Raspberry Pi 4 with PlasmaC

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05 Jun 2020 12:02 #170244 by Mike_Eitel
I do not know if you have seen already how to prepare pi4 for ssd.

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05 Jun 2020 13:38 #170253 by tecno
Replied by tecno on topic Raspberry Pi 4 with PlasmaC
I have no SSD only 2.5" HDD and it will have to do for now.

Trying to setup RPi headless output via VNC on my tablet with 1280x800 but I can not find the correct settings in RPi to get full Gmoccapy on the tablet.

Any hints on how to get this working is much appreciated.

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05 Jun 2020 14:33 #170259 by tecno
Replied by tecno on topic Raspberry Pi 4 with PlasmaC
I have managed to get display resolution fixed so now almost the whole screen of Gmoccapy is there.
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05 Jun 2020 16:12 #170264 by tecno
Replied by tecno on topic Raspberry Pi 4 with PlasmaC
Obviously not my friend this RPi4 is :(

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06 Jun 2020 00:28 #170304 by phillc54
I think I set mine in /boot/config.txt
hdmi_group=2
# 1680 x 1050
hdmi_mode=58

HDMI modes are here www.raspberrypi.org/documentation/config.../config-txt/video.md

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06 Jun 2020 08:49 #170325 by tecno
Replied by tecno on topic Raspberry Pi 4 with PlasmaC
A good night sleep and one old fart can tinker better ;)

Config.txt = 27
and
change Display setting in RPi menu to 1200x800 and all is well.

I was close yesterday with a bit of overscan that bothered me.

So now I will copy my test settings from my PC and hopefully I can get all axis to move, that is the first goal then add IO.

Cheers from Sweden on our National Day

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06 Jun 2020 12:32 #170359 by Mike_Eitel
Hi tecno
You can get a pi4 ssd for low budged around 20-25$ fx wd-green ones.
I would propose you to go that road as soon you have prooven pi4 bbeing your solution.
Mike
One of the nice comparisons
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08 Jun 2020 12:46 #170634 by tecno

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08 Jun 2020 13:22 #170637 by tecno
Replied by tecno on topic Raspberry Pi 4 with PlasmaC
I added isolcpus = 1,2,3

But I stll get hm2/hm2_7i96.0: error finishing read

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08 Jun 2020 13:44 #170641 by PCW
Replied by PCW on topic Raspberry Pi 4 with PlasmaC

I am having problems with my Ri4

forum.linuxcnc.org/38-general-linuxcnc-q...s-ok?start=10#170630

forum.linuxcnc.org/38-general-linuxcnc-q...s-ok?start=10#170617

What have you guys done to get a good latency?


Looks like you are not running a real time kernel...

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