Re: [Emc-users] Mini-PC

[Chris Albertson]

My guess is there is a second WiFi network someplace.   WEP password should
be enough.

But yes, whitelisting all you MAC address would be "bomb proof" on that
network.   If there is another network it will not help.

People install all kinds o backdoors without knowing it with things like IP
cameras, printers, and whatnot.

But today not having WiFi is not even practical for most people.  My
fitness watch and bathroom scales and iPads don't have Ethernet jacks and
it's hard to run wires to the TV sets and so on.

I'd guess some device has an access point or more likely ad-hoc WiFi and
it's "routing".  No one is hacking a WEP WiFi.

On Sun, Sep 13, 2020 at 5:50 PM Gregg Eshelman via Emc-users <
emc-users@lists.sourceforge.net> wrote:

> Set your router to only allow connections from the MAC addresses of your
> equipment.
> Some other WPA PSK2 issues to have a look at.
> https://techbeacon.com/security/wpa2-hack-allows-wi-fi-password-crack-much-faster
> Check to see if DD-WRT has added anything new against hashcat and pixie
> dust attacks.
>
> On Sunday, September 13, 2020, 10:44:37 AM MDT, Gene Heskett <
> ghesk...@shentel.net> wrote:
>
>  On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:
>
> > You could prevent this by not using "password" or "123" as your
> > network password.
> >
> Aww, come on guy, even I know better than that, I can change the wpsk2 pw
> to any random 26+ char phrase, and his phone can hack it in 30 seconds
> or less.  I've played whack a mole with him several times, but I always
> wind up just turning the radio off.  Using dd-wrt, and all hardwired, no
> one I didn't give the credentials to has gotten in, in nearly 16 years
> now.  There are 2 ways I can route the wifi, to me, or to the network,
> so I don't enable the "to me". I have it set, when its on, to allow
> network access over a wifi path, but not to me.
>
> > I don't enable the wifi. I have a neighbor that will use 100gb a month
> >
> > > using my bandwidth instead of his with his smartphone.  So all my
> > > networking is hard wired.
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>


-- 

Chris Albertson
Redondo Beach, California

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Re: [Emc-users] Mini-PC

[Gregg Eshelman via Emc-users]

WEP is useless. WEP was cracked in three minutes almost 20 years ago. Byt 2007 
there were 1 minute or faster WEP cracks. WEP was replaced by WPA-PSK, which 
was also eventually cracked. Then came WPA-PSK2. That took linger to find fast 
cracks for but they exist now. Ine is called "hashcat" and another one is named 
"pixie dust". There are likely others.


On Sunday, September 13, 2020, 6:19:15 PM MDT, Chris Albertson 
 wrote:  
 
 No one can do that, not even government agencies.  There is something else
going on.  Perhaps there is another WiFi network open.    You can set up
most routers to only "talk" to a white list of physical devices.  Then he
does not even see your network.    There is no way to guess a WEP password
so quickly so he must be doing something else.  
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Re: [Emc-users] Mini-PC

[Gregg Eshelman via Emc-users]

You'd have to set it as an allowed list rather than a blocked list. Block one 
MAC and he'd likely run a MAC spoofer on his phone. Set up DD-WRT with a MAC 
whitelist that contains only your stuff and set all admin functions to wired 
only and that will keep him out. Even if he hacks your WiFi password that's all 
he'll be able to do. 
This was added back in V24 circa 2007 In V24 you will find this on the Wireless 
-> Advanced TabWireless GUI Access - Disable

On Sunday, September 13, 2020, 11:23:54 AM MDT, Gene Heskett 
 wrote: 
> Block his mac addresses?

I haven't tried that. But I'd wager whatever pathfinding app he has 
installed on his phone, is likely able to spoof a different MAC too.Its 
an idea worth checking though, thanks.

  
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Re: [Emc-users] Mini-PC

[Gregg Eshelman via Emc-users]

Set your router to only allow connections from the MAC addresses of your 
equipment.
Some other WPA PSK2 issues to have a look at. 
https://techbeacon.com/security/wpa2-hack-allows-wi-fi-password-crack-much-faster
 
Check to see if DD-WRT has added anything new against hashcat and pixie dust 
attacks.

On Sunday, September 13, 2020, 10:44:37 AM MDT, Gene Heskett 
 wrote:  
 
 On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:

> You could prevent this by not using "password" or "123" as your
> network password.
>
Aww, come on guy, even I know better than that, I can change the wpsk2 pw 
to any random 26+ char phrase, and his phone can hack it in 30 seconds 
or less.  I've played whack a mole with him several times, but I always 
wind up just turning the radio off.  Using dd-wrt, and all hardwired, no 
one I didn't give the credentials to has gotten in, in nearly 16 years 
now.  There are 2 ways I can route the wifi, to me, or to the network, 
so I don't enable the "to me". I have it set, when its on, to allow 
network access over a wifi path, but not to me.

> I don't enable the wifi. I have a neighbor that will use 100gb a month
>
> > using my bandwidth instead of his with his smartphone.  So all my
> > networking is hard wired.  
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Re: [Emc-users] Mini-PC

[Chris Albertson]

No one can do that, not even government agencies.  There is something else
going on.  Perhaps there is another WiFi network open. You can set up
most routers to only "talk" to a white list of physical devices.   Then he
does not even see your network. There is no way to guess a WEP password
so quickly so he must be doing something else.

On Sun, Sep 13, 2020 at 9:44 AM Gene Heskett  wrote:

> On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:
>
> > You could prevent this by not using "password" or "123" as your
> > network password.
> >
> Aww, come on guy, even I know better than that, I can change the wpsk2 pw
> to any random 26+ char phrase, and his phone can hack it in 30 seconds
> or less.  I've played whack a mole with him several times, but I always
> wind up just turning the radio off.  Using dd-wrt, and all hardwired, no
> one I didn't give the credentials to has gotten in, in nearly 16 years
> now.  There are 2 ways I can route the wifi, to me, or to the network,
> so I don't enable the "to me". I have it set, when its on, to allow
> network access over a wifi path, but not to me.
>
> > I don't enable the wifi. I have a neighbor that will use 100gb a month
> >
> > > using my bandwidth instead of his with his smartphone.  So all my
> > > networking is hard wired.
>
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page 
>
>
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>


-- 

Chris Albertson
Redondo Beach, California

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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Sunday 13 September 2020 17:53:49 Thaddeus Waldner wrote:

> He might be reading your password in the same way as you are setting
> it, namely by logging into the router. Did you change default router
> admin password?
>
Not recently. But external logins can't get admin rights on dd-wrt 
anyway, I have that locked down.  The only allowed admin is from this 
machine.

> > On Sep 13, 2020, at 11:44 AM, Gene Heskett 
> > wrote:
> >
> > On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:
> >> You could prevent this by not using "password" or "123" as your
> >> network password.
> >
> > Aww, come on guy, even I know better than that, I can change the
> > wpsk2 pw to any random 26+ char phrase, and his phone can hack it in
> > 30 seconds or less.  I've played whack a mole with him several
> > times, but I always wind up just turning the radio off.  Using
> > dd-wrt, and all hardwired, no one I didn't give the credentials to
> > has gotten in, in nearly 16 years now.  There are 2 ways I can route
> > the wifi, to me, or to the network, so I don't enable the "to me". I
> > have it set, when its on, to allow network access over a wifi path,
> > but not to me.
> >
> >> I don't enable the wifi. I have a neighbor that will use 100gb a
> >> month
> >>
> >>> using my bandwidth instead of his with his smartphone.  So all my
> >>> networking is hard wired.
> >
> > Cheers, Gene Heskett
> > --
> > "There are four boxes to be used in defense of liberty:
> > soap, ballot, jury, and ammo. Please use in that order."
> > -Ed Howdershelt (Author)
> > If we desire respect for the law, we must first make the law
> > respectable. - Louis D. Brandeis
> > Genes Web page 
> >
> >
> > ___
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Mini-PC

[Thaddeus Waldner]

He might be reading your password in the same way as you are setting it, namely 
by logging into the router. Did you change default router admin password?

> On Sep 13, 2020, at 11:44 AM, Gene Heskett  wrote:
> 
> On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:
> 
>> You could prevent this by not using "password" or "123" as your
>> network password.
>> 
> Aww, come on guy, even I know better than that, I can change the wpsk2 pw 
> to any random 26+ char phrase, and his phone can hack it in 30 seconds 
> or less.  I've played whack a mole with him several times, but I always 
> wind up just turning the radio off.  Using dd-wrt, and all hardwired, no 
> one I didn't give the credentials to has gotten in, in nearly 16 years 
> now.  There are 2 ways I can route the wifi, to me, or to the network, 
> so I don't enable the "to me". I have it set, when its on, to allow 
> network access over a wifi path, but not to me.
> 
>> I don't enable the wifi. I have a neighbor that will use 100gb a month
>> 
>>> using my bandwidth instead of his with his smartphone.  So all my
>>> networking is hard wired.
> 
> 
> Cheers, Gene Heskett
> -- 
> "There are four boxes to be used in defense of liberty:
> soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
> - Louis D. Brandeis
> Genes Web page 
> 
> 
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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Sunday 13 September 2020 13:09:01 Eric Keller wrote:

> Can't dd-wrt only allow authorized mac addresses?  And disallow
> administration via wifi?
> We couldn't live without wifi in our house, I should probably lock it
> down a little better though.

