GPS position Open CPN

[Arthur1807]

Hello everyone,

After a 3 months break, the link between FURUNO gps and Open CPN on the laptop seems not working.
Since a few years no problem with position, trace etc... and now I only have SOG--- Nds COG°---

Is anyone has a solution for that? A tip of shat to do to get again our position on the software? And make trace routage. The old one is still here but I would like to be following on Open CPN.
GPS is working good, cables also, usb port also...

Pictures find attachments.

Thanks!

[Hakan]

Use Windows Device manager (ports COM LPT1) to see if the COM port designation for the GPS is there. (Take Serial DB9/USB out/in to check)

Check in Options->Connections if the GPS is connected to correct COM port and Baud rate. (See GPS for reference.)

Select "Show NMEA Debug window" to see what's received.

[wholybee]

Cheap Serial to USB adapters tend to change their com port assignments from time to time. So Hakan's suggestion is probably it. The COM port number has probably changed, and OpenCPN will need to be changed to the new correct port.

[sv_pelagia]

Any chance this is due to the Furuno date rollover issue?
https://panbo.com/2022-gps-rollovers...-and-who-else/

[Arthur1807]

Thanks so much for fast answers!

Well it seems to be COM4 or COM3 I don't know. I tried to fix it by CPN or windows settings but found nothing more. According to the skipper, nothing changed since the last season.


I will try by gps Furuno to check if I get more.

Thanks to all

[Corsair63]

Hi Arthur1807,

all those "old" GPS and specially Furuno, sometimes got the NMEA output burnt and unable to send data stream, that uses to happen when more than one output signal wire is used for several input devices.
just try to check if is there any signal or current.
also a good an easy program to check inputs in COM ports in computer is Termite rs232 freeware info in: https://www.compuphase.com/software_termite.htm

[wholybee]

I assume this is connected to the computer via a serial to USB adapter?
Press the windows key and type "device Manager" Then open "Ports (COM & LPT)"
If you unplug your converter, and then plug it in again, you will see what com port is assigned, or if there is a driver issue you will get an "!" icon. That's the first place to start.

[Corsair63]

Originally Posted by wholybee

I assume this is connected to the computer via a serial to USB adapter?
Press the windows key and type "device Manager" Then open "Ports (COM & LPT)"
If you unplug your converter, and then plug it in again, you will see what com port is assigned, or if there is a driver issue you will get an "!" icon. That's the first place to start.

Sure and agreed that must be the first step to check the com port involved with above steps. After that if problem persists to check if nmea data stream is arriving to de COM port (e.g. termite) and if not arriving checking the health of the GPS output, AFAIK that GPS has a menu option to check the impedance of the NMEA output, some time ago that was very popular in merchant vessels, I've sailed with some of them.