Installing LinuxCNC 2.9 on Raspberry Pi 4B with Preempt-RT kernel
08 Jan 2023 12:41 #261258
by RMS
Replied by RMS on topic Installing LinuxCNC 2.9 on Raspberry Pi 4 with Preempt-RT kernel
Alan,
Thanks.
The instability I was experiencing was particularly related to network connection.
The CM4 has heatsink with a fan attached, so there must be some other type of issue.
BR,
RMS
Thanks.
The instability I was experiencing was particularly related to network connection.
The CM4 has heatsink with a fan attached, so there must be some other type of issue.
BR,
RMS
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08 Jan 2023 18:39 #261293
by andypugh
I have had decent results with the passive heatsink cases:
www.amazon.co.uk/dp/B082Y2RGMP
I haven't tried this style, but it looks like it might be at least as good, and it's more of a case.
www.amazon.co.uk/dp/B08L8M6GJ7
(Not promoting any particular supplier, just indicative of the style of case I am talking about)
Replied by andypugh on topic Installing LinuxCNC 2.9 on Raspberry Pi 4 with Preempt-RT kernel
1. I've added a note about needing an very large heat sink.
I have had decent results with the passive heatsink cases:
www.amazon.co.uk/dp/B082Y2RGMP
I haven't tried this style, but it looks like it might be at least as good, and it's more of a case.
www.amazon.co.uk/dp/B08L8M6GJ7
(Not promoting any particular supplier, just indicative of the style of case I am talking about)
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09 Jan 2023 01:35 #261319
by RMS
Replied by RMS on topic Installing LinuxCNC 2.9 on Raspberry Pi 4 with Preempt-RT kernel
looks cool - ha ha
thanks
RMS
thanks
RMS
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09 Jan 2023 23:22 #261389
by RMS
Replied by RMS on topic Installing LinuxCNC 2.9 on Raspberry Pi 4 with Preempt-RT kernel
After closer look at overclocking instabilities, I am leaning to conclusion that culprit might be in the wall transformer current deficiency.
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11 Jan 2023 16:43 #261587
by RMS
Replied by RMS on topic Installing LinuxCNC 2.9 on Raspberry Pi 4B with Preempt-RT kernel
@Alan
Few days ago, I have stumbled by calling “halcompile”, while trying making changes in userkin.comp
The $ sudo apt-get install linux-cnc will not work with our new kernel: Linux linuxcnc29 5.15.84-rt54-v8+ #1 SMP PREEMPT_RT Fri Dec 23 20:39:48 CET 2022 aarch64 GNU/Linux,
thus, we need to bring latest source from GitHub
With lovely receipt of installation brought by Alan, and already dependencies in our system in place the recipe for building linuxcnc-dev is below.
####################
Here are the steps:
Ideally like before git the branch in your /home/pi directory
$ git clone github.com/LinuxCNC/linuxcnc.git linuxcnc-dev
#after you git go to src
$ cd linuxcnc-dev/src
$ ./configure --help
$ ./autogen.sh
# To check what options are available invoke configure with –help
$ ./configure –help
#I have decided to use only additional three parameters
$ ./configure --with-realtime=uspace --with-boost=yes --with-libusb-1.0
$ make -j4
$ sudo make setuid
$ source ../scripts/rip-environment
$ runtests
$ linuxcnc
Above last cmd will invoke build “in place” a new version of linuxcnc.
LINUXCNC - 2.10.0~pre0
Note:
Linuxcnc-dev 2.10.0~pre0 is confined in own directory and is not interfering with previous deb install
Worth to mention to novice members that selection between versions is easy.
A fresh terminal window without setting rip-environment
$ linuxcnc
Brings LINUXCNC - 2.9.0~pre1
However, after dwelling into subfolder scripts of linuxcnc-dev and setting source like below
$ source rip-environment
Linuxcnc-dev 2.10.0~pre0 will be chosen instead.
I must admit when I started working with linuxcnc it was confusing at the beginning.
Alan perhaps you can complement your instructions with my notes, so everything will be more compact.
Thanks
RMS
Few days ago, I have stumbled by calling “halcompile”, while trying making changes in userkin.comp
The $ sudo apt-get install linux-cnc will not work with our new kernel: Linux linuxcnc29 5.15.84-rt54-v8+ #1 SMP PREEMPT_RT Fri Dec 23 20:39:48 CET 2022 aarch64 GNU/Linux,
thus, we need to bring latest source from GitHub
With lovely receipt of installation brought by Alan, and already dependencies in our system in place the recipe for building linuxcnc-dev is below.