I find that once the cable is run and plugged in, I don't miss it a 
bit. :)

> Eric Keller
> Boalsburg, Pennsylvania
>
> On Sun, Sep 13, 2020 at 12:44 PM Gene Heskett  
wrote:
> > On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:
> > > You could prevent this by not using "password" or "123" as your
> > > network password.
> >
> > Aww, come on guy, even I know better than that, I can change the
> > wpsk2 pw to any random 26+ char phrase, and his phone can hack it in
> > 30 seconds or less.  I've played whack a mole with him several
> > times, but I always wind up just turning the radio off.  Using
> > dd-wrt, and all hardwired, no one I didn't give the credentials to
> > has gotten in, in nearly 16 years now.  There are 2 ways I can route
> > the wifi, to me, or to the network, so I don't enable the "to me". I
> > have it set, when its on, to allow network access over a wifi path,
> > but not to me.
> >
> > > I don't enable the wifi. I have a neighbor that will use 100gb a
> > > month
> > >
> > > > using my bandwidth instead of his with his smartphone.  So all
> > > > my networking is hard wired.
> >
> > Cheers, Gene Heskett
> > --
> > "There are four boxes to be used in defense of liberty:
> >  soap, ballot, jury, and ammo. Please use in that order."
> > -Ed Howdershelt (Author)
> > If we desire respect for the law, we must first make the law
> > respectable. - Louis D. Brandeis
> > Genes Web page 
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
> ___
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Sunday 13 September 2020 13:05:22 Dave Matthews wrote:

> On Sun, Sep 13, 2020 at 12:44 PM Gene Heskett  
wrote:
> > On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:
> > > You could prevent this by not using "password" or "123" as your
> > > network password.
> >
> > Aww, come on guy, even I know better than that, I can change the
> > wpsk2 pw to any random 26+ char phrase, and his phone can hack it in
> > 30 seconds or less.  I've played whack a mole with him several
> > times, but I always wind up just turning the radio off.  Using
> > dd-wrt, and all hardwired, no one I didn't give the credentials to
> > has gotten in, in nearly 16 years now.  There are 2 ways I can route
> > the wifi, to me, or to the network, so I don't enable the "to me". I
> > have it set, when its on, to allow network access over a wifi path,
> > but not to me.
> >
> > > I don't enable the wifi. I have a neighbor that will use 100gb a
> > > month
> > >
> > > > using my bandwidth instead of his with his smartphone.  So all
> > > > my networking is hard wired.
>
> Block his mac addresses?

I haven't tried that. But I'd wager whatever pathfinding app he has 
installed on his phone, is likely able to spoof a different MAC too.Its 
an idea worth checking though, thanks.
> Dave
>
>
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Mini-PC

[Eric Keller]

Can't dd-wrt only allow authorized mac addresses?  And disallow
administration via wifi?
We couldn't live without wifi in our house, I should probably lock it down
a little better though.
Eric Keller
Boalsburg, Pennsylvania


On Sun, Sep 13, 2020 at 12:44 PM Gene Heskett  wrote:

> On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:
>
> > You could prevent this by not using "password" or "123" as your
> > network password.
> >
> Aww, come on guy, even I know better than that, I can change the wpsk2 pw
> to any random 26+ char phrase, and his phone can hack it in 30 seconds
> or less.  I've played whack a mole with him several times, but I always
> wind up just turning the radio off.  Using dd-wrt, and all hardwired, no
> one I didn't give the credentials to has gotten in, in nearly 16 years
> now.  There are 2 ways I can route the wifi, to me, or to the network,
> so I don't enable the "to me". I have it set, when its on, to allow
> network access over a wifi path, but not to me.
>
> > I don't enable the wifi. I have a neighbor that will use 100gb a month
> >
> > > using my bandwidth instead of his with his smartphone.  So all my
> > > networking is hard wired.
>
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page 
>
>
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> https://lists.sourceforge.net/lists/listinfo/emc-users
>

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Re: [Emc-users] Mini-PC

[Dave Matthews]

On Sun, Sep 13, 2020 at 12:44 PM Gene Heskett  wrote:
>
> On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:
>
> > You could prevent this by not using "password" or "123" as your
> > network password.
> >
> Aww, come on guy, even I know better than that, I can change the wpsk2 pw
> to any random 26+ char phrase, and his phone can hack it in 30 seconds
> or less.  I've played whack a mole with him several times, but I always
> wind up just turning the radio off.  Using dd-wrt, and all hardwired, no
> one I didn't give the credentials to has gotten in, in nearly 16 years
> now.  There are 2 ways I can route the wifi, to me, or to the network,
> so I don't enable the "to me". I have it set, when its on, to allow
> network access over a wifi path, but not to me.
>
> > I don't enable the wifi. I have a neighbor that will use 100gb a month
> >
> > > using my bandwidth instead of his with his smartphone.  So all my
> > > networking is hard wired.
>

Block his mac addresses?

Dave


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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Sunday 13 September 2020 05:18:16 Chris Albertson wrote:

> You could prevent this by not using "password" or "123" as your
> network password.
>
Aww, come on guy, even I know better than that, I can change the wpsk2 pw 
to any random 26+ char phrase, and his phone can hack it in 30 seconds 
or less.  I've played whack a mole with him several times, but I always 
wind up just turning the radio off.  Using dd-wrt, and all hardwired, no 
one I didn't give the credentials to has gotten in, in nearly 16 years 
now.  There are 2 ways I can route the wifi, to me, or to the network, 
so I don't enable the "to me". I have it set, when its on, to allow 
network access over a wifi path, but not to me.

> I don't enable the wifi. I have a neighbor that will use 100gb a month
>
> > using my bandwidth instead of his with his smartphone.  So all my
> > networking is hard wired.


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Mini-PC

[John Dammeyer]

> From: Sam Sokolik [mailto:samco...@gmail.com]
> 
> I have been running the pi for a while now.  (not in production - but every
> time I use it - no realtime issues)  Fix your power supply problem.

Yes.  As I recall it's mounted to the back of your monitor.  I'll look into the 
power supply today.  Since this was a temporary test it's on a wall wart USB 
supply (2A) with a 5' USB C cable.  And I'm using 3 of the USB ports for the 
VGA converter and mouse/keyboard.

So I'll see if I can dig out a powered hub to unload that 5V and change to a 
short USB C cable and run an AC extension cord to the wall wart. 

> 
> I don't know what the stock image has - but I added a few things to the
> config.txt and cmdline.txt.

It's the newest and latest 2.8.0.  There were two in the zip file which was a 
bit puzzling.

> 
> (do some research about this - If you care - over_voltage might void your
> warranty..
If anything it's low voltage.
https://www.raspberrypi.org/documentation/hardware/raspberrypi/power/README.md

I forget if yours is an HDMI monitor?  Mine isn't so I don't know what exactly 
the changes below will do:

From:  https://www.raspberrypi.org/forums/viewtopic.php?t=247893
"KMS and DRM rely almost exclusively on the EDID of the display,"
 
I'm not sure the Pi4 should have some of this set without fan cooling nor 
should it be needed for the new 2.8.0 kernel?
https://www.raspberrypi.org/documentation/configuration/config-txt/overclocking.md

> config.txt
> forceturbo=1
> [pi4]
> # Enable DRM VC4 V3D driver on top of the dispmanx display stack
> dtoverlay=vc4-fkms-v3d
> max_framebuffers=2
> gpu_freq=600
> over_voltage=6
> arm_freq=1800
> 

AFAIK this document is now  out of date for the 2.8.0
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?The_Isolcpus_Boot_Parameter_And_GRUB2
so I don't know if these would make a difference anymore.  The Pi4 version 
already reports on boot that processor one isn't used.  Which I still think is 
weird...

> cmdline.txt
> I add to the kernel line
> idle=poll isolcpus=1,2,3
> 
One step at a time.  Power supply and measuring the voltage is the first step.  
Especially since I own a 6.5digit meter.

Thanks for the feedback.
John Dammeyer

> 
> 
> 
> 



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Re: [Emc-users] Mini-PC

[Thaddeus Waldner]

*AND* by not using the default WiFi router password.

