New electronics. Nmea 2000. Multiplexer etc

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roblpm

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I am finally fed up with my ancient stowe electronics. Its the only mistake I have made since I bought my boat 4 years ago. Spent money on them. Should have junked them.

Anyway I can buy a new wind/depth/speed package. But it will be NMEA 2000 I think. Thats fine.

However my radio outputs nmea0183. And my ST2000 autohelm will like nmea0183 wind information I think. And I have another requirement for nmea0183 over wifi.

So is there a multiplexer that does all this.

Or actually maybe I get an nmea0183 multiplexer and one of the inputs is all the stuff from the nmea2000 bus through a convertor?

Hmmmmmmm
 
A Shipmodul Miniplex-3-N2K-Wi multiplexer will handle all that with room for more. No need for converters or multibox solutions. It would be very futureproof.

miniplex-3f.png


http://www.shipmodul.com/en/miniplex-3.html#mpx3wi

Other solutions might be available depending on what exactly your instrument upgrade consists of.
 
Last edited:
bitbaltic said:
A Shipmodul Miniplex-3-N2K-Wi multiplexer will handle all that with room for more. No need for converters or multibox solutions. It would be very futureproof.

miniplex-3f.png


http://www.shipmodul.com/en/miniplex-3.html#mpx3wi

Other solutions might be available depending on what exactly your instrument upgrade consists of.
Click to expand...

Says wifi. But I think that is for communicate. Can't see wifi nmea broadcast?
 
Actually I see that nmea0183 is available on wifi or usb. So you are right. Looks perfect. Just need to add £350 on to the project.....

I think I will be removing all this expenses electronics and putting something else back on when i sell the boat though....!!
 
I don't know about newer plotters but my Garmin 7012 accepts and transmits 0183 and N2K. It multiplexes most of it too so you might find a plotter does all you want.
 
bitbaltic said:
No idea on that one....
Click to expand...

Ok i have abandoned my laziness and started reading the manual....!

It only sends the data on tcp. Only one connection.

Need an external access point to broadcast on udp. Hmmmmm. Not a deal breaker but a bit of a pain.
 
roblpm said:
Ok i have abandoned my laziness and started reading the manual....!

It only sends the data on tcp. Only one connection.

Need an external access point to broadcast on udp. Hmmmmm. Not a deal breaker but a bit of a pain.
Click to expand...

Can the vyacht router do multiple devices? It certainly handles N2K and 0183 but I don't know much about it. There are some users on here so someone might know.
 
bitbaltic said:
Can the vyacht router do multiple devices? It certainly handles N2K and 0183 but I don't know much about it. There are some users on here so someone might know.
Click to expand...

The vYacht will accept multiple 0183 inputs, a Seatalk input and N2K, multiplex them all and output them as 0183 via a wired output or wifi. The wifi will work with more than one device, i connect to mine simultaneously with a laptop and a tablet.

If the AIS input is N2K it will not correctly convert it to 0183. If too many devices are connected i'm told it struggles to convert everything. Other than that, seems to work fine. If those two limitations are acceptable, then, at about £130 it's not a bad solution. The ShipModul is undoubtedly a better product, but is nearly 3 times the money.
 
PaulRainbow said:
The vYacht will accept multiple 0183 inputs, a Seatalk input and N2K, multiplex them all and output them as 0183 via a wired output or wifi. The wifi will work with more than one device, i connect to mine simultaneously with a laptop and a tablet.

If the AIS input is N2K it will not correctly convert it to 0183. If too many devices are connected i'm told it struggles to convert everything. Other than that, seems to work fine. If those two limitations are acceptable, then, at about £130 it's not a bad solution. The ShipModul is undoubtedly a better product, but is nearly 3 times the money.
Click to expand...

Hmmm. Tricky. Does someone know the technical difference between the wifi broadcast? Is it just tcp vs udp?
 
roblpm said:
Hmmm. Tricky. Does someone know the technical difference between the wifi broadcast? Is it just tcp vs udp?
Click to expand...

