Raspberry Pi w/ OpenCPN

[davidbirnie]

For some reason I had killed my access point functionality and decided to reinstall the OpenCPN installation from Sailoog. Everything is working fine now and looking into Oesenc plugin. Did my fingerprint change with this reinstall of opencpn on the same Pi which didn't change from a hardware perspective?

[bcn]

Depends...
If you installed a complete new image, then yes, this would be recognized as a different system.

Hubert

[davidbirnie]

Crap! What a big dependency this is on software changes... I couldn't figure out how to restore my access point functionality so thought let's do it the easy way. Reinstall using shift button during boot of the pi. So no other option to buy this map again from o-charts.org?

What could I have done to fix the access point functionality - switched off the wifi? (obviously it's working now again due to reinstall)

[conachair]

Better to ask here >
OpenMarine

Also buy a backup SD card/usb adapter and in the Accessories menu there is a SD card copier so you can have an exact copy of a working system. Pretty sure that doesn't effect the fingerprint if you don't select "new partition UUIDs" but maybe check on their forum about that. Same team are involved with the Esenc charts and have helped me out a lot in the past by resetting the fingerprint after Pi problems.

[davidbirnie]

Thanks will post the question there as well. Via their support I received the answer reinstalling the whole thing requires me to buy the maps again. There is no way around this so I think it's strange.

MS Windows is also tied to your hardware and not to software.

[conachair]

Originally Posted by conachair

Also buy a backup SD card/usb adapter and in the Accessories menu there is a SD card copier so you can have an exact copy of a working system. Pretty sure that doesn't effect the fingerprint if you don't select "new partition UUIDs" but maybe check on their forum about that.

Hmm, might be false memory with "don't create new partition UUIDs" when backing up onto a new card, there was some talk but can't find the posts now so might be a red herring, best check on the openplotter forums first.

[davidbirnie]

Thanks everybody. I am a Mac user so I will use the dd command in my terminal. I have verified it with a colleague at work and this should make an identical copy of the device.

I have reinstalled the device and ordered the maps again so extra 2 shots at keeping it right.

[Ben S]

I use Pi with SSD, wich is much faster as SD card.
Also much less change for system drive corruption when power is lost.
I mounted the M.2 SSD HAT under the Pi, connected with USB cable.

[rgleason]

BenS is this screwed into the underside of your nav station?
How do you connect the SSD?

[Ben S]

The SSD HAT is connected via USB, so its easy to mount under the Pi and the GPIO connector is free for the Moitessier HAT
I installed a 32 Gb transcend SSD in it.

I use the Pi with openplotter headless setup
Ethernet cable connects the Pi to my Windows 10 PC with Faytech touchscreen running O.

This is the M.2 SSD HAT
https://www.conrad.be/p/m2-sata-ssd-...rry-pi-1487097

[Ben S]

Another pic from my setup
Red board is the M.2 SSD HAT
On the right a decent 5A DC-DC convertor

If you go for Pi with SSD, make sure to buy M.2 HAT and SSD
Not the older Msata type

[rgleason]

Thank you Ben, it's amazing how small the memory is and how much space is left on the board. Is it any faster?

Here it is in English.
https://www.conrad-electronic.co.uk/...omSuggest=true

[stevead]

Just an FYI for Wiki/User Manual.

Just purchased a Raspberry Pi and I'm using Raspbian Stretch 2018-10-09

Following the install instructions got the following message:

gpg: keyserver receive failed: No dirmngr

which is mentioned in the OpenCPN user manual.

My solution was the following:

sudo apt-get install dirmngr

then the normal OpenCPN install commands

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys C865EB40
sudo apt-get update
sudo apt-get install opencpn

Installed successfully and using CM93 charts, appears to be working fine.

Dumb question, why does it install in the "Education menu option" ?

FYI, Using a Raspberry Pi CAN hat to connect to the NMEA2000 network to prototype/test the Linux version of the TwoCan plugin using the SocketCan interface.

[verkerkbr]

Originally Posted by davidbirnie

Thanks everybody. I am a Mac user so I will use the dd command in my terminal. I have verified it with a colleague at work and this should make an identical copy of the device.

I have reinstalled the device and ordered the maps again so extra 2 shots at keeping it right.

In the Raspian version there allready a copy program. Original called Piclone.

You only need an usb card reader/writer. Copies can be made between different SD cards. 32 to 16 and otherwise.

But an image with DD is also possible. But then you have to use an SD card of the same size.

With the latest kernel version and updates and the with the VC4 driver on. The RPI is running very fast.

Regards,



Bram

[mikedefieslife]

If you already have an old SSD drive lying around there's no need for an SSD HAT, you can just connect it via USB and boot from that. Still much faster than the SD card and without as much risk of corruption.