> On Sep 13, 2020, at 9:10 AM, cogoman via Emc-users 
>  wrote:
> 
> I recommend the techniques in this web page:
> 
> 
> https://www.grc.com/haystack.htm
> 
> 
> I enjoy pointing out the smarts of Steve Gibson.
> 
> 
> I've set up an Epson ET-2650 printer as a WIFI access point, and since the 
> interface for entering the password is so awful, I created a password 
> specifically meant to be easy to enter on that printer.  It is still over 16 
> characters long, and has something from caps, lower case, numbers and special 
> characters.  That should keep lurkers from wasting our paper with nonsense.
> 
>> On 9/13/20 5:18 AM, Chris Albertson wrote:
>> You could prevent this by not using "password" or "123" as your network
>> password.
>> 
>> I don't enable the wifi. I have a neighbor that will use 100gb a month
>>> using my bandwidth instead of his with his smartphone.  So all my
>>> networking is hard wired.
>>> 
> 
> 
> 
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Re: [Emc-users] Mini-PC

[cogoman via Emc-users]

I recommend the techniques in this web page:


https://www.grc.com/haystack.htm


I enjoy pointing out the smarts of Steve Gibson.


I've set up an Epson ET-2650 printer as a WIFI access point, and since 
the interface for entering the password is so awful, I created a 
password specifically meant to be easy to enter on that printer.  It is 
still over 16 characters long, and has something from caps, lower case, 
numbers and special characters.  That should keep lurkers from wasting 
our paper with nonsense.


On 9/13/20 5:18 AM, Chris Albertson wrote:

You could prevent this by not using "password" or "123" as your network
password.

I don't enable the wifi. I have a neighbor that will use 100gb a month

using my bandwidth instead of his with his smartphone.  So all my
networking is hard wired.





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Re: [Emc-users] Mini-PC

[Sam Sokolik]

I have been running the pi for a while now.  (not in production - but every
time I use it - no realtime issues)  Fix your power supply problem.

I don't know what the stock image has - but I added a few things to the
config.txt and cmdline.txt.

(do some research about this - If you care - over_voltage might void your
warranty..
config.txt
forceturbo=1
[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
dtoverlay=vc4-fkms-v3d
max_framebuffers=2
gpu_freq=600
over_voltage=6
arm_freq=1800

cmdline.txt
I add to the kernel line
idle=poll isolcpus=1,2,3







On Sun, Sep 13, 2020 at 4:21 AM Chris Albertson 
wrote:

> You could prevent this by not using "password" or "123" as your network
> password.
>
> I don't enable the wifi. I have a neighbor that will use 100gb a month
> > using my bandwidth instead of his with his smartphone.  So all my
> > networking is hard wired.
> >
> --
>
> Chris Albertson
> Redondo Beach, California
>
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Re: [Emc-users] Mini-PC

[Chris Albertson]

You could prevent this by not using "password" or "123" as your network
password.

I don't enable the wifi. I have a neighbor that will use 100gb a month
> using my bandwidth instead of his with his smartphone.  So all my
> networking is hard wired.
>
-- 

Chris Albertson
Redondo Beach, California

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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Sunday 13 September 2020 01:54:26 John Dammeyer wrote:

> > -Origin
> > I am running a 1 ms servo-thread and a 5ms jog-thread and moved all
> > the non time critical stuff to that slower thread. Stuff to service
> > the twin jog dials etc is in the slower loop.  I did that to make
> > life easier on the pi3, and its worked so well I haven't undone it
> > since putting a pi4 in a year ago. I am not using an ethernet card,
> > but the 7i90HF rpspi driven interface. My ethernet is used for more
> > normal stuff like keeping it updated.
> > Cheers, Gene Heskett
>
> The hardwire Ethernet on 192.168.1.xx to the 7i92H with 192.168.1.121
> to match my PC based system while also having the WiFi on 192.168.0.97
> was the hard part.  The Pi OS did not want to allow two separate
> groups.  I ended up cleaning the MicroSD card and starting over.  And
> then changed the order I did things.  And I forgot to make notes so I
> don't remember exactly what I did.
>
> But now it reliably boots up the newly released 2.8.0 and I can browse
> through the folders and download gcode files from my PC.  Screen shot
> attached.  I just drag and drop.  No command line needed.
>
> John Dammeyer

I don't enable the wifi. I have a neighbor that will use 100gb a month 
using my bandwidth instead of his with his smartphone.  So all my 
networking is hard wired.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Saturday 12 September 2020 22:38:06 Peter C. Wallace wrote:

> On Sat, 12 Sep 2020, John Dammeyer wrote:
> > Date: Sat, 12 Sep 2020 19:13:43 -0700
> > From: John Dammeyer 
> > Reply-To: "Enhanced Machine Controller (EMC)"
> > 
> > To: "'Enhanced Machine Controller (EMC)'"
> >  Subject: Re: [Emc-users] Mini-PC
> >
> > Mini USB cable arrived via Amazon today so I could power the HDMI to
> > VGA dongle. After that it was quick work to move cables from the PC
> > and monitor to the Pi4. cid:image002.jpg@01D68936.9A816960 USB uses
> > mouse, keyboard and power for the dongle.  A 5V,2A wall wort for the
> > Pi4.  The Ethernet cable goes to the to the Mesa 7i92H down in the
> > cabinet and it's powered from the system power supply.
> >
> > I had loaded the new LinuxCNC Pi distribution a couple of times a
> > few days ago.  Second time lucky and it finally worked with the
> > 7i92H.  I had also moved over the HAL and INI files from my PC
> > version LinuxCNC.
> >
> > Deep breath.  Switch on Master Power.  Wait for it to boot and then
> > click on the desktop icon for the mill.  Why is it that these short
> > cuts throw up that stupid dialog asking if I want to run it directly
> > or in a terminal window. Why isn't there checkbox that says yes
> > always?
> >
> > Anyway.  LinuxCNC booted.  I clicked on the ON button.  Tried the
> > spindle. Worked.  Homed everything.  That worked.  Then suddenly it
> > complains that the task with 100 is too slow and it will only
> > tell me that once.
> >
> > Ran a few G-Code samples.  Ethernet connection reported once that a
> > read to the 7i92H had failed.  Had to stop and restart LinuxCNC
> > since that also took out the master relay.  No reboot needed though.
> >
> > Ran some more G-Code.  Tried the G01 G93 X1 A60 F0.707.  Worked
> > fine.
> >
> > So other than latency warnings and unreliable Ethernet
> > communications it could be used to run the mill.  But I wouldn't
> > trust it.
> >
> > Now this could be a power supply or grounding issue.  I think
> > mounting the Pi in a proper metal box, adding a heatsink or even a
> > fan and using a power supply with more than 2A capability would go a
> > long way to getting rid of spurious issues.  It's even possible that
> > the latency issue is due to the translation to VGA from HDMI but I
> > always thought that the latency issue was not a problem with
> > Ethernet based Mesa boards.
> >
> > cid:image006.jpg@01D68936.9A816960
> >
> > John Dammeyer
>
> Latency is less of an issue since LinuxCNC is not doing very high
> speed things, but you still to run the servo thread reliably.
>
> The read error means that a read request timed out 5 times in a row
> (default timeout is 80% of the servo thread period)
>
> You might try 2 ms servo thread. Others have needed that on a
> RPI4

I am running a 1 ms servo-thread and a 5ms jog-thread and moved all the 
non time critical stuff to that slower thread. Stuff to service the twin 
jog dials etc is in the slower loop.  I did that to make life easier on 
the pi3, and its worked so well I haven't undone it since putting a pi4 
in a year ago. I am not using an ethernet card, but the 7i90HF rpspi 
driven interface. My ethernet is used for more normal stuff like keeping 
it updated.
>
> Peter Wallace
> Mesa Electronics
>
>
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>


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Re: [Emc-users] Mini-PC

[John Dammeyer]

Thanks Peter, 
> From: Peter C. Wallace [mailto:p...@mesanet.com]
> On Sat, 12 Sep 2020, John Dammeyer wrote:
> 
> > From: John Dammeyer 
> > Mini USB cable arrived via Amazon today so I could power the HDMI to VGA
> > dongle. After that it was quick work to move cables from the PC and monitor 
> > to
> > the Pi4.  USB uses mouse, keyboard and power
> > for the dongle.  A 5V,2A wall wort for the Pi4.  The Ethernet cable goes to
> > the to the Mesa 7i92H down in the cabinet and it's powered from the system
> > power supply.
> >
> > I had loaded the new LinuxCNC Pi distribution a couple of times a few days
> > ago.  Second time lucky and it finally worked with the 7i92H.  I had also
> > moved over the HAL and INI files from my PC version LinuxCNC.
> >
> > Deep breath.  Switch on Master Power.  Wait for it to boot and then click on
> > the desktop icon for the mill.  Why is it that these short cuts throw up 
> > that
> > stupid dialog asking if I want to run it directly or in a terminal window.
> > Why isn't there checkbox that says yes always?
> >
> > Anyway.  LinuxCNC booted.  I clicked on the ON button.  Tried the spindle.
> > Worked.  Homed everything.  That worked.  Then suddenly it complains that 
> > the
> > task with 100 is too slow and it will only tell me that once.
> >
> > Ran a few G-Code samples.  Ethernet connection reported once that a read to
> > the 7i92H had failed.  Had to stop and restart LinuxCNC since that also took
> > out the master relay.  No reboot needed though.
> >
> > Ran some more G-Code.  Tried the G01 G93 X1 A60 F0.707.  Worked fine.
> >
> > So other than latency warnings and unreliable Ethernet communications it 
> > could
> > be used to run the mill.  But I wouldn't trust it.
> >
> > Now this could be a power supply or grounding issue.  I think mounting the 
> > Pi
> > in a proper metal box, adding a heatsink or even a fan and using a power
> > supply with more than 2A capability would go a long way to getting rid of
> > spurious issues.  It's even possible that the latency issue is due to the
> > translation to VGA from HDMI but I always thought that the latency issue was
> > not a problem with Ethernet based Mesa boards.
> > John Dammeyer
> >
> 
> 
> 
> Latency is less of an issue since LinuxCNC is not doing very high
> speed things, but you still to run the servo thread reliably.
> 
> The read error means that a read request timed out 5 times in a row
> (default timeout is 80% of the servo thread period)
> 
> You might try 2 ms servo thread. Others have needed that on a
> RPI4
> 
> 
> Peter Wallace
> Mesa Electronics

I've also been told that if I see a yellow lightning bolt during boot that the 
power supply is operating on the edge.  And that Pi4's do much better with a 
3.5A supply.  It's been suggested that I use 12V into a 3A to 4A switching and 
wire directly to the 5V bus pins rather than go through the power connector.  

