Small, simple NMEA 2000 instrument display

[ghost37]

Hi all - We're looking for a small NMEA 2000 display for our nav table down below. We don't need a Triton 2 type display, although we can certainly go that route, but it feels overkill and we prioritize simplicity and low power draw. All we're looking to do is have basic data like speed, wind, depth, etc. available down below. Ideally I'd like to just leave it on 24/7.


Yacht Devices used to make the (crude) device linked below. Anything out there that's between this and a Triton-type instrument display? I've done a bit of research and turned up unsuccessful.

Instrument display tor NMEA 2000 networks

Text display for NMEA 2000 networks that shows vessel's position, course and speed, wind and weather data and other details.

www.yachtd.com

 

[ryley]

I mean, a T2 draws 83mA which shouldn't break your power budget. I like the Triton/2 displays because you can get so many different data views on the pages. Or for a little more money you could add a Maretron IPG100 (<150 mA) to the network and do the displays on your phone or tablet over wireless (mobile app is free).

 

[ghost37]

Yeah hear you on the power draw difference being menial in the grand scheme of things. Maybe a T2 is the right path after all. We have one at the helm, and all of our instruments are B&G, so there's continuity there. Was hoping there was a smaller / simpler display out there, but I could use a treat after getting through this hellish watertight forward bulkhead project

 

[TradingUp]

@ghost37 — if you code, the yachts display is an afternoon's work with an Arduino and this:

https://www.tindie.com/products/voltlog/canlite-esp32-can-development-board/

I used the canalite to bridge a bluetooth anemometer to my nmea2000 network with this guy's library:

ttlappalainen - Overview

As a hobby sailing since 1987. As a profession programming since 1984. - ttlappalainen

github.com

 

[b393capt]

1) Couple a Triton2 with an on/off switch wired into a modified NMEA-2000 cable, and you can save 83 mA x 24 hrs, 20 Ahr per day. From power on to displaying information is pretty quick.

While it might be nice to have a paper white or other display that draws almost nothing, the T2 wired like this would be the least amount of work, compared to creating something from parts.

2) Another thought is one of those Garmin watches setup to display boat information but mount at your helm.

3) Lastly, consider a retired android smartphone connected via any of a couple of methods, without the sim card. More and more software for our boats is accessible in android, to the point it makes a good option to set one up permanently, without any password. The auto-screen sleep function saves a ton of power.

 

[Snowden]

Couple a Triton2 with an on/off switch wired into a modified NMEA-2000 cable

Or get the Garmin (GNX 21) / Raymarine (i70s) equivalents that have on/off switches...

 

[WHK]

1) Couple a Triton2 with an on/off switch wired into a modified NMEA-2000 cable, and you can save 83 mA x 24 hrs, 20 Ahr per day. From power on to displaying information is pretty quick.

While it might be nice to have a paper white or other display that draws almost nothing, the T2 wired like this would be the least amount of work, compared to creating something from parts.

2) Another thought is one of those Garmin watches setup to display boat information but mount at your helm.

3) Lastly, consider a retired android smartphone connected via any of a couple of methods, without the sim card. More and more software for our boats is accessible in android, to the point it makes a good option to set one up permanently, without any password. The auto-screen sleep function saves a ton of power.

Check your math - off by a factor of 10. That's about 2Ahrs per day and almost not worth turning off.

 

[b393capt]

Opps 1000 mA in an A