Mapping SOG to Speed Thru Water

[we9v]

Activate VHW in signalk to nmea0183 plugin and the data will be available over tcp on your server’s port 10110.

That's fine for OpenCPN running on the Pi (localhost:10110), but it doesn't put the VHW back out onto the boat's NMEA network/multiplexer.

You’ll have to be more specific than ”put that out…”. Tcp? Udp? Is the address the source or the target?

I have two WiFi connections on the Pi.  There's the wlan9 (10.10.10.1 or localhost) which is an access point.  The network in question is on wlan1 (192.168.1.x), where the Pi is a CLIENT, connecting to my YachtDevices YDNR-02 NMEA multiplexer which is the access point.  This is the source of all of my NMEA2000/NMEA0183/SeaTalk1 data.  That data is available on port 1456, a TCP connection.  The YachtDevices server is 192.168.1.1, and the Pi has a DHCP assigned address, usually 192.168.1.2.  I want to send the VHW sentence out on the wlan1 connection, on port 1456, so that the other devices on the NMEA/ST1 network can receive it.

I see in the data connection for my YachtDevices, there's a Output Events section, which is currently blank.  I changed that to nmea0183out, and everything that is checked in the Plugin Config > Convert Signal K to NMEA0183 section is now going out on that connect.  Yay, my Raymarine instruments are now reporting a speed on the TriData (although it's SOG, not STW), and the wind instrument display is now showing a TWS/TWD, although based on SOG.

Thanks for the nudge in the right direction.