I'm suspecting, but it's not been confirmed, that if the Pi4 thinks the power 
is marginal that it throttles way back in performance to lower power usage.  
And that could certainly cause latency issues.  

I think that's the first place to look.  

John




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Re: [Emc-users] Mini-PC

[Peter C. Wallace]

On Sat, 12 Sep 2020, John Dammeyer wrote:


Date: Sat, 12 Sep 2020 19:13:43 -0700
From: John Dammeyer 
Reply-To: "Enhanced Machine Controller (EMC)"

To: "'Enhanced Machine Controller (EMC)'" 
Subject: Re: [Emc-users] Mini-PC

Mini USB cable arrived via Amazon today so I could power the HDMI to VGA 
dongle. After that it was quick work to move cables from the PC and monitor to 
the Pi4. cid:image002.jpg@01D68936.9A816960 USB uses mouse, keyboard and power 
for the dongle.  A 5V,2A wall wort for the Pi4.  The Ethernet cable goes to 
the to the Mesa 7i92H down in the cabinet and it's powered from the system 
power supply.


I had loaded the new LinuxCNC Pi distribution a couple of times a few days 
ago.  Second time lucky and it finally worked with the 7i92H.  I had also 
moved over the HAL and INI files from my PC version LinuxCNC.


Deep breath.  Switch on Master Power.  Wait for it to boot and then click on 
the desktop icon for the mill.  Why is it that these short cuts throw up that 
stupid dialog asking if I want to run it directly or in a terminal window. 
Why isn't there checkbox that says yes always?


Anyway.  LinuxCNC booted.  I clicked on the ON button.  Tried the spindle. 
Worked.  Homed everything.  That worked.  Then suddenly it complains that the 
task with 100 is too slow and it will only tell me that once.


Ran a few G-Code samples.  Ethernet connection reported once that a read to 
the 7i92H had failed.  Had to stop and restart LinuxCNC since that also took 
out the master relay.  No reboot needed though.


Ran some more G-Code.  Tried the G01 G93 X1 A60 F0.707.  Worked fine.

So other than latency warnings and unreliable Ethernet communications it could 
be used to run the mill.  But I wouldn't trust it.


Now this could be a power supply or grounding issue.  I think mounting the Pi 
in a proper metal box, adding a heatsink or even a fan and using a power 
supply with more than 2A capability would go a long way to getting rid of 
spurious issues.  It's even possible that the latency issue is due to the 
translation to VGA from HDMI but I always thought that the latency issue was 
not a problem with Ethernet based Mesa boards.


cid:image006.jpg@01D68936.9A816960

John Dammeyer





Latency is less of an issue since LinuxCNC is not doing very high
speed things, but you still to run the servo thread reliably.

The read error means that a read request timed out 5 times in a row
(default timeout is 80% of the servo thread period)

You might try 2 ms servo thread. Others have needed that on a 
RPI4



Peter Wallace
Mesa Electronics


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Re: [Emc-users] Mini-PC

[John Dammeyer]

Mini USB cable arrived via Amazon today so I could power the HDMI to VGA 
dongle.  
After that it was quick work to move cables from the PC and monitor to the Pi4.
cid:image002.jpg@01D68936.9A816960
USB uses mouse, keyboard and power for the dongle.  A 5V,2A wall wort for the 
Pi4.  The Ethernet cable goes to the to the Mesa 7i92H down in the cabinet and 
it's powered from the system power supply.
 
I had loaded the new LinuxCNC Pi distribution a couple of times a few days ago. 
  Second time lucky and it finally worked with the 7i92H.  I had also moved 
over the HAL and INI files from my PC version LinuxCNC.
 
Deep breath.  Switch on Master Power.  Wait for it to boot and then click on 
the desktop icon for the mill.  Why is it that these short cuts throw up that 
stupid dialog asking if I want to run it directly or in a terminal window.  Why 
isn't there checkbox that says yes always?
 
Anyway.  LinuxCNC booted.  I clicked on the ON button.  Tried the spindle.  
Worked.  Homed everything.  That worked.  Then suddenly it complains that the 
task with 100 is too slow and it will only tell me that once.
 
Ran a few G-Code samples.  Ethernet connection reported once that a read to the 
7i92H had failed.   Had to stop and restart LinuxCNC since that also took out 
the master relay.  No reboot needed though.  
 
Ran some more G-Code.   Tried the G01 G93 X1 A60 F0.707.  Worked fine.
 
So other than latency warnings and unreliable Ethernet communications it could 
be used to run the mill.  But I wouldn't trust it. 
 
Now this could be a power supply or grounding issue.  I think mounting the Pi 
in a proper metal box, adding a heatsink or even a fan and using a power supply 
with more than 2A capability would go a long way to getting rid of spurious 
issues.   It's even possible that the latency issue is due to the translation 
to VGA from HDMI but I always thought that the latency issue was not a problem 
with Ethernet based Mesa boards.
 
cid:image006.jpg@01D68936.9A816960
 
John Dammeyer
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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Friday 11 September 2020 16:34:19 Sam Sokolik wrote:

> that is weird...
>
> http://electronicsam.com/images/greenmachine/user-10Sep2020-76094.png
>
That is sweet, and whats the board its running on?  I'll buy one tomorrow 
to replace the elderly Dell power hog I'm useing on the GO704, if it can 
take a 5i25. I have a 7i76 on one port and a std bob on the other.

> On Fri, Sep 11, 2020 at 3:00 PM Gene Heskett  
wrote:
> > On Friday 11 September 2020 14:28:12 Sam Sokolik wrote:
> > > same computer running isolcpus=3 and idle=poll.  (about a dayish)
> >
> > Where is the link? Sam.
> >
> > > On Fri, Sep 11, 2020 at 12:37 PM Jon Elson
> > > 
> >
> > wrote:
> > > > On 09/11/2020 10:40 AM, Eric Keller wrote:
> > > > > On Thu, Sep 10, 2020 at 7:49 PM Gene Heskett
> > > > > 
> > > >
> > > > wrote:
> > > > >> On Thursday 10 September 2020 18:32:41 Eric Keller wrote:
> > > > >>> Gene, do you have pictures of your sheldon?
> > > > >>
> > > > >> Yes, I've posted some to the list so they s/b in the archive.
> > > > >> Yell if
> > > >
> > > > you
> > > >
> > > > >> can't find them.
> > > > >>
> > > > >> There are over 25000 hits on the archive for  "Gene Sheldon"
> > > > >> so if you
> > > > >
> > > > > have some direct links I would greatly appreciate it.
> > > >
> > > > There is also a Sheldon lathe group on groups.io, and one of
> > > > the members, John Knox, is from the family that owned
> > > > Sheldon, and worked in the factory fro many years.  He has
> > > > many unique documents and knows where to find standard
> > > > replacement parts (seals, bearings, shafts, etc.)
> > > >
> > > > Jon
> > > >
> > > >
> > > > ___
> > > > Emc-users mailing list
> > > > Emc-users@lists.sourceforge.net
> > > > https://lists.sourceforge.net/lists/listinfo/emc-users
> > >
> > > ___
> > > Emc-users mailing list
> > > Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> > Cheers, Gene Heskett
> > --
> > "There are four boxes to be used in defense of liberty:
> >  soap, ballot, jury, and ammo. Please use in that order."
> > -Ed Howdershelt (Author)
> > If we desire respect for the law, we must first make the law
> > respectable. - Louis D. Brandeis
> > Genes Web page 
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
> ___
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Mini-PC

[Sam Sokolik]

that is weird...

http://electronicsam.com/images/greenmachine/user-10Sep2020-76094.png


On Fri, Sep 11, 2020 at 3:00 PM Gene Heskett  wrote:

> On Friday 11 September 2020 14:28:12 Sam Sokolik wrote:
>
> > same computer running isolcpus=3 and idle=poll.  (about a dayish)
> >
> Where is the link? Sam.
>
> > On Fri, Sep 11, 2020 at 12:37 PM Jon Elson 
> wrote:
> > > On 09/11/2020 10:40 AM, Eric Keller wrote:
> > > > On Thu, Sep 10, 2020 at 7:49 PM Gene Heskett
> > > > 
> > >
> > > wrote:
> > > >> On Thursday 10 September 2020 18:32:41 Eric Keller wrote:
> > > >>> Gene, do you have pictures of your sheldon?
> > > >>
> > > >> Yes, I've posted some to the list so they s/b in the archive.
> > > >> Yell if
> > >
> > > you
> > >
> > > >> can't find them.
> > > >>
> > > >> There are over 25000 hits on the archive for  "Gene Sheldon" so
> > > >> if you
> > > >
> > > > have some direct links I would greatly appreciate it.
> > >
> > > There is also a Sheldon lathe group on groups.io, and one of
> > > the members, John Knox, is from the family that owned
> > > Sheldon, and worked in the factory fro many years.  He has
> > > many unique documents and knows where to find standard
> > > replacement parts (seals, bearings, shafts, etc.)
> > >
> > > Jon
> > >
> > >
> > > ___
> > > Emc-users mailing list
> > > Emc-users@lists.sourceforge.net
> > > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page 
>
>
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
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>

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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Friday 11 September 2020 14:28:12 Sam Sokolik wrote:

> same computer running isolcpus=3 and idle=poll.  (about a dayish)
>
Where is the link? Sam.

> On Fri, Sep 11, 2020 at 12:37 PM Jon Elson  
wrote:
> > On 09/11/2020 10:40 AM, Eric Keller wrote:
> > > On Thu, Sep 10, 2020 at 7:49 PM Gene Heskett
> > > 
> >
> > wrote:
> > >> On Thursday 10 September 2020 18:32:41 Eric Keller wrote:
> > >>> Gene, do you have pictures of your sheldon?
> > >>
> > >> Yes, I've posted some to the list so they s/b in the archive.
> > >> Yell if
> >
> > you
> >
> > >> can't find them.
> > >>
> > >> There are over 25000 hits on the archive for  "Gene Sheldon" so
> > >> if you
> > >
> > > have some direct links I would greatly appreciate it.
> >
> > There is also a Sheldon lathe group on groups.io, and one of
> > the members, John Knox, is from the family that owned
> > Sheldon, and worked in the factory fro many years.  He has
> > many unique documents and knows where to find standard
> > replacement parts (seals, bearings, shafts, etc.)
> >
> > Jon
> >
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
> ___
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Mini-PC

[Sam Sokolik]

same computer running isolcpus=3 and idle=poll.  (about a dayish)



On Fri, Sep 11, 2020 at 12:37 PM Jon Elson  wrote:

> On 09/11/2020 10:40 AM, Eric Keller wrote:
> > On Thu, Sep 10, 2020 at 7:49 PM Gene Heskett 
> wrote:
> >
> >> On Thursday 10 September 2020 18:32:41 Eric Keller wrote:
> >>
> >>> Gene, do you have pictures of your sheldon?
> >>>
> >> Yes, I've posted some to the list so they s/b in the archive. Yell if
> you
> >> can't find them.
> >>
> >> There are over 25000 hits on the archive for  "Gene Sheldon" so if you
> > have some direct links I would greatly appreciate it.
> >
> There is also a Sheldon lathe group on groups.io, and one of
> the members, John Knox, is from the family that owned
> Sheldon, and worked in the factory fro many years.  He has
> many unique documents and knows where to find standard
> replacement parts (seals, bearings, shafts, etc.)
>
> Jon
>
>
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Re: [Emc-users] Mini-PC

[Jon Elson]

On 09/11/2020 10:40 AM, Eric Keller wrote:

On Thu, Sep 10, 2020 at 7:49 PM Gene Heskett  wrote:


On Thursday 10 September 2020 18:32:41 Eric Keller wrote:


Gene, do you have pictures of your sheldon?


Yes, I've posted some to the list so they s/b in the archive. Yell if you
can't find them.

There are over 25000 hits on the archive for  "Gene Sheldon" so if you

have some direct links I would greatly appreciate it.

There is also a Sheldon lathe group on groups.io, and one of 
the members, John Knox, is from the family that owned 
Sheldon, and worked in the factory fro many years.  He has 
many unique documents and knows where to find standard 
replacement parts (seals, bearings, shafts, etc.)


Jon


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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Friday 11 September 2020 11:40:01 Eric Keller wrote:

> On Thu, Sep 10, 2020 at 7:49 PM Gene Heskett  
wrote:
> > On Thursday 10 September 2020 18:32:41 Eric Keller wrote:
> > > Gene, do you have pictures of your sheldon?
> >
> > Yes, I've posted some to the list so they s/b in the archive. Yell
> > if you can't find them.
> >
> > There are over 25000 hits on the archive for  "Gene Sheldon" so if
> > you
>
> have some direct links I would greatly appreciate it.
> Thanks,
> Eric

I don't get along with html on a "first name" basis, but I should be able 
to cobble up some softlinks in the next day or so and make them visible 
on my web page in the signature. Its only a 10 megabaud connection so 
won't be very speedy. I'll post when its done. 
>
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Mini-PC

[Eric Keller]

On Thu, Sep 10, 2020 at 7:49 PM Gene Heskett  wrote:

> On Thursday 10 September 2020 18:32:41 Eric Keller wrote:
>
> > Gene, do you have pictures of your sheldon?
> >
> Yes, I've posted some to the list so they s/b in the archive. Yell if you
> can't find them.
>
> There are over 25000 hits on the archive for  "Gene Sheldon" so if you
have some direct links I would greatly appreciate it.
Thanks,
Eric

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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Thursday 10 September 2020 18:32:41 Eric Keller wrote:

> Gene, do you have pictures of your sheldon?
>
Yes, I've posted some to the list so they s/b in the archive. Yell if you 
can't find them.

There has been a couple changes since, the rpi3 is now an rpi4, and a 
honking big z-motor that was a 1600oz/in nema 34, is now a 3NM nema 23, 
one of the new 3 phase stepper servo's.  It has an error output, which 
if triggered, e-stops the whole thing and unhomes it.  And just today I 
got 2 more of those motor/driver combo's but in the shorter 2NM size 
which can fit on the back of the apron plate so I can put one of them on 
the X drive.  But not instantly as I need to either ream that motor 
pulley out to 8mm or order one, as that one is 1/4".  And I'm up to my 
grin trying to get someone interested in replaceing a 30 yo window that 
fell from broken plastic parts about 2AM 10 days back.  And I'm getting 
too darned old to handle that project alone.

> On Thu, Sep 10, 2020 at 5:30 PM Gene Heskett  
wrote:
> > On Thursday 10 September 2020 13:53:53 Scott Harwell via Emc-users 
wrote:
> > >  I'm testing on the HP8300  $115 with keyboard and mouse from
> > > Newegg. It looks good but I have two problems (probably me). No
> > > root password and power management time out.
> > >
> > > Scott
> > >
> > >
> > > On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik
> > >  wrote:
> > >
> > >  I just downloaded the buster 2.8 iso and tested it on an 8200
> > > (8300 usually runs just slightly better in my experience)
> > >
> > > This was overnight with glxgears running.

But I didn't see a performance report.

> > > On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne
> > > 
> > >
> > > wrote:
> > > > On 9/8/20 12:48 PM, Dave Matthews wrote:
> > > > > A few weeks ago someone mentioned the HP 8300 SFF as having
> > > > > very good jitter numbers.  Those are an i5 that takes a $5
> > > > > cable to add the parallel port.  Usually about $150 US on
> > > > > Amazon.
> > > > >
> > > > > $155 today -
> > > >
> > > > https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV
> > > >9G1B
> > > > O/ref=sr_1_1?dchild=1&keywords=hp+8300+sff&qid=1599583671&sr=8-1
> > > >
> > > > That's the Amazon price with Win10.  It's $81 on eBay, maybe
> > > > less for one without Windows.  Search for item number
> > > > 184439631747, or more generically, search for "HP 8300 i5
> > > > -usdt".
> > > >
> > > > I can't vouch for how well it runs LinuxCNC, but the i7 version
> > > > (eBay, off lease) has been my Linux desktop PC for the past few
> > > > years and it's on 24/7.  It's been 100% reliable and with a
> > > > solid state drive and Linux, it runs like a scalded dog.  I run
> > > > FreeCAD and it'll spin a complex model, generating shaded images
> > > > at more than twice the frame rate needed for smooth persistence
> > > > of vision video.  There's definitely something to be said for a
> > > > reliable PC to use for LinuxCNC in the shop.
> > > >
> > > > In hind sight, I probably should have gotten good used PCs that
> > > > run LinuxCNC instead of buying a bunch of Intel motherboards so
> > > > I could have standard controllers for all of my LinuxCNC
> > > > projects.  However, I was very stoked to see that LinuxCNC 2.8.0
> > > > can be installed on a Raspberry Pi 4.  That's very cool, and
> > > > would be ideal for tiny machines like a little desktop CNC
> > > > router or a Sherline mini lathe.
> >
> > Why limit it to toy's? I am running a 75 yo 11x56 Sheldon lathe with
> > an rpi4, make it do things it never dreamed of doing originally with
> > a compound and taper attachment, but without either, and much faster
> > than original after the gcode is written. No between cuts pauses to
> > check your next cut. :)
> >
> > Cheers, Gene Heskett
> > --
> > "There are four boxes to be used in defense of liberty:
> >  soap, ballot, jury, and ammo. Please use in that order."
> > -Ed Howdershelt (Author)
> > If we desire respect for the law, we must first make the law
> > respectable. - Louis D. Brandeis
> > Genes Web page 
> >

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Mini-PC

[Eric Keller]

Gene, do you have pictures of your sheldon?