The vYacht is TCP and they claim "unlimited" connections.

Depending on the plotter, you may not need a multiplexor. It my be that you will only have a single 0183 port though, which you could use to connect the autopilot, then a 0183 to N2K convertor would get the AIS from the VHF into the N2K network.

Your solution really will depend on how much you want to invest and what the actual display is that you plan to use.
 
PaulRainbow said:
The vYacht will accept multiple 0183 inputs, a Seatalk input and N2K, multiplex them all and output them as 0183 via a wired output or wifi. The wifi will work with more than one device, i connect to mine simultaneously with a laptop and a tablet.

If the AIS input is N2K it will not correctly convert it to 0183. If too many devices are connected i'm told it struggles to convert everything. Other than that, seems to work fine. If those two limitations are acceptable, then, at about £130 it's not a bad solution. The ShipModul is undoubtedly a better product, but is nearly 3 times the money.
Click to expand...
Paul
as you know my vyacht wifi works great, squirting my SH AIS data around the boat easily. However if I connect my ancient B and G nmea 0183 v 1.5 it crashes the whole lot. Any ideas?
Stu
 
skipper_stu said:
Paul
as you know my vyacht wifi works great, squirting my SH AIS data around the boat easily. However if I connect my ancient B and G nmea 0183 v 1.5 it crashes the whole lot. Any ideas?
Stu
Click to expand...

I'd suspect in the early days B&G used some proprietary sentences, as a lot of manufacturers did. The vYacht isn't coded to translate them and is crashing, although that would be bad error trapping.

My N2K network is only depth, STW, water temp and GPS data, it translates most of it, but doesn't do water temp, satellite status or one or two other minor things. It does 0183 AIS OK, but cannot do N2K AIS worth a toss. When i first got it, it put all the AIS targets in one spot, about 1000nm away. After an "update" i had vessels at anchor doing 90 knots etc. Bernd did 4 updates to try and fix it, then gave up. The latest was last October and he still hasn't fixed it.
 
PaulRainbow said:
The vYacht is TCP and they claim "unlimited" connections.

Depending on the plotter, you may not need a multiplexor. It my be that you will only have a single 0183 port though, which you could use to connect the autopilot, then a 0183 to N2K convertor would get the AIS from the VHF into the N2K network.

Your solution really will depend on how much you want to invest and what the actual display is that you plan to use.
Click to expand...

My idea really is to have raw data available on wifi.

Then I can use an ipad, phone, pc, whatever takes my fancy! Or even a plotter. But probably not. People may scoff but with probably 3 nav devices on board plus charts I think I will be ok......
 
roblpm said:
My idea really is to have raw data available on wifi.

Then I can use an ipad, phone, pc, whatever takes my fancy! Or even a plotter. But probably not. People may scoff but with probably 3 nav devices on board plus charts I think I will be ok......
Click to expand...

The raspberry pi I have onboard puts out nmea0183 over TCP (plus signalk and some web page stuff) I just tried 3 devices, laptop, netbook and tablet all running opencpn receiving over TCP port 10109 - gps, ais, barometer pressure & temperature which seemed to all run OK without complaining. The Pi connects to an access point run on a mobile phone as does eveything else, then the data comes through the RPI IP address given out by the phone. Or everything could connect direct to an access point created by the Pi, I just use the phone as that's where the internet is.

A Pi running openplotter might be worth at least having a think about, very powerful data shuffler/creator.
 
For a multiplexer, ShipModul is streets ahead of VYacht, as you can filter messages on each port, decide which ports they are routed to, etc. Also, I believe that they have just brought out a firmware upgrade that does both TCP and UDP simultaneously. VYacht's advantage is that it is also a router, if you want to have shared access to marina Wi-Fi for example.
Although primarily concentrating on NMEA0183 to Wi-Fi, you can see a comparison of devices here: http://nmeatools.com/Comparison
Tim
 
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