Re: [Emc-users] Adding an RS485 interface [Was: Re: about to give up on the pi's]

[Erik Christiansen]

On 04.05.17 20:43, Gene Heskett wrote:
> On Thursday 04 May 2017 13:47:22 Chris Albertson wrote:
> > Yes I agree conversion is cheap and easy,   You can buy the Max chips
> > on breakout boards with connectors for 50 cents each
> > ebay.com/itm/2PCS-MAX485-Module
> >  >5-Converter-For-Arduino/131694536431?_trksid=p2047675.c15.m1851&_tr
> >kparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D2%26asc%3D40130%26meid%3De5
> >19e5e6252c4e40b7d0fa2b19dcd5fc%26pid%3D15%26rk%3D6%26rkt%3D6%26meho
> >t%3Dag%26sd%3D112076449800> In most cases it is best to buy the chips
> > on boards with connectors.  Saves you from a lot of work.

That's a good find. I may buy a few, just to breadboard with before I
get around to doing a board with ATmega328P and RS485 chip in one.

> I agree. The only problem with this board is that its rs485 only. 
> Unbalanced IOW.

No, not so, Gene. As already pointed out, RS485 is the multipoint
version of RS422, so balanced enough to pass a "walk the dotted line"
DUI test. ;-) Seriously, the 'A' and 'B' balanced line labels can be
seen on the PCB at the above link.

...
> And its data rate must be pretty slow, its slew rated but not in any
> usefull way.

Ah, yes, the MAX485 will limit you to 2.5 Mb/s, and tolerance of
"improperly terminated cables" isn't something we'd need. The jabber
about "reduced EMI" sounds dubious too, as properly terminated twisted
pair ought not radiate alarmingly.

> > People are using Cat5 (Ethernet cable) for all types of serial links
> > now. It just works better as most links are now balanced pairs.

Yes, a reel of that stuff is buried somewhere in any good components
stash, I hold.

Erik

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Re: [Emc-users] about to give up on the pi's

[Chris Albertson]

No.  The one to use is
amazon.com/dp/B00K53CQK4

It is $70 and takes arduino spec'd shields.  These kind of products are
good if building a portable battery powered device.

But really, a $50 ITX size Atom board is even more powerful at less cost.



On Thu, May 4, 2017 at 5:42 PM, Steve Traugott  wrote:

> Has anyone tried an (Intel) Edison yet?  It's an x86 machine, and comes in
> at $100 if you add the arduino-pinout carrier board to give you all the I/O
> pins:  https://www.sparkfun.com/products/13097
>
> On Thu, May 4, 2017 at 2:38 PM, Gene Heskett  wrote:
>
> > On Thursday 04 May 2017 13:14:07 Jon Elson wrote:
> >
> > > On 05/03/2017 11:36 PM, Gene Heskett wrote:
> > > > On Wednesday 03 May 2017 23:44:02 Jon Elson wrote:
> > > >> On 05/03/2017 09:28 PM, Gene Heskett wrote:
> > > >>> The killer in the beaglebone soup is the cost of the "capes".
> > > >>> You've over $200 plus psu's etc before it can turn 2 motors at the
> > > >>> same time.
> > > >>
> > > >> Umm, the CRAMPS board is $79.95, and I sell the 8825 drivers
> > > >> for $5 each, but I get them from China for about $1.30
> > > >> each.
> > > >
> > > > The 8825 does what?  I need to take another look at your site I
> > > > guess.
> > >
> > > 2 A 35 V stepper driver.
> >
> > Whereas I'm at 43 volts and 5 amps on x(8 wire motor in parallel), 65V
> > and around 3.5A on z.
> >
> > And fixing to add another 20 volts to x, its tapped out at about 40 ipm.
> > Fairly small fine threaded ball screw.
> >
> > > >> The BeagleBone is $55,
> > > >
> > > > And how many cores & how fast is its arm?
> > >
> > > I think it is only one core, 1 GHz.  Works fine for
> > > Machinekit/LinuxCNC control of Cartesian machine, but ssh -X
> > > connection from a machine with a screen is noticeably slower
> > > than an X86 PC with directly-connected screen.
> >
> > Where this pi has 4 cores, 64 bit, and is running at 1.2GHz
> > And twice the memory.  Needs more yet.  So I think I'll stick with it
> > unless this last experiment fails. dd is still munching away at creating
> > a clone of the only u-sd that will still boot it.
> >
> > Then 2 boxes of deck stuff just walked up and plopped themselves down on
> > the front deck, which I am suspecting I'll need to modify the gazebo as
> > its too tall to fit under the roof overhang. Might wind up ripping out
> > some greenery and extending the deck, outward by a foot or so and east 5
> > feet as it will block the front door otherwise.  Fun and games with
> > 2x8's for framing and 2x4's for flooring.
> >
> > If it ever happens. Dee said no.  So I've spent the afternoon assembling
> > the deck furniture, which came in flatish pieces. Got the corner chair
> > piece and 2 chairs, but still have 2 in the box when it started a light
> > rain, and my back said enough already. So dinner is warming in the
> > microwave.
> > >
> > > The Beagle Bone has 2 PRU processors (200 MHz real time
> > > 32-bit CPUs) that Charles Steinkuehler set up the framework
> > > for so that LinuxCNC can do fast stepping, PWM and encoder
> > > counting.  Not quite FPGA performance, but WAY faster than
> > > software stepping.  So, that relieves the ARM CPU from the
> > > base thread tasks.
> > >
> > > Jon
> > >
> > Thanks Jon.
> >
> > 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)
> > Genes Web page 
> >
> > 
> > --
> > Check out the vibrant tech community on one of the world's most
> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
> 
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Re: [Emc-users] about to give up on the pi's

