Raspbery Pi 4 - 4GB or 8GB - which one or both?
25 Oct 2021 12:36 #224254
by JacquidR
Raspbery Pi 4 - 4GB or 8GB - which one or both? was created by JacquidR
Hi there,
Pease advise for which Raspberry Pi4 the available downloadable image "LinuxCNC 2.8.1 Raspberry Pi OS based on Debian 10 Buster " .
The 4GB or the 8GB? Or both?
I am asking because there were previously issues with USB etc on the 8GB and now I am not sure if this is resolved with this latest available image. And I want to buy more pies but can't unless I know which RAM to purchase.
Thank you.
Regards, Jacqueline du Rand
Pease advise for which Raspberry Pi4 the available downloadable image "LinuxCNC 2.8.1 Raspberry Pi OS based on Debian 10 Buster " .
The 4GB or the 8GB? Or both?
I am asking because there were previously issues with USB etc on the 8GB and now I am not sure if this is resolved with this latest available image. And I want to buy more pies but can't unless I know which RAM to purchase.
Thank you.
Regards, Jacqueline du Rand
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27 Oct 2021 11:59 #224494
by andypugh
Replied by andypugh on topic Raspbery Pi 4 - 4GB or 8GB - which one or both?
I admit that I haven't tried running on a Pi for some time, and I created the SD images on the LinuxCNC site.
I would suggest going with the 4GB, mainly as it is cheaper and 4GB is enough for LinuxCNC.
I would suggest going with the 4GB, mainly as it is cheaper and 4GB is enough for LinuxCNC.
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27 Oct 2021 12:39 #224501
by Aaroncnc
Replied by Aaroncnc on topic Raspbery Pi 4 - 4GB or 8GB - which one or both?
Not to hijack the thread but.
Why no 64 bit image and only 32bit?
Why no 64 bit image and only 32bit?
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27 Oct 2021 12:42 #224502
by andypugh
(And, also, the buildbot that makes the debs was 32-bit)
Replied by andypugh on topic Raspbery Pi 4 - 4GB or 8GB - which one or both?
Simply that at the time I built the images Raspian was 32 bit and the pre-packaged preempt-rt kernel was 32-bit.Not to hijack the thread but.
Why no 64 bit image and only 32bit?
(And, also, the buildbot that makes the debs was 32-bit)
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27 Oct 2021 17:08 #224525
by Aaroncnc
I know there are a few build hidden in some threads but some users may have a hard time finding the latest one.
I know from my testing the 64bit images have better latency with my setup.
Replied by Aaroncnc on topic Raspbery Pi 4 - 4GB or 8GB - which one or both?
Will there be a 64bit image added?
Not to hijack the thread but.
Why no 64 bit image and only 32bit?
Simply that at the time I built the images Raspian was 32 bit and the pre-packaged preempt-rt kernel was 32-bit.
(And, also, the buildbot that makes the debs was 32-bit)
I know there are a few build hidden in some threads but some users may have a hard time finding the latest one.
I know from my testing the 64bit images have better latency with my setup.
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28 Oct 2021 20:06 - 28 Oct 2021 20:23 #224610
by elovalvo
Replied by elovalvo on topic Raspbery Pi 4 - 4GB or 8GB - which one or both?
At this link you can find the 64-bit deb packages for LinuxCNC version 2.8.2 and 2.9.0~pre0
forum.linuxcnc.org/9-installing-linuxcnc...lem?start=120#224608
forum.linuxcnc.org/9-installing-linuxcnc...lem?start=120#224608
Not to hijack the thread but.
Why no 64 bit image and only 32bit?
Simply that at the time I built the images Raspian was 32 bit and the pre-packaged preempt-rt kernel was 32-bit.
(And, also, the buildbot that makes the debs was 32-bit)
Will there be a 64bit image added?
I know there are a few build hidden in some threads but some users may have a hard time finding the latest one.
I know from my testing the 64bit images have better latency with my setup.
Last edit: 28 Oct 2021 20:23 by elovalvo.
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31 Oct 2021 10:28 #224756
by JacquidR
Replied by JacquidR on topic Raspbery Pi 4 - 4GB or 8GB - which one or both?
Thank you Andy.
We are also picking up issues now with the RPi freezing.
Will try the 64bit shared below by elovalvo. Hopefully it is resolved.
We are also picking up issues now with the RPi freezing.
Will try the 64bit shared below by elovalvo. Hopefully it is resolved.
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- EricKeller
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06 Nov 2021 03:11 #225462
by EricKeller
Replied by EricKeller on topic Raspbery Pi 4 - 4GB or 8GB - which one or both?
Mine doesn't freeze with Andy's image. I suspect you have a power supply problem.
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08 Nov 2021 09:35 #225645
by JacquidR
Replied by JacquidR on topic Raspbery Pi 4 - 4GB or 8GB - which one or both?
So with Elovalvo's image it doesn't freeze, however we cannot get G71 working on the 2.9 pre-release available for the RPis.
We have checked the power and no issue with power. 3A and 5V from the recommended RPi power supply.
We have checked the power and no issue with power. 3A and 5V from the recommended RPi power supply.
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08 Nov 2021 13:36 #225684
by andypugh
Replied by andypugh on topic Raspbery Pi 4 - 4GB or 8GB - which one or both?
G71 not working is almost certainly unrelated to power supply.
How does it not work. Have you tested with known-good sample files?
There should be three files in ~/linuxnc/nc_files/(sample?)/lathe_G7*
How does it not work. Have you tested with known-good sample files?
There should be three files in ~/linuxnc/nc_files/(sample?)/lathe_G7*
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