On Thu, Sep 10, 2020 at 5:30 PM Gene Heskett  wrote:

> On Thursday 10 September 2020 13:53:53 Scott Harwell via Emc-users wrote:
>
> >  I'm testing on the HP8300  $115 with keyboard and mouse from Newegg.
> > It looks good but I have two problems (probably me). No root password
> > and power management time out.
> >
> > Scott
> >
> >
> > On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik
> >  wrote:
> >
> >  I just downloaded the buster 2.8 iso and tested it on an 8200 (8300
> > usually runs just slightly better in my experience)
> >
> > This was overnight with glxgears running.
> >
> >
> >
> > On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne
> > 
> >
> > wrote:
> > > On 9/8/20 12:48 PM, Dave Matthews wrote:
> > > > A few weeks ago someone mentioned the HP 8300 SFF as having very
> > > > good jitter numbers.  Those are an i5 that takes a $5 cable to add
> > > > the parallel port.  Usually about $150 US on Amazon.
> > > >
> > > > $155 today -
> > >
> > > https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1B
> > >O/ref=sr_1_1?dchild=1&keywords=hp+8300+sff&qid=1599583671&sr=8-1
> > >
> > > That's the Amazon price with Win10.  It's $81 on eBay, maybe less
> > > for one without Windows.  Search for item number 184439631747, or
> > > more generically, search for "HP 8300 i5 -usdt".
> > >
> > > I can't vouch for how well it runs LinuxCNC, but the i7 version
> > > (eBay, off lease) has been my Linux desktop PC for the past few
> > > years and it's on 24/7.  It's been 100% reliable and with a solid
> > > state drive and Linux, it runs like a scalded dog.  I run FreeCAD
> > > and it'll spin a complex model, generating shaded images at more
> > > than twice the frame rate needed for smooth persistence of vision
> > > video.  There's definitely something to be said for a reliable PC to
> > > use for LinuxCNC in the shop.
> > >
> > > In hind sight, I probably should have gotten good used PCs that run
> > > LinuxCNC instead of buying a bunch of Intel motherboards so I could
> > > have standard controllers for all of my LinuxCNC projects.  However,
> > > I was very stoked to see that LinuxCNC 2.8.0 can be installed on a
> > > Raspberry Pi 4.  That's very cool, and would be ideal for tiny
> > > machines like a little desktop CNC router or a Sherline mini lathe.
> > >
> Why limit it to toy's? I am running a 75 yo 11x56 Sheldon lathe with an
> rpi4, make it do things it never dreamed of doing originally with a
> compound and taper attachment, but without either, and much faster than
> original after the gcode is written. No between cuts pauses to check
> your next cut. :)
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page 
>
>
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Re: [Emc-users] Mini-PC

[Sam Sokolik]

And this does things that the engineers at K&T could only dream of...
Like arc radius bigger than 9."  ;)





On Thu, Sep 10, 2020 at 4:30 PM Gene Heskett  wrote:

> On Thursday 10 September 2020 13:53:53 Scott Harwell via Emc-users wrote:
>
> >  I'm testing on the HP8300  $115 with keyboard and mouse from Newegg.
> > It looks good but I have two problems (probably me). No root password
> > and power management time out.
> >
> > Scott
> >
> >
> > On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik
> >  wrote:
> >
> >  I just downloaded the buster 2.8 iso and tested it on an 8200 (8300
> > usually runs just slightly better in my experience)
> >
> > This was overnight with glxgears running.
> >
> >
> >
> > On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne
> > 
> >
> > wrote:
> > > On 9/8/20 12:48 PM, Dave Matthews wrote:
> > > > A few weeks ago someone mentioned the HP 8300 SFF as having very
> > > > good jitter numbers.  Those are an i5 that takes a $5 cable to add
> > > > the parallel port.  Usually about $150 US on Amazon.
> > > >
> > > > $155 today -
> > >
> > > https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1B
> > >O/ref=sr_1_1?dchild=1&keywords=hp+8300+sff&qid=1599583671&sr=8-1
> > >
> > > That's the Amazon price with Win10.  It's $81 on eBay, maybe less
> > > for one without Windows.  Search for item number 184439631747, or
> > > more generically, search for "HP 8300 i5 -usdt".
> > >
> > > I can't vouch for how well it runs LinuxCNC, but the i7 version
> > > (eBay, off lease) has been my Linux desktop PC for the past few
> > > years and it's on 24/7.  It's been 100% reliable and with a solid
> > > state drive and Linux, it runs like a scalded dog.  I run FreeCAD
> > > and it'll spin a complex model, generating shaded images at more
> > > than twice the frame rate needed for smooth persistence of vision
> > > video.  There's definitely something to be said for a reliable PC to
> > > use for LinuxCNC in the shop.
> > >
> > > In hind sight, I probably should have gotten good used PCs that run
> > > LinuxCNC instead of buying a bunch of Intel motherboards so I could
> > > have standard controllers for all of my LinuxCNC projects.  However,
> > > I was very stoked to see that LinuxCNC 2.8.0 can be installed on a
> > > Raspberry Pi 4.  That's very cool, and would be ideal for tiny
> > > machines like a little desktop CNC router or a Sherline mini lathe.
> > >
> Why limit it to toy's? I am running a 75 yo 11x56 Sheldon lathe with an
> rpi4, make it do things it never dreamed of doing originally with a
> compound and taper attachment, but without either, and much faster than
> original after the gcode is written. No between cuts pauses to check
> your next cut. :)
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page 
>
>
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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Thursday 10 September 2020 13:53:53 Scott Harwell via Emc-users wrote:

>  I'm testing on the HP8300  $115 with keyboard and mouse from Newegg.
> It looks good but I have two problems (probably me). No root password
> and power management time out.
>
> Scott
>
>
> On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik
>  wrote:
>
>  I just downloaded the buster 2.8 iso and tested it on an 8200 (8300
> usually runs just slightly better in my experience)
>
> This was overnight with glxgears running.
>
>
>
> On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne
> 
>
> wrote:
> > On 9/8/20 12:48 PM, Dave Matthews wrote:
> > > A few weeks ago someone mentioned the HP 8300 SFF as having very
> > > good jitter numbers.  Those are an i5 that takes a $5 cable to add
> > > the parallel port.  Usually about $150 US on Amazon.
> > >
> > > $155 today -
> >
> > https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1B
> >O/ref=sr_1_1?dchild=1&keywords=hp+8300+sff&qid=1599583671&sr=8-1
> >
> > That's the Amazon price with Win10.  It's $81 on eBay, maybe less
> > for one without Windows.  Search for item number 184439631747, or
> > more generically, search for "HP 8300 i5 -usdt".
> >
> > I can't vouch for how well it runs LinuxCNC, but the i7 version
> > (eBay, off lease) has been my Linux desktop PC for the past few
> > years and it's on 24/7.  It's been 100% reliable and with a solid
> > state drive and Linux, it runs like a scalded dog.  I run FreeCAD
> > and it'll spin a complex model, generating shaded images at more
> > than twice the frame rate needed for smooth persistence of vision
> > video.  There's definitely something to be said for a reliable PC to
> > use for LinuxCNC in the shop.
> >
> > In hind sight, I probably should have gotten good used PCs that run
> > LinuxCNC instead of buying a bunch of Intel motherboards so I could
> > have standard controllers for all of my LinuxCNC projects.  However,
> > I was very stoked to see that LinuxCNC 2.8.0 can be installed on a
> > Raspberry Pi 4.  That's very cool, and would be ideal for tiny
> > machines like a little desktop CNC router or a Sherline mini lathe.
> >
Why limit it to toy's? I am running a 75 yo 11x56 Sheldon lathe with an 
rpi4, make it do things it never dreamed of doing originally with a 
compound and taper attachment, but without either, and much faster than 
original after the gcode is written. No between cuts pauses to check 
your next cut. :)

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Mini-PC

[andy pugh]

On Thu, 10 Sep 2020 at 18:56, Scott Harwell via Emc-users
 wrote:
>
>  I'm testing on the HP8300  $115 with keyboard and mouse from Newegg. It 
> looks good but I have two problems (probably me). No root password and power 
> management time out.