####################
Here are the steps:
Ideally like before git the branch in your /home/pi directory
$ git clone github.com/LinuxCNC/linuxcnc.git linuxcnc-dev
#after you git go to src
$ cd linuxcnc-dev/src
$ ./configure --help
$ ./autogen.sh
# To check what options are available invoke configure with –help
$ ./configure –help
#I have decided to use only additional three parameters
$ ./configure --with-realtime=uspace --with-boost=yes --with-libusb-1.0
$ make -j4
$ sudo make setuid
$ source ../scripts/rip-environment
$ runtests
$ linuxcnc
Above last cmd will invoke build “in place” a new version of linuxcnc.
LINUXCNC - 2.10.0~pre0
Note:
Linuxcnc-dev 2.10.0~pre0 is confined in own directory and is not interfering with previous deb install
Worth to mention to novice members that selection between versions is easy.
A fresh terminal window without setting rip-environment
$ linuxcnc
Brings LINUXCNC - 2.9.0~pre1
However, after dwelling into subfolder scripts of linuxcnc-dev and setting source like below
$ source rip-environment
Linuxcnc-dev 2.10.0~pre0 will be chosen instead.
I must admit when I started working with linuxcnc it was confusing at the beginning.
Alan perhaps you can complement your instructions with my notes, so everything will be more compact.
Thanks
RMS
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06 Feb 2023 13:10 #263819
by JT
Thanks for reminding folks about the Mesa Configuration Tool.
JT
Replied by JT on topic Installing LinuxCNC 2.9 on Raspberry Pi 4B with Preempt-RT kernel
I just thought I'd mention that rpi-imager is not in Debian 13 for sure and I've not checked older Debian OS's.1. On Linux desktop computer
Everything in this section should be run on your Linux desktop computer. These commands were tested on Linux Mint 21, but any reasonably recent Debian distro should work.
1.1 Install Raspberry Pi Imager
sudo apt install rpi-imager
Thanks for reminding folks about the Mesa Configuration Tool.
JT
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06 Feb 2023 13:21 #263822
by JT
Replied by JT on topic Installing LinuxCNC 2.9 on Raspberry Pi 4B with Preempt-RT kernel
I didn't get very far until I had an error...
JT
john@cave:~$ cd rpi-rt-64
john@cave:~/rpi-rt-64$ git clone --depth 1 https://github.com/remusmp/rpi-rt-kernel
Cloning into 'rpi-rt-kernel'...
remote: Enumerating objects: 9, done.
remote: Counting objects: 100% (9/9), done.
remote: Compressing objects: 100% (7/7), done.
remote: Total 9 (delta 0), reused 6 (delta 0), pack-reused 0
Receiving objects: 100% (9/9), 6.17 KiB | 6.17 MiB/s, done.
john@cave:~/rpi-rt-64$ ls
notes.txt rpi-rt-kernel
john@cave:~/rpi-rt-64$ cd rpi-rt-kernel
john@cave:~/rpi-rt-64/rpi-rt-kernel$ make RASPIOS_IMAGE_NAME=raspios_full_arm64
rm -fr build
make build raspios_image_name=raspios_full_arm64
make[1]: Entering directory '/home/john/rpi-rt-64/rpi-rt-kernel'
mkdir -p build
docker build --build-arg PLATFORM32= --build-arg RASPIOS_IMAGE_NAME=raspios_full_arm64 -t rpi-rt-linux .
make[1]: docker: No such file or directory
make[1]: *** [Makefile:16: build] Error 127
make[1]: Leaving directory '/home/john/rpi-rt-64/rpi-rt-kernel'
make: *** [Makefile:6: all] Error 2
john@cave:~/rpi-rt-64/rpi-rt-kernel$ JT
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06 Feb 2023 13:41 #263825
by tommylight
It is looking for Docker, although i wonder why, but
sudo apt install docker
should do just fine.
Replied by tommylight on topic Installing LinuxCNC 2.9 on Raspberry Pi 4B with Preempt-RT kernel
make[1]: docker: No such file or directorysudo apt install docker
should do just fine.
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- alangibson
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21 Feb 2023 08:31 #264936
by alangibson
Replied by alangibson on topic Installing LinuxCNC 2.9 on Raspberry Pi 4B with Preempt-RT kernel
To anyone looking for a low latency board computer that you can actually get your hands on, check out this thread.
forum.linuxcnc.org/18-computer/48113-odr...ent-for-raspberry-pi
We've managed to get sub-20 microsecond latency under realistic test conditions.
forum.linuxcnc.org/18-computer/48113-odr...ent-for-raspberry-pi
We've managed to get sub-20 microsecond latency under realistic test conditions.
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21 Feb 2023 08:33 #264937
by alangibson
Replied by alangibson on topic Installing LinuxCNC 2.9 on Raspberry Pi 4B with Preempt-RT kernel
> It is looking for Docker, although i wonder why
It uses docker as a stable build environment. That controls a lot of variables for you.
It uses docker as a stable build environment. That controls a lot of variables for you.
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