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alright, awesome thank you!

question, your previous images had the rt already installed, is there some limitation to why they arent this time, or is it so you can hit update before loading the kernel?

This may not help but try downloading the latest version of rpi imager and using it to update the Pi's firmware.
Some of the older Pi 4B's require this.

So many questions.....

Why ros? Linuxcnc can do everything (robot and tape dispenser) and takes a few days to setup at most ...
imo ros is not very good.... So clumsy and bloated.... Takes forever to get anything done.... Seems faster to just code things from scratch....But maybe my brain is too smooth to understand it.

Imo if you are using it industrially use linuxcnc with a mesa board (7i96s prob) or a PLC. If it's for fun use whatever you want (klipper, rasp pi, 3x printer boards, etc). Raspberry pis are typically not as reliable as a PC with a mesa board.

To install raspian12 bookworm image, prepare an SD card with the RaspiOS version for the type of Raspberry you are interested in (pi4, Pi400, Pi5).
I find it comfortable
www.raspberrypi.com/software/
because it also allows you to select various options (ssh, wifi, locales, etc..).

Boot the SD and run these commands from the terminal to update the RaspiOS version


Upon reboot, copy the install-kernel files and the zip file to the /tmp directory

Then run these commands from terminal


(in the case of Pi4 and PI400)

or
(in the case of Pi5)

So you need to edit the cmdline.txt withadding the following commands to the end of the line
isolcpus=2,3 rcu_nocbs=2,3 nohz_full=2,3 max.processor.cstate=1

elovalvo wrote:

No, the images are different.
If you wait a couple of days I can create updated ones for both versions of Raspberry

Here are the files I promised you

drive.google.com/file/d/1jBEO7Acl0C0t4id.../view?usp=drive_link  (Pi5 - kernel-6.6.32-v8-16k-elv.zip)

drive.google.com/file/d/1B58q4xJgBR4GnxI.../view?usp=drive_link  (Pi4, Pi400 - kernel-6.6.32-v8-elv.zip)

drive.google.com/file/d/1ltrkbEiI_BssNY0.../view?usp=drive_link (install-kernel)

Since for building the RT kernel I followed this procedure (forums.raspberrypi.com/viewtopic.php?t=343387), in the next post I describe the procedures for using.

Forgot about this one, the RPi4 network interface is known to go "sleep", some users reported this occurring after boot.

It would be interesting to see if the ping issues happen when the Mesa card is connected to a non-RPi device.

Where the network symbol is in the top right, click on that and that opens the network manager. Can't remember whether Rod left this off to reduce image size, so it may not be there. I was assisting Rod when he was putting the image together and I was including a "little bit extra" in the images I was putting together, so that's why the old memory maybe a bit hazy.

I there any reason you have a /8 mask (16,777,216 hosts from memory this is a publcily routable network, it's be a while since my networking course) rather than a /24 mask (256 hosts which is reserved for private\home networks ) and there is no need for a gateway as there are no other devices on that network subnet. Who recommended these values ?

Using the official download image without any modifications.

I cannot find Network Manager on this release.

Used Terminal to launch "menu-config".
Get a dialog box with options to edit entries.
All wifi channels deactivated.
Only one one wired channel activated and edited per:
- Device: eth0 ( ::::: ) as reported by "ip a",
- IPv4 config: Auto,
- Address: 10.10.10.11/8,
- Gateway" 10.10.10.1,
- IPv6: Ignore,
- Automatically connect: [x],
- Available all users: [x].

All workshop equipment and ancillaries de-energized.
Steppers powered off.
VFD in adjacent cubicle powered on, but not operating spindle.
Operation as reported earlier with lost packets.

John.

Just out of interest if you disable the wifi netwotk via the network manager do you still notice this behaviour.
What are the subnets of the Mesa & Lan networks ?

Hi John my email is in my github profile, github.com/kzali, please contact me and I will be happy to work something out.

cheeers
Kamran Zali

Kamran,
Thanks, I will take you up on your offer.

Powered up the system at 15 degrees C this morning and got for ping "not reachable".
Went through menu-config, changed nothing.
Then ping and got 86 packets through, frozen count, stats 45% lost.

Earthing looks good, card power is 5.07 V.

John.

I have a 7i96 brand new and unused, You are welcome to contact me in the Sydney area and Cornholio has my contact.

Cheers
Kamran

Contact details are on my gtihub page.
github.com/ozzyrob

Tried a third cable this morning with similar results.

cornholio,
Thanks for the kind offer, I will send a PM.

John.

edit:
Well, PMs don't work.
How can we get in touch ?

John.

I've got the equipment & ability to do that sort of work, based in Sydney myself, used to work as a tech for one of the larger EFTPOS companies doing smd board level repairs. I could even just look at it for you you.

But fully understand if you want to go through Mesa.