The no-root-password is deliberate as, if a root password is given,
the Debian installer disables "sudo" for all users.

You shouldn't need the root account (use sudo) but if you do then you
can enable it with 'sudo passwd root'

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912


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Re: [Emc-users] Mini-PC

[Scott Harwell via Emc-users]

 MY mistake it is HP Elitedesk 800 G1 SFF i5-4570 3.2GHz 8GB RAM 500GB HDD 
Refurbished
 

| 
| 
| 
|  |  |

 |

 |
| 
|  | 
HP Elitedesk 800 G1 SFF i5-4570 3.2GHz 8GB RAM 500GB HDD Windows 10 Home...

Buy HP Elitedesk 800 G1 SFF i5-4570 3.2GHz 8GB RAM 500GB HDD Windows 10 Home 
with fast shipping and top-rated cu...
 |

 |

 |



Scott



On Thursday, September 10, 2020, 12:56:29 PM CDT, Scott Harwell via 
Emc-users  wrote:  
 
  I'm testing on the HP8300  $115 with keyboard and mouse from Newegg. It looks 
good but I have two problems (probably me). No root password and power 
management time out. 

Scott


    On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik 
 wrote:  
 
 I just downloaded the buster 2.8 iso and tested it on an 8200 (8300 usually
runs just slightly better in my experience)

This was overnight with glxgears running.



On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne 
wrote:

>
>
> On 9/8/20 12:48 PM, Dave Matthews wrote:
> > A few weeks ago someone mentioned the HP 8300 SFF as having very good
> > jitter numbers.  Those are an i5 that takes a $5 cable to add the
> > parallel port.  Usually about $150 US on Amazon.
> >
> > $155 today -
> https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1&keywords=hp+8300+sff&qid=1599583671&sr=8-1
>
> That's the Amazon price with Win10.  It's $81 on eBay, maybe less for
> one without Windows.  Search for item number 184439631747, or more
> generically, search for "HP 8300 i5 -usdt".
>
> I can't vouch for how well it runs LinuxCNC, but the i7 version (eBay,
> off lease) has been my Linux desktop PC for the past few years and it's
> on 24/7.  It's been 100% reliable and with a solid state drive and
> Linux, it runs like a scalded dog.  I run FreeCAD and it'll spin a
> complex model, generating shaded images at more than twice the frame
> rate needed for smooth persistence of vision video.  There's definitely
> something to be said for a reliable PC to use for LinuxCNC in the shop.
>
> In hind sight, I probably should have gotten good used PCs that run
> LinuxCNC instead of buying a bunch of Intel motherboards so I could have
> standard controllers for all of my LinuxCNC projects.  However, I was
> very stoked to see that LinuxCNC 2.8.0 can be installed on a Raspberry
> Pi 4.  That's very cool, and would be ideal for tiny machines like a
> little desktop CNC router or a Sherline mini lathe.
>
>
>
>
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Re: [Emc-users] Mini-PC

[Scott Harwell via Emc-users]

 I'm testing on the HP8300  $115 with keyboard and mouse from Newegg. It looks 
good but I have two problems (probably me). No root password and power 
management time out. 

Scott


On Thursday, September 10, 2020, 11:02:19 AM CDT, Sam Sokolik 
 wrote:  
 
 I just downloaded the buster 2.8 iso and tested it on an 8200 (8300 usually
runs just slightly better in my experience)

This was overnight with glxgears running.



On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne 
wrote:

>
>
> On 9/8/20 12:48 PM, Dave Matthews wrote:
> > A few weeks ago someone mentioned the HP 8300 SFF as having very good
> > jitter numbers.  Those are an i5 that takes a $5 cable to add the
> > parallel port.  Usually about $150 US on Amazon.
> >
> > $155 today -
> https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1&keywords=hp+8300+sff&qid=1599583671&sr=8-1
>
> That's the Amazon price with Win10.  It's $81 on eBay, maybe less for
> one without Windows.  Search for item number 184439631747, or more
> generically, search for "HP 8300 i5 -usdt".
>
> I can't vouch for how well it runs LinuxCNC, but the i7 version (eBay,
> off lease) has been my Linux desktop PC for the past few years and it's
> on 24/7.  It's been 100% reliable and with a solid state drive and
> Linux, it runs like a scalded dog.  I run FreeCAD and it'll spin a
> complex model, generating shaded images at more than twice the frame
> rate needed for smooth persistence of vision video.  There's definitely
> something to be said for a reliable PC to use for LinuxCNC in the shop.
>
> In hind sight, I probably should have gotten good used PCs that run
> LinuxCNC instead of buying a bunch of Intel motherboards so I could have
> standard controllers for all of my LinuxCNC projects.  However, I was
> very stoked to see that LinuxCNC 2.8.0 can be installed on a Raspberry
> Pi 4.  That's very cool, and would be ideal for tiny machines like a
> little desktop CNC router or a Sherline mini lathe.
>
>
>
>
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Re: [Emc-users] Mini-PC

[Leonardo Marsaglia]

Just to inform you guys, as Sam did.

I tried it yesterday on a MSI A68HM-E33 V2 motherboard with an AMD A6 7480
processor, with onboard video support. I got 80 usecs of jitter on the
servo thread with 3 instances of glxgears running almost an hour
approximately. LinuxCNC runs well with the sim configs. I only need to try
it with the MESA 7i80HD board that I'm going to purchase in a few days.

The only thing I had to do was to set the grub to nomodeset because if not
I had troubles with the video (black screen). I saw this was a common error
with this new Debian version so nothing to worry about nor LCNC related.

El jue., 10 sept. 2020 a las 13:02, Sam Sokolik ()
escribió:

> I just downloaded the buster 2.8 iso and tested it on an 8200 (8300 usually
> runs just slightly better in my experience)
>
> This was overnight with glxgears running.
>
>
>
> On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne 
> wrote:
>
> >
> >
> > On 9/8/20 12:48 PM, Dave Matthews wrote:
> > > A few weeks ago someone mentioned the HP 8300 SFF as having very good
> > > jitter numbers.  Those are an i5 that takes a $5 cable to add the
> > > parallel port.  Usually about $150 US on Amazon.
> > >
> > > $155 today -
> >
> https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1&keywords=hp+8300+sff&qid=1599583671&sr=8-1
> >
> > That's the Amazon price with Win10.  It's $81 on eBay, maybe less for
> > one without Windows.  Search for item number 184439631747, or more
> > generically, search for "HP 8300 i5 -usdt".
> >
> > I can't vouch for how well it runs LinuxCNC, but the i7 version (eBay,
> > off lease) has been my Linux desktop PC for the past few years and it's
> > on 24/7.  It's been 100% reliable and with a solid state drive and
> > Linux, it runs like a scalded dog.  I run FreeCAD and it'll spin a
> > complex model, generating shaded images at more than twice the frame
> > rate needed for smooth persistence of vision video.  There's definitely
> > something to be said for a reliable PC to use for LinuxCNC in the shop.
> >
> > In hind sight, I probably should have gotten good used PCs that run
> > LinuxCNC instead of buying a bunch of Intel motherboards so I could have
> > standard controllers for all of my LinuxCNC projects.  However, I was
> > very stoked to see that LinuxCNC 2.8.0 can be installed on a Raspberry
> > Pi 4.  That's very cool, and would be ideal for tiny machines like a
> > little desktop CNC router or a Sherline mini lathe.
> >
> >
> >
> >
> > ___
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> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
> ___
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Re: [Emc-users] Mini-PC

[Sam Sokolik]

I just downloaded the buster 2.8 iso and tested it on an 8200 (8300 usually
runs just slightly better in my experience)

This was overnight with glxgears running.



On Tue, Sep 8, 2020 at 11:45 PM Bruce Layne 
wrote:

>
>
> On 9/8/20 12:48 PM, Dave Matthews wrote:
> > A few weeks ago someone mentioned the HP 8300 SFF as having very good
> > jitter numbers.  Those are an i5 that takes a $5 cable to add the
> > parallel port.  Usually about $150 US on Amazon.
> >
> > $155 today -
> https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1&keywords=hp+8300+sff&qid=1599583671&sr=8-1
>
> That's the Amazon price with Win10.  It's $81 on eBay, maybe less for
> one without Windows.  Search for item number 184439631747, or more
> generically, search for "HP 8300 i5 -usdt".
>
> I can't vouch for how well it runs LinuxCNC, but the i7 version (eBay,
> off lease) has been my Linux desktop PC for the past few years and it's
> on 24/7.  It's been 100% reliable and with a solid state drive and
> Linux, it runs like a scalded dog.  I run FreeCAD and it'll spin a
> complex model, generating shaded images at more than twice the frame
> rate needed for smooth persistence of vision video.  There's definitely
> something to be said for a reliable PC to use for LinuxCNC in the shop.
>
> In hind sight, I probably should have gotten good used PCs that run
> LinuxCNC instead of buying a bunch of Intel motherboards so I could have
> standard controllers for all of my LinuxCNC projects.  However, I was
> very stoked to see that LinuxCNC 2.8.0 can be installed on a Raspberry
> Pi 4.  That's very cool, and would be ideal for tiny machines like a
> little desktop CNC router or a Sherline mini lathe.
>
>
>
>
> ___
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> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>

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Re: [Emc-users] Mini-PC

[Bruce Layne]

On 9/8/20 12:48 PM, Dave Matthews wrote:
> A few weeks ago someone mentioned the HP 8300 SFF as having very good
> jitter numbers.  Those are an i5 that takes a $5 cable to add the
> parallel port.  Usually about $150 US on Amazon.
>
> $155 today - 
> https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1&keywords=hp+8300+sff&qid=1599583671&sr=8-1

That's the Amazon price with Win10.  It's $81 on eBay, maybe less for
one without Windows.  Search for item number 184439631747, or more
generically, search for "HP 8300 i5 -usdt".

