What size memory Raspberry Pi?

[LostinFrance]

Hi, I'm thinking of dropping my laptop for a fitted in Raspberry Pi opencpn setup and I'm unsure what size memory option to take, 1,2,3 or 4Gb. I currently just run AIS and use grib files but maybe in the future fit a radar.

Any hints? I'd normally go for the biggest but there seems a significant difference in price and if big memory is not needed there isn't much point.
TIA

[verkerkbr]

Originally Posted by LostinFrance

Hi, I'm thinking of dropping my laptop for a fitted in Raspberry Pi opencpn setup and I'm unsure what size memory option to take, 1,2,3 or 4Gb. I currently just run AIS and use grib files but maybe in the future fit a radar.

Any hints? I'd normally go for the biggest but there seems a significant difference in price and if big memory is not needed there isn't much point.
TIA

I.am using the RPI4 with 2 GB. This works well. But perhaps 4 GB is somewhat better.

I'am using RaspiOS 64 Bullsey version.
OpenCPN in the flatpak version with all the plugins available.

SignalK as data server.

I'am running the complete system from a fast usb 3.1 stick(Samsung) with 64 GB.

Important to have a good power supply. Not these cheap usb things.

Bram

[LostinFrance]

Originally Posted by verkerkbr

I.am using the RPI4 with 2 GB. This works well. But perhaps 4 GB is somewhat better.

I'am using RaspiOS 64 Bullsey version.
OpenCPN in the flatpak version with all the plugins available.

SignalK as data server.

I'am running the complete system from a fast usb 3.1 stick(Samsung) with 64 GB.

Important to have a good power supply. Not these cheap usb things.

Bram

That was quick, thanks

[rslifkin]

Personally I'd go for more memory. It's not upgradeable on the RPi as far as I know, so the more powerful your hardware is, the longer you'll get before you have a reason to upgrade.

[thomm225]

Most folks are using the newer model Raspberry Pi's with 4GB or 8GB these days but older 2GB will work.

Looks like the prices have really gone up. A couple years ago I bought two 4GB Raspberry Pi 4 Cana Kits for $99 each.

The link below is for an 8GB board only.

https://www.amazon.com/LANDZO-Raspbe...35379750&psc=1

I am now using my old Toshiba Laptop with Windows 10 for OpenCPN.

[Rumrace]

I have the 8 with servo shield , cell shield, memory recording shield and charging shield on back with 2500mA back up.
I used a 3D drawing program in Linux but otherwise the pi turns on air opens a hatch two vents, two golden rod heaters, 2 cameras. The outside camera crapped out and was fine in spring thaw.

My Grandson is using a 4G to celestial navigate. At one point we had 3 on the boat at different levels of destruction. We made a dissolved oxygen sensor.
I’m not allowed to work on the boat. Laptops get thrown overboard by watch wife.
We use an iPad a Wisa box Samsung TV and BeoLab 3 for audio video. So the raspberry serves no purpose in that area either.

The single biggest problem is water proofing them so I 3D print a waterproof case for them. I’d say the only issue is fitting your own USB ends. It’s designed with two ports so a multiwire design per function.

[Hakan]

One example below when a RPi4 32 Buster is running OCPN and SignalK cruising with a lot AIS targets. Since I'm distanced Anydesk is running as well.
My Rpi400 64 Bullseye shows similar.

Info: Processes: 217 Uptime: 9d 11h 45m Memory: 3.82 GiB used: 1.44 GiB (37.6%) gpu: 76.0 MiB Shell: bash inxi: 3.0.32

[HeywoodJ]

I used a Pi 4 w/ 2GB running Openplotter/OpenCPN when they first came out. Started with the 32-bit OS, moved to 64-bit while it was in beta. Has always worked for me. However, did relegate that to other services and now use a Pi 400 4GB. Wish they had planned the 400 to have an SSD plugged into the case (plenty of room for it with some minor design considerations). For OpenCPN I find I prefer having a keyboard around, and the 400 means fewer cables (and it’s a relatively small keyboard).

[mgrouch]

Originally Posted by HeywoodJ

I used a Pi 4 w/ 2GB running Openplotter/OpenCPN when they first came out. Started with the 32-bit OS, moved to 64-bit while it was in beta. Has always worked for me. However, did relegate that to other services and now use a Pi 400 4GB. Wish they had planned the 400 to have an SSD plugged into the case (plenty of room for it with some minor design considerations). For OpenCPN I find I prefer having a keyboard around, and the 400 means fewer cables (and it’s a relatively small keyboard).

64-bit OS on 2Gb hardware is quite a waste of memory for not much benefits

[seandepagnier]

2gb is ok for opencpn, I dont think 4gb you will notice anything. 1gb will be a bit slower in many cases and 512mb is not enough.