NMEA WiFi gateway

Updated 2023-11-06 !

I have searched for a solution transmitting the NMEA data, from the navigation network, via WiFi, to for example iSailor or other Tablet/Phone applications.

Most of these applications just accepts NMEA0183(N1) but many boats are also using SeaTalk 1(ST1) and NMEA2000(N2K).

This post will cover, kept compact, my best findings covering both a DIY and a commercial approach to handle the different protocols.

NMEA 2000 temperature sensor, wet exhaust

In former posts I used the temperatur sensor DS18B20, in several applications, but now it was time for the boats exhaust temperature and checking out YDTC-13 from Yacht Devices(YDTC). (But please note that the YDTC can be used in any temperature application.)

When you are boating, using the engine, it's very important that the cooling water always is present otherwise major damages can follow. In "wet exhaust" systems it's easy to get the temperature which I posted here.

Exhaust temperature measure, boat

Updated 2022-06-10 !

In other posts I blogged about a way to measure temperature with a Raspberry Pi(RPi), direct connected or via WiFi, together with the marine applikation SignalK(SK). In this post I will follow up with a short brief about the practical solution, measuring exhaust temperature in a boat and sending an alarm if the temperature exceeds a set value .

In "wet exhaust" systems it is very important that the cooling water, injected in the exhaust system, always is present otherwise major damages can follow.

If you wan't to avoid a RPi check this post with approved NMEA 2000 temperature sensors from Yacht Devices 

Volvo Penta NMEA 2000 Gateway

Updated 2021-06-15

It's always nice to have ALL information at the same place, navigator/plotter, when You are out with the boat. 

What could be missing is the engine information/data. If You have a Volvo Penta from 2006 or later it could be pretty easy.

There are some "standard" NMEA 2000 gateways to choose from, for example; 

• Volvo Penta has it's own 22813366, 3889758
• Raymarine ECI-100
• Maretron J2K100
• .....

NMEA WiFi gateway II

My thoughts, about NMEA WiFi have finalized ? since my first post in the subject and the Yacht Devices YDWG-02N is now installed in my NMEA2000/ST/NMEA0183 network and works just fine. 

I'm already using Raymarine ST => ST NG converter but otherwise I had bought the YDNR-02 instead which should have done the same job.

Please find some thoughts from the installation below.

Boat navigation network

In a former post a I presented our approach to mix a modern NMEA 2000(N2) network with the older Raymarine ST 1 network, installed 2006.

During the Years it has grown and been added with new functions. The pictures to the right is the actual layout.

The first add on was a N2 GPS described here.

Volvo Penta D4/D6 water pump leak

The sea water pump, labeled 3589907 and replaced by 21380890, was leaking a little so a change of seal was necessary. Numbers below refers to the explode view.

• Detach the generator belt from the pump pulley and the 2 hoses from the pump.
• Unscrew the water pump, 4 scews, from the engine block.
• Remove the cover, 7, from the pump.
• Pull out the impeller, 6.
• Remove the cam, 4, by unscrewing screw 18.
• Remove the washer, 22.
• Remove the lock ring 14 and washer 21.
• With a pliers remove the seal 8.

NMEA2000 GPS added

Adding a NMEA2000 GPS and add an additional cable to E120

So what happens when You add a NMEA2000, N2K, GPS to the network ?

Nothing much actually. No conflicts. The E120 is still "hocked" on the old Raymaring RS125 GPS and the Garmin GMI 10/20 shows the info from the new NME2000 GPS with some additional data compared to the old GPS.

The chosen GP:s is Garmin GPS 17X because it was on sale for just 20 €.  It is mounted behind the instrument panel.

The picture shows the GPS at the right and the ST converter in the upper part