I can't vouch for how well it runs LinuxCNC, but the i7 version (eBay,
off lease) has been my Linux desktop PC for the past few years and it's
on 24/7.  It's been 100% reliable and with a solid state drive and
Linux, it runs like a scalded dog.  I run FreeCAD and it'll spin a
complex model, generating shaded images at more than twice the frame
rate needed for smooth persistence of vision video.  There's definitely
something to be said for a reliable PC to use for LinuxCNC in the shop.

In hind sight, I probably should have gotten good used PCs that run
LinuxCNC instead of buying a bunch of Intel motherboards so I could have
standard controllers for all of my LinuxCNC projects.  However, I was
very stoked to see that LinuxCNC 2.8.0 can be installed on a Raspberry
Pi 4.  That's very cool, and would be ideal for tiny machines like a
little desktop CNC router or a Sherline mini lathe.




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[Emc-users] Mini-PC

[andy pugh]

> On 8 Sep 2020, at 17:44, John Dammeyer  wrote:
>
> Looking forward to a report from Andy on how well it works.

I probably won’t  recommend it.
It filled a particular need, being a real x86 and available very quickly.
I only wanted it to test the LinuxCNC installer.

But it’s a nice little box for other uses.


-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912


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Re: [Emc-users] Mini-PC

[Dave Matthews]

On Tue, Sep 8, 2020 at 12:44 PM John Dammeyer  wrote:
>
> > From: Gene Heskett [mailto:ghesk...@shentel.net]
> > On Tuesday 08 September 2020 04:56:04 andy pugh wrote:
--
> > --
>
> Actually Gene it's $178.90 Cdn and I can have one tomorrow via no cost Prime 
> Shipping.
>
> Beelink BT3 Pro II Mini PC 4GB Ram 64GB eMMC Windows 10 Desktop Computer 
> Intel Atom X5-Z8350 HDMI+VGA Display,
>
> Looking forward to a report from Andy on how well it works.
>
> John
>

A few weeks ago someone mentioned the HP 8300 SFF as having very good
jitter numbers.  Those are an i5 that takes a $5 cable to add the
parallel port.  Usually about $150 US on Amazon.

$155 today - 
https://www.amazon.com/HP-8300-Elite-Computer-Quad-Core/dp/B01CV9G1BO/ref=sr_1_1?dchild=1&keywords=hp+8300+sff&qid=1599583671&sr=8-1

Dave


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Re: [Emc-users] Mini-PC

[John Dammeyer]

> From: Gene Heskett [mailto:ghesk...@shentel.net]
> On Tuesday 08 September 2020 04:56:04 andy pugh wrote:
> 
> > Yesterday I decided I needed yet another PC to do a test install of
> > the LiveCD (as I did not want to wipe my triple-booting test machine
> > which has all the Mesa cards on it, and my old D510MO was
> > demonstrating why it is no longer my mill controller.
> >
> > I bought the cheapest x86 machine that Amazon had on same-day delivery
> > (ordered at 1100, arrived 1830) which turned out to be:
> > https://www.amazon.co.uk/gp/product/B089RDVP7F
> > Though at the time I ordered it the price was �84 delivered (�92,
> > $109, 1825ZAR) as it was on a flash deal.
> > It has 4GB ram, a 64GB SSD and comes with Windows 10 pre-installed and
> > UEFI
> 119 lbs but cannot ship to the us. And considering its an atom, horrible
> latency. I have see as little as 12 ns out of my pi4 if nothing else is
> disturbing it. firefox, browsing the web = 200ns but never gets any
> worse. With an spi drive to a mesa 7i90 it simply doesn't care.  It Just
> Works.
> 
> Cheers, Gene Heskett
> --

Actually Gene it's $178.90 Cdn and I can have one tomorrow via no cost Prime 
Shipping.  

Beelink BT3 Pro II Mini PC 4GB Ram 64GB eMMC Windows 10 Desktop Computer Intel 
Atom X5-Z8350 HDMI+VGA Display,

Looking forward to a report from Andy on how well it works.

John




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Re: [Emc-users] Mini-PC

[Dave Matthews]

On Tue, Sep 8, 2020 at 5:03 AM andy pugh  wrote:
>

>
> 1) The Wifi chip needs proprietary drivers. The installer does not
> appear to know how to get these.
> 2) Installation of Grub2 failed the first time. Google suggested that
> it would succeed if the machine had a network connection, and by
> plugging in an ethernet connection the process went smoothly.
>


I hit #1 when I did my last install.  I couldn't get the GUI based
installer to bypass the network stuff and ended up using the text
based installer.  Is there any way to get the GUI based installer to
bypass network stuff?  It seems like it wasn't totally obvious how to
get the install to work on the text based installer.

Dave


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Re: [Emc-users] Mini-PC

[Gene Heskett]

On Tuesday 08 September 2020 04:56:04 andy pugh wrote:

> Yesterday I decided I needed yet another PC to do a test install of
> the LiveCD (as I did not want to wipe my triple-booting test machine
> which has all the Mesa cards on it, and my old D510MO was
> demonstrating why it is no longer my mill controller.
>
> I bought the cheapest x86 machine that Amazon had on same-day delivery
> (ordered at 1100, arrived 1830) which turned out to be:
> https://www.amazon.co.uk/gp/product/B089RDVP7F
> Though at the time I ordered it the price was £84 delivered (€92,
> $109, 1825ZAR) as it was on a flash deal.
> It has 4GB ram, a 64GB SSD and comes with Windows 10 pre-installed and
> UEFI
>
> LinuxCNC installation hit two minor bumps, which is the main reason
> for this email.
>
> 1) The Wifi chip needs proprietary drivers. The installer does not
> appear to know how to get these.
> 2) Installation of Grub2 failed the first time. Google suggested that
> it would succeed if the machine had a network connection, and by
> plugging in an ethernet connection the process went smoothly.
>
> Having installed LinuxCNC and the Buster preempt kernel, the latency
> is, well, unspectacular. It runs at about 120uS or 120,000nS which is
> certainly not good enough for hardware stepping, but with no parallel
> port or other GPIO this isn't really relevant. It ought to work with a
> Mesa ethernet card but that is not yet tested.
>
119 lbs but cannot ship to the us. And considering its an atom, horrible 
latency. I have see as little as 12 ns out of my pi4 if nothing else is 
disturbing it. firefox, browsing the web = 200ns but never gets any 
worse. With an spi drive to a mesa 7i90 it simply doesn't care.  It Just 
Works.

> It's tiny. About as thick as a Pi and twice as wide. It comes with a
> bracket to mount it on the back of a monitor or TV.


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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[Emc-users] Mini-PC

[andy pugh]

Yesterday I decided I needed yet another PC to do a test install of
the LiveCD (as I did not want to wipe my triple-booting test machine
which has all the Mesa cards on it, and my old D510MO was
demonstrating why it is no longer my mill controller.

I bought the cheapest x86 machine that Amazon had on same-day delivery
(ordered at 1100, arrived 1830) which turned out to be:
https://www.amazon.co.uk/gp/product/B089RDVP7F
Though at the time I ordered it the price was £84 delivered (€92,
$109, 1825ZAR) as it was on a flash deal.
It has 4GB ram, a 64GB SSD and comes with Windows 10 pre-installed and UEFI

LinuxCNC installation hit two minor bumps, which is the main reason
for this email.

1) The Wifi chip needs proprietary drivers. The installer does not
appear to know how to get these.
2) Installation of Grub2 failed the first time. Google suggested that
it would succeed if the machine had a network connection, and by
plugging in an ethernet connection the process went smoothly.

Having installed LinuxCNC and the Buster preempt kernel, the latency
is, well, unspectacular. It runs at about 120uS or 120,000nS which is
certainly not good enough for hardware stepping, but with no parallel
port or other GPIO this isn't really relevant. It ought to work with a
Mesa ethernet card but that is not yet tested.

It's tiny. About as thick as a Pi and twice as wide. It comes with a
bracket to mount it on the back of a monitor or TV.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912


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