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Old 24-06-2019, 05:10   #1
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Raspberry Pi 4

I was just about to pull the trigger on an Intel NUC for my next boat computer when I got an email from Farnell stating that the new Raspberry Pi 4 is on sale.


This thing can be had with 4gb of RAM, has dual HDMI ports, USB 3, and other attributes of a real computer.


Maybe I should give this a try? Is anyone using OpenCPN with Raspian? How well does it work?


Grateful for tips.
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Old 24-06-2019, 05:27   #2
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Re: Raspberry Pi 4

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Maybe I should give this a try? Is anyone using OpenCPN with Raspian? How well does it work?
.
I'm going for one but will leave the Pi3 (not B+) as it's plenty man enough to do the multiple tasks asked of it, includes running opencpn/signalk/openplotter, playback music/podcasts/streaming media/everything to a database and can just run GQRX as an SDR for weatherfax of just to listen to the radio though that's right on the edge. Pi 4 looks great but power draw a bit more for something which is on 24/7 and the 3 works just fine already. Opencpn plenty fast with graphics accelerator running.

But you've loads of power so why not go for the 4 Might be a moment before Openplotter has an image which will load though, or maybe it will.. Openplotter V2 out soon.
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Old 24-06-2019, 05:37   #3
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Re: Raspberry Pi 4

I use a lot of raster charts which apparently require a lot of resources, so I don't think I want to risk wasting a bunch of time with the Model 3. The 3 watts at idle of the Model 4 is quite acceptable to me. I also need the dual monitor support of the Model 4.


So you are saying I should use OpenPlotter as the OS instead of Raspian? Please comment.
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Old 24-06-2019, 05:39   #4
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Re: Raspberry Pi 4

Well, the buggers at Farnell have just written that they don't expect stock until September
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Old 24-06-2019, 05:39   #5
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Re: Raspberry Pi 4

What kind of mass storage are you using with your RP?
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Old 24-06-2019, 05:45   #6
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Re: Raspberry Pi 4

We're using Raspian w/a 3B and it works very well in non opengl mode. In opengl mode it was too slow. We've loaded ocpn v5.0, but have not played w/the configuration for opengl (supposedly will work), since we knew the Pi 4 was coming out this year. We want opengl to work well to run the digital radar that we waiting to purchase.

We are reading the reviews for the Pi 4 now and it seems its already sold out or not in stock on some sites. It appears the Pi 4 will be able to handle 2x 4k monitors so should be able to easily handle opengl. Looks promising.


This is how we set up our nav. computer w/a 3B.


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Old 24-06-2019, 05:48   #7
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Re: Raspberry Pi 4

Reading more reviews some old Raspian files may not be fully compatible (yet) w/the new OS on the 4.


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Old 24-06-2019, 06:01   #8
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Re: Raspberry Pi 4

I thought I was getting deja vu:

I posted about the Pi4 a few hours ago, and even mentioned you. Mods can you merge the threads please.

Anyway, I think once the the software has caught up and Openplotter is available the Pi 4 will be a great piece of kit.

In your other thread I linked to some other single board units with much faster CPU and graphics than the Pi3B+

The Pi 4 brings it up to date with some of these, but backed with the excellent software support and community us Pi users already enjoy.

The 4GB model is sold out, so I'm going to have to have to wait, but if anyone gets hold of one, please post a video of scrolling and panning in OpenCPN 5.
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Old 24-06-2019, 06:12   #9
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Re: Raspberry Pi 4

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I thought I was getting deja vu:

I posted about the Pi4 a few hours ago, and even mentioned you. Mods can you merge the threads please.

Anyway, I think once the the software has caught up and Openplotter is available the Pi 4 will be a great piece of kit.

In your other thread I linked to some other single board units with much faster CPU and graphics than the Pi3B+

The Pi 4 brings it up to date with some of these, but backed with the excellent software support and community us Pi users already enjoy.

The 4GB model is sold out, so I'm going to have to have to wait, but if anyone gets hold of one, please post a video of scrolling and panning in OpenCPN 5.

100% agree to wait for availability and let them catch up w/compatible software.


Can you shoot me the other thread link?


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Old 24-06-2019, 06:23   #10
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Re: Raspberry Pi 4

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100% agree to wait for availability and let them catch up w/compatible software.
It's exciting to be among the first to work with new hardware (I've done that - eg ESP8266), but as a rule - unless I am specifically wanting the excitement and ups and downs of being an early adopter, I generally don't jump on new hardware the moment it comes out. Especially if it's to be relied upon. So I'm happy to wait for the supply to stabilize, and for others to find and fix the 1.0 bugs that are inevitable.

Props and respect to those of you who are early adopters, though
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Old 24-06-2019, 06:34   #11
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Re: Raspberry Pi 4

I know it's a Pi 4, but what processor in your NUC are you using. My clients use image processing SW, and when the Pi first came out they were all excited about size/cost etc. I told them that their cell phone probably had more processing power in there. A multicore i3 vs a Pi of anything for processing is not equal. Possibly an Atom against a Pi 4. I know opencp is not CPU intense, but graphics are.
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Old 24-06-2019, 06:40   #12
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Re: Raspberry Pi 4

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I know it's a Pi 4, but what processor in your NUC are you using. My clients use image processing SW, and when the Pi first came out they were all excited about size/cost etc. I told them that their cell phone probably had more processing power in there. A multicore i3 vs a Pi of anything for processing is not equal. Possibly an Atom against a Pi 4. I know opencp is not CPU intense, but graphics are.

I'm trying to balance power consumption against power. I am using the radar plugin with OpenCPN and a bunch of raster charts so a certain amount of power is needed. My current box is Atom and 2gb of memory and it's not enough.


So I am going to try the N5000 Gemini Lake Pentium Silver which is the most powerful "small" Intel processor. I guess that the graphics processing is probably more important than the CPU power so I'm hoping that these new chipsets are more capable.
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Old 24-06-2019, 06:41   #13
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Re: Raspberry Pi 4

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So you are saying I should use OpenPlotter as the OS instead of Raspian? Please comment.
Openplotter 110%! Openplotter is Raspbian with unneeded bits removed and stuff like Opencpn & signalk installed. And openplotter itself which glues it all together with menus/graphical interfaces to set up the nmea/sensors etc coming in.

Quote:
What kind of mass storage are you using with your RP?
64Gb usb pendrive contains all charts and entire music collection. Filezilla makes it easy copy across to and from for stuff like mbtiles created from sasplanet on a laptop.
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Old 24-06-2019, 06:50   #14
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Re: Raspberry Pi 4

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Originally Posted by Dockhead View Post
I'm trying to balance power consumption against power. I am using the radar plugin with OpenCPN and a bunch of raster charts so a certain amount of power is needed. My current box is Atom and 2gb of memory and it's not enough.


So I am going to try the N5000 Gemini Lake Pentium Silver which is the most powerful "small" Intel processor. I guess that the graphics processing is probably more important than the CPU power so I'm hoping that these new chipsets are more capable.
What the pi had going for it was power and size. Haven't looked at the specs of a Pi 4 vs. its predecessors. If it is keeping the power down and doubling the speed, that is a really nice package.

I wonder if anyone is considering using a snapdragon SBC?
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Old 24-06-2019, 07:32   #15
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Re: Raspberry Pi 4

I'm getting a odroid N2, which is simular to a pi4, to use as a desktop. Very low power. 7 times faster then pi3. Pi4 would have more support though.
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