B
[/b]


[b]
BUT NO CALCULATED TRUE WIND DATA 


server and raspberry was restarted several times
[/b]


10110 tcp port NMEA output (i see all signal k outputs there but mo true wing data)

$GPGGA,144544.000,3331.9997,N,08140.6577,W,1,06,1.1,111.7,M,,,,0000*1B

$GPGSA,A,3,10,32,31,15,18,24,,,,,,,1.7,1.1,1.4*38
$GPMWV,088.0,R,7.4,N,A*29
$INMWV,91.00,R,3.81,M,A*0B
$GPGSV,3,1,11,20,71,092,11,10,67,346,13,32,46,283,21,24,33,047,28*71
$APXDR,A,23.389,D,PTCH*48
$APXDR,A,-0.149,D,ROLL*48
$APHDM,137.764,M*33
$IIHDG,137.76,,,,*7D
$IIHDM,137.8,M*2F
$GPGSV,3,2,11,14,32,266,,21,29,181,20,12,16,102,16,25,14,136,*7A
$IIXDR,A,23.4,D,PTCH,A,-0.1,D,ROLL*45
$GPGSV,3,3,11,18,08,321,29,31,08,208,26,15,07,069,21*48
$IIMMB,29.6875,I,1.0053,B*79
$IIXDR,P,1.0053,B,Barometer*10
$IIMTA,22.68,C*3B
$GPRMC,144544.000,A,3331.9997,N,08140.6577,W,0.75,78.24,270119,,*20
$IIHDG,137.76,,,,*7D
$OCXDR,A,-0.1,D,ROLL*58
$OCXDR,A,23.4,D,PTCH*53
$APXDR,A,23.386,D,PTCH*47
$APXDR,A,-0.157,D,ROLL*47
$APHDM,137.764,M*33
$IIHDG,137.76,,,,*7D
$IIHDM,137.8,M*2F

Ksignal log
{"updates":[{"source":{"sentence":"HDM","talker":"AP","type":"NMEA0183","label":"OPpypilot"},"timestamp":"2019-01-27T14:05:09.210Z","values":[{"path":"navigation.headingMagnetic","value":2.4255189686353775}]}],"context":"vessels.urn:mrn:imo:mmsi:123456789"}
{"updates":[{"$source":"OPsensors.I2C.BME280","values":[{"path":"environment.outside.pressure","value":100473.652772},{"path":"environment.outside.temperature","value":294.56},{"path":"environment.inside.humidity","value":0.30684165692}],"timestamp":"2019-01-27T14:05:09.256Z"}],"context":"vessels.urn:mrn:imo:mmsi:123456789"}
{"updates":[{"source":{"sentence":"GGA","talker":"GP","type":"NMEA0183","label":"OPkplex"},"timestamp":"2019-01-27T14:05:09.000Z","values":[{"path":"navigation.position","value":{"longitude":-81.67772666666667,"latitude":33.533393333333336}},{"path":"navigation.gnss.methodQuality","value":"GNSS Fix"},{"path":"navigation.gnss.satellites","value":6},{"path":"navigation.gnss.antennaAltitude","value":111},{"path":"navigation.gnss.horizontalDilution","value":2},{"path":"navigation.gnss.geoidalSeparation","value":0},{"path":"navigation.gnss.differentialAge","value":0},{"path":"navigation.gnss.differentialReference","value":0}]}],"context":"vessels.urn:mrn:imo:mmsi:123456789"}
{"updates":[{"$source":"OPsensors.I2C.MPU-925x","values":[{"path":"navigation.attitude","value":{"pitch":0.382785622076,"roll":-0.000314159274,"yaw":0}}],"timestamp":"2019-01-27T14:05:09.522Z"}],"context":"vessels.urn:mrn:imo:mmsi:123456789"}
{"updates":[{"source":{"sentence":"HDM","talker":"AP","type":"NMEA0183","label":"OPpypilot"},"timestamp":"2019-01-27T14:05:09.710Z","values":[{"path":"navigation.headingMagnetic","value":2.4253095291250903}]}],"context":"vessels.urn:mrn:imo:mmsi:123456789"}
{"updates":[{"$source":"simulator.0","values":[{"path":"navigation.speedThroughWatter","value":2.2050666666666663}],"timestamp":"2019-01-27T14:05:09.754Z"}],"context":"vessels.urn:mrn:imo:mmsi:123456789"}
{"updates":[{"source":{"sentence":"MWV","talker":"GP","type":"NMEA0183","label":"OPkplex"},"timestamp":"2019-01-27T14:05:10.068Z","values":[{"path":"environment.wind.speedApparent","value":0.051444457477040344},{"path":"environment.wind.angleApparent","value":1.9373154701560522}]}],"context":"vessels.urn:mrn:imo:mmsi:123456789"}
{"updates":[{"source":{"sentence":"RMC","talker":"GP","type":"NMEA0183","label":"OPkplex"},"timestamp":"2019-01-27T14:05:09.000Z","values":[{"path":"navigation.position","value":{"longitude":-81.67772666666667,"latitude":33.533393333333336}},{"path":"navigation.courseOverGroundTrue","value":5.3220324893214865},{"path":"navigation.speedOverGround","value":0.49386679177958726},{"path":"navigation.magneticVariation","value":0},{"path":"navigation.magneticVariationAgeOfService","value":1548597909},{"path":"navigation.datetime","value":"2019-01-27T14:05:09.000Z"}]}],"context":"vessels.urn:mrn:imo:mmsi:123456789"}
{"updates":[{"$source":"OPsensors.I2C.BME280","values":[{"path":"environment.outside.pressure","value":100473.455253},{"path":"environment.outside.temperature","value":294.55},{"path":"environment.inside.humidity","value":0.306842722642}],"timestamp":"2019-01-27T14:05:10.258Z"}],"context":"vessels.urn:mrn:imo:mmsi:123456789"}
{"updates":[{"source":{"sentence":"HDM","talker":"AP","type":"NMEA0183","label":"OPpypilot"},"timestamp":"2019-01-27T14:05:10.309Z","values":[{"path":"navigation.headingMagnetic","value":2.424873196811992}]}],"context":"vessels.urn:mrn:imo:mmsi:123456789"}
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Messages In This Thread
True wind output - by barney2074 - 2018-09-22, 12:15 PM
True wind output - by tkurki - 2018-09-23, 06:33 AM
RE: True wind output - by barney2074 - 2018-09-23, 10:08 AM
RE: True wind output - by partyvi - 2019-01-27, 04:18 PM
RE: True wind output - by seandepagnier - 2019-01-29, 01:48 AM

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