2021-04-04, 04:27 PM
(2020-12-12, 07:23 PM)Didier B Wrote:(2020-12-01, 02:50 PM)Divemaster Wrote: This is my first post in this place i hope i do it correctly.
In my RapsberryPi 4 with 8G ram 32GB sd card and installed and upgraded all newest packets with software i cannot connect SignalK to OPENCPN .
SignalK serwer is working i can add SDR Rtl, I2C sensors, GPS, but when im trying to connect OPENCPN to SignalK server it dont wont to connect. Im using standard connection in OpenCpn for SignalK on localhost and port 3000, signal and serwer is "detected " by OpenCPN properly during adding the conection but it not working after acceptation - not connecting to OPENCPN and OPENCPN not reciving any data from SignalK
Hi Divemaster,
In Opencpn, your only connection should be, from left to right :
Enable (yes), Network, Input, Signal K, localhost, 3000 , priority : 1 .
Of course as OpenCPN will receive signal K flow and no NMEA flow, the NMEA debug window will not be populated and stay empty...
Add the 'GPS in view' to your dashboard. If not empty, then OpenCPN do receives your GPS info.
Getting a FIX is indicated by the ship icon red color, and the 3 bars in the compass/GPS/status window.
That indicator is controlled by a tick box in the options/Customization panel.
About delay in getting 1st FIX : GPS needs to receive, from the satellites, 'Almanac' data about their status, positions and trajectories, before being able to deliver a FIX (position).
This 'Almanac' data, being non-real time, is carried by very slow sub channels, and it take many minutes/hours before it can be collected by your GPS puck (coldstart).
Happily, in your GPS module is a RAM and a tiny battery, which avoid that delay at each startup (warmstart), as the Almanac data remains valid for some period.
(don't ask me how long !).
Make sure your GPS has a good sky view, and if you use USB3, keep it at the cable length distance (>1.5 m)from the RPI !
Be patient and let it work overnight !
Batteries having limited life span, if you start a long passage you should have a fresh spare GPS onboard !
I have not found a GPS puck with a replaceable battery so far, programed obsolescence !
If, like me, you hardly can say goodbye to the NMEA debug window, I will post a work around in "How I did it" in the coming days ...
Thank you Didier,
I have been pounding away trying to get the satellite bar status to come up in the dashboard all night. It’s been working all along. LoL