Send NMEA 0183 message to SignalK through node-red

[Philippe Kernévez]

Hi,

I'm using signalk through node-red on an open-plotter installation (on a PI).

There are example for incoming message like USB-GPS sending position message to node red.

I'm implementing a Man Over Board detection based on BlueTooth LE devices (not yet publish as it's only a draft at the moment).

I have a python script that look for BLE devices, then my node-red flow detects a missing BLE device and in this case switch on a buzzer and show the position of the boat at the moment of the vanishing.

Now I would like to send at the same time an NMEA MOB message ( https://www.nmea.org/Assets/21030814%20nmea%200183_man%20overboard%20notification_mob_sentence%20amendment.pdf ).

The idea is to receive the message in OpenCpn to have information to rescue the MOB.

It seems that the MOB message isn't supported ( https://github.com/SignalK/signalk-parser-nmea0183 ) event I doesn't look for a parser but a serialiser.

Do your have a pointer on how to send a NMEA 0183 message from node-red, then have the right serialisation mechanism to send the NMEA message ?

Regards,

Philippe

MOB Format :

[Scott Bender]

Probably the right way to do this is to send a Signal K MOB notification and then update to signalk-to-nmea0183 plugin to send a message when a notification is received.

You should also take a look at my new node-red plugin for node server: https://github.com/SignalK/signalk-node-red. It has the ability to send 0183 messages. You would have to write a function to format the message yourself.

-=Scott

[Jean Vasic]

Hello Philippe, did you resolve the problem ? I am at very same stage …