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Old 07-06-2022, 23:08   #106
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Re: How does OpenCPN compare to B&G, Raymarine and Garmin ? New boat install ?

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Originally Posted by Franziska View Post
Hey Sharky,

, for how long do you have the monitor?
Where did you get it?
Exact model?

Thanks,

Fran
I've had it for 4 months, and it lasted a wet winter in Portland Oregon. Got it from alibaba, company is sihovision. Only complaint is that it's a bit block shaped
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Old 08-06-2022, 01:13   #107
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Re: How does OpenCPN compare to B&G, Raymarine and Garmin ? New boat install ?

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Originally Posted by sv_sharky View Post
I've had it for 4 months, and it lasted a wet winter in Portland Oregon. Got it from alibaba, company is sihovision. Only complaint is that it's a bit block shaped
Thank you. Wet winter in Oregon sounds jucky enough to be an endorsement for the unit :-)
Do you know the exact model number?
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Old 08-06-2022, 06:14   #108
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Re: How does OpenCPN compare to B&G, Raymarine and Garmin ? New boat install ?

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Originally Posted by Franziska View Post
Thank you. Wet winter in Oregon sounds jucky enough to be an endorsement for the unit :-)
Do you know the exact model number?
I also have a Sinovision screen, 10.1" daylight 1000 nits with auto adjusting light sensor.

I have put this on the very sturdy Ram mount with ball connector.

I had a resistance monitor before, but now a capacitive touchscreen. This works much better.

But I also use a Logitech wireless keyboard with a pad in combination with the touch screen.

And an Ipad as a vnc client.


I have the model SL101. Is not completely watertight. Only the front panel.

Regards,


Bram
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Old 08-06-2022, 06:56   #109
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Re: How does OpenCPN compare to B&G, Raymarine and Garmin ? New boat install ?

Weíve been cruising full time for a year, currently in Mexico. I have been in the school of thought that our Raymarine is our primary plotter, navionics on the phone or tablet are used often and secondary, paper charts are the backup and OpenCPN was loaded on a laptop just in case, but I never used it because, frankly, I didnít like messing with it. Setup is easy but using it was annoying.

Then, three things happened, a cruiser we met held a seminar on using OpenCPN. It turns out, I didnít know how to use OpenCPN properly. That was lightbulb moment number one. Then, the second thing is he showed us how to use mbtiles to overlay Google and bing images on top of charts. That was amazing and highly useful. The third thing was that we started getting into zones where the Raymarine charts lack detail, are inaccurate, and thereís no other option that will work on the Raymarine.

On the OpenCPN I have ďShawn and HeatherísĒ excellent guide charts, navionics charts, and satellite imagery, and while switching between them is now much easier, the OpenCPN UI is still a but of a mystery to me in some places, but itís absolutely a game changer for us.

Now, OpenCPN on an android tablet is our primary navigation tool, the Raymarine provides a backup, has the data about our voyage and is our radar screen. The charts are vaguely helpful, but the tablet is our go-to.

For OpenCPN I had to learn about chart groups, that was the main key. MBTiles have made it possible for us to anchor in some amazing places, itís pure magic as far as Iím concerned. If you are going to remote places, you absolutely must have this system.

Go to the chartlocker website, spend the time to watch s/v Migrationís video, load the MBTiles, setup your chart groups properly, and boom, OpenCPN becomes awesome.

Now that Iím reading about brighter, waterproof screens widely available, I will be looking into upgrading when we are back in a place where we can do some upgrades. Screens just werenít available when we built our system six years ago. I wonít get rid of the Raymarine, but Iíd like to have the OpenCPN on a screen instead of a tablet, which can and does overheat. Especially here in tropics , a few minutes accidentally in the sun and it will shut down.

Iíll just add this, OpenCPN is awesome, designed for serious navigators. I think the User Interface and User Experience is confusing in parts. I give much respect to the hard working developers on the project, but Iíve talked to many people now that also had the ah-ha moment about the Chart Groups. Over time it has become easier to use, and will become easier.
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Old 08-06-2022, 07:31   #110
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Re: How does OpenCPN compare to B&G, Raymarine and Garmin ? New boat install ?

I got my professional start as an academic computer scientist and became involved with product development much later in my career. I've worked with a lot of different kinds of engineers. One thing that I've encountered over and over again, is the truth of the old adage, "Theory is a lot closer to practice in theory than it is in practice."

I have also noted, frequently, the degree to which software people grossly underestimate the complexity of putting a physical product together. When I see someone ask, "What's the big deal, IP67 connectors are a buck each?" I kind of roll my eyes. Your product is going to live or die by the way that the flexing of the sidewall of the IP67 case that you duly specified and sourced, interacts with the stiffness of the mounting flange on the IP67 connector that you also duly specified and sourced. And a million other little interactions and factors that are, in practice, extremely difficult to foresee.
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Old 08-06-2022, 14:06   #111
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Re: How does OpenCPN compare to B&G, Raymarine and Garmin ? New boat install ?

My system is a mixture of old transducers and new RPi based DIY electronics and is detailed in the video below:

https://youtu.be/enPFlHpmJVA

I also have a custom Sinovision 15.6" monitor that is IP67, 1000Nits, optically bonded and has an external dimmer from 0-100%. I also made a video reviewing it:

https://youtu.be/3y9jBpOEguE

I have been using OCPN and Openplotter/Signal K as my primary navigation and information source for the last two years and have had few issues with it. I do have a Garmin chartplotter as back up, as well as a phone and spare SD card.

Having said that, I would probably get depth, wind, boat speed, VHF and Autopilot fitted from the factory.
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Old 12-06-2022, 15:00   #112
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Re: How does OpenCPN compare to B&G, Raymarine and Garmin ? New boat install ?

Has anyone figure out how to integrate the "goto" or similar GPS based autopilot function on OpenCPN to an autopilot? I really like being lazy and not having to check and adjust the GPS compass setting on bluewater passages due to set and drift. I have used the alarm function when "drifting" outside a preset bandwidth. Its just not the same and does add passage time. The branded packages are a lazy man's dream for this calculating continuous set and drift on long passages.
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Old 12-06-2022, 15:26   #113
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Re: How does OpenCPN compare to B&G, Raymarine and Garmin ? New boat install ?

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Originally Posted by ngmayo View Post
Has anyone figure out how to integrate the "goto" or similar GPS based autopilot function on OpenCPN to an autopilot? I really like being lazy and not having to check and adjust the GPS compass setting on bluewater passages due to set and drift. I have used the alarm function when "drifting" outside a preset bandwidth. Its just not the same and does add passage time. The branded packages are a lazy man's dream for this calculating continuous set and drift on long passages.
I have a ShipModul that bridges the NMEA 0183 and 2000 and WiFi all together, so I can send route and waypoint sentences and they show up on my autopilot and vice versa. So yes, itís doable, but unfortunately I think I needed to do more filtering because this setup was making my NMEA 0183 crash. But anyway, what you want to do is possible if you have the right translator hardware/software/whatever. I like the ShipModul because itís low power, powerful, and designed for marine environment.
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