RPI4 Raspbian 64 bit & LinuxCNC

elovalvo wrote:

To avoid the problems of compilation and updating I prepared the image of the experimental version of which I spoke in this link.
forum.linuxcnc.org/9-installing-linuxcnc...cnc?start=170#264143

linuxcnc_book.zip

Get a new SD, install this ready-made image and try with the Mesa card.
user: cnc
pwd: linuxcnc


Let us know.

tried the image and ran my gcode 5 or 6 times without getting the "hm2/hm2_7i96s.0: error finishing read" problem, so that was great!

i did get a single joint following error, so will look into that some more...

thanks again to all of you for your help

Hi everyone,

I am a new LinuxCNC user. Over the past weeks/months I read a lot about LinuxCNC, and tried it out on my Windows PC via a virtual machine (with no hardware attached). I really like the software and decided that I am going to use it in my CNC machine. As I don’t have a Linux computer I bought a  Raspberry Pi 4 GB.

It took me a while to get LinuxCNC running on the RPi. The dedicated ISO from the LinuxCNC downloads section didn’t work, but after some frustrations I eventually got it solved by using linuxcnc_book.img. The explanation from Elovalvo was helpful for me. Thank you very much for that! 

Unfortunately I soon ran into the next issue, as I have difficulties installing QtPyVCP.
I tried to install the software dependencies with the command listed at the bottom of this page:
www.qtpyvcp.com/install/prerequisites.html

This gave me a list of error messages as attached on the screenshot.
However I continued with installing QtPyVCP, which did not generate any strange messages, but in the end it did not work so I guess it has something to do with the software dependencies.

My background is that I have quite a lot of experience in Python scripting (including graphical user interfaces) and a bit of Windows PowerShell, but apart from some very basic usage I am not at all familiar with Linux.

Actually it makes me doubt whether or not I should proceed with the Raspberry Pi approach, as I got the feeling that this is not the easiest or most robust way of using LinuxCNC… The software made me very enthusiastic when I used it on a virtual machine (without any hardware attached). But since I got the RPi things don’t go as smoothly as I hoped, maybe the learning curve is too steep for someone without Linux experience?
I was planning to order a Mesa 7C81, but as this card is dedicated for RPi I am still somewhat hesitant about that.

Does someone perhaps recognise the QtPyVCP issue and knows how to solve it?
Looking forward to your replies!

From what I see I think it's a problem due to updating.
I recommend, before installing the software dependencies, to run these commands:

sudo apt update
sudo apt upgrade

Thank you for your input, this did indeed solve the issue.

Success!
After floundering on-and-off for years (no joke) trying to get a functioning install, this thread hands me a functional solution on a silver platter ! I've somehow always managed to find myself with some sort of hardware compatibly issues - this time, just as warned, the official SD image doesn't play nicely with my Pi4 8GB . But (!), as I've already said, the image supplied by elovalvo (on page 16) is showing more signs of life than anything I've managed to procure on my own:

I have a some ways to go to get it to work with my Mesa 7C81, but I needed to make an account to say THANK YOU to elovalvo ~

There is also the Debian way. I'm hoping this will eventually be accepted into Linuxcnc docs
vmnet.com.au/linuxcnc/getting-linuxcnc.html

This is now superceded as its in the 2.9 documents now.
Please refer to this link instead. linuxcnc.org/docs/2.9/html/getting-start...etting-linuxcnc.html

I have used your 2.9 version. Running successfully in lathe.
For further enhancement I have used your latest book.zip.
Running smoother than previous one.
But in gmocappy side and lower menu not showing.

Thats more likely tto be a monitor size issue. Take it up in the Gmocappy section.

I currently have 2.8.4 running on an RPI4 with a 7C81, there's nothing wrong with that except this early version of raspbian doesn't run chromium except via a terminal with all kinds of "helpful suggestions" like "update your kernel" <lol>  Now I've got to choose the elovalvo way or the Debian way.

 

drummond wrote:

I currently have 2.8.4 running on an RPI4 with a 7C81, there's nothing wrong with that except this early version of raspbian doesn't run chromium except via a terminal with all kinds of "helpful suggestions" like "update your kernel" <lol>  Now I've got to choose the elovalvo way or the Debian way.


 

Annoyingly Chrome is not supported on any ARM hardware. This may install an open source version for you 
I'm not sure if this picks up your Google profile and al your bookmarks etc.