[TJoseph Powderly]

hi gene

On 05/05/17 08:16, Gene Heskett wrote:
> Charles;
> Its actually running the 2.8pre x86 code, for master-sim, straight out of
> the buildbot at .
? raspberry pi runs x86 code?
also
the url might be better as

   please look for   "jessie master-sim"

or describe it as an entry to sources.list

> Sim in this case only seems to mean its not running any cpu burning PID
> modules.

did you actually use
http://buildbot.linuxcnc.org/dists/jessie/2.7-sim/binary-armhf/linuxcnc-uspace-dev_2.7.8.16.ga380981_armhf.deb
 

or a similar armhf version?

> And doesn't appear to suffer because of the lack of PID's on a
> stepper system.
so you used a sim but got it to drive hardware?
the spi module talked to the 7i90 using a sim linuxcnc?
> With servo's I'd expect to need the PID's.  Other than
> that, the ini, hal, xml and assorted txt files should be able to run on
> an x86 box if I mailed them to you.  Correcting the i/o wiring, or the
> hal bits that assign a signal to such and such a pin to match up with
> what you've got built already would be the major reason to edit the hal
> files.
>
>> I have someone interested in using a RPi+Mesa instead of a BBB for a
>> small machine control.  We're not actively building Machinekit
>> packages for Raspbian, and I noticed the LCNC hostmot2 driver has a
>> RPi SPI driver.  Is that what you're using?
> yes, hm2-rpspi.ko, which is loaded by the hm2-7i90.ko card driver.
>
>> I don't want to point him
>> this direction if it's not particularly stable, but he's technically
>> savvy enough to get over a few rough spots.
> Since I'm walking on new ground with this, Martinjack seems to have
> disappeared, its a somewhat lonely trail.  I could use the company as I
> toddle along.
>
> Its just as stable as the same code running on an x86 box would be.
>
> The only warning I'd issue other than keeping motorish noises out of the
> system with a single point ground system, is the whole i/o on a pi comes
> and goes thru whats basically a usb hub, and keyboard/mouse events seem
> to be treated with very poor priority as the uptime accumulates.
>
> Generally fixed for a while by rebooting. That needs addressed by the pi
> builders, probably by adding enough memory that it stays out of the swap
> file.  It has a gig now, needs another from my diagnosis.
>
> Cheers, Gene Heskett

thanks gene,

i may look again at the OPI+2e which runs video smooth with recent ( 
april2017)  debian xfce4

apparently some tricks can be pulled using DietPi to make it more 
lightweight and hopefully les latent.

tomp tjtr33

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[Emc-users] making clone of the sd card. It works!

[Gene Heskett]

Greetings;

My useing dd against the mounted sd card, not the mounted partitions, but 
the raw card, making a 32 gigabyte image of the whole card worked when I 
used dd to put that file back on another, would not boot, sd card.  It 
not only booted just fine, but I came back in the house to this machine 
and ssh -Y pi@raspi into it without even having to do any housecleaning 
in .ssh/known_hosts!  It truly is a clone!

So I just started it all over again on the dead PNY card. The test card 
was a SamSung and dd managed to write it full at 860kb/sec.  It will be 
interesting to see, sometime tomorrow, how fast the PNY card is.

So now I can afford to experiment, and maybe even find the duff updated 
file.

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)
Genes Web page 

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Re: [Emc-users] Google Docs Scam

[TJoseph Powderly]

On 05/05/17 01:56, Nicklas Karlsson wrote:
> Yes I got your E-mail.
>
Hello Nicklas, sorry if it was the scam email about a document
( not just these emails from linuxcnc list )

i finally got it to work

history---

i changed may password and could not log in thru thunderbird to my gamil 
account

i completely removed and reinstalled thunderbird. i disabled local 
caching of apt files

i could not log in, ('next' button did nothing )

i removed tbird again and reinstalled   same thing

i removed tbird again and forced install of earlier precise version ( 
had upgraded precise version failing )

i got slightly different results

i set google prefs to allow 'insecure application'

i completely removed and reinstalled tbird

then thunderbird loaded, logged in, verified me and my account,

and here i am !

so thunderbird is 'insecure' according to google...

thats why i could access thru web gmail on any system, thats all google 
blessed

arrgh!

tomp tjtr33



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Re: [Emc-users] about to give up on the pi's

[Gene Heskett]

On Thursday 04 May 2017 16:25:00 Charles Steinkuehler wrote:

> On 5/4/2017 11:44 AM, Gene Heskett wrote:
> > On Thursday 04 May 2017 10:34:15 Przemek Klosowski wrote:
> >> Just to further confuse the matters, here's another ARM board: it's
> >> a BeagleBone version specially designed for robotics/machine
> >> control:
> >>
> >> http://makezine.com/product-review/beaglebone-blue/?utm_source=face
> >>boo
> >> k&utm_medium=social&utm_campaign=digikey&utm_term=boards%20guide&ut
> >>m_co ntent=beaglebone%20blue
> >
> > If I was starting from scratch, maybe. But I've now 6 months
> > invested in the pi, and I've written a heck of a lot of code.
>
> Out of curiosity, are you building from source or is there a package
> repo for LinuxCNC on the RPi?
>
Charles;

Its actually running the 2.8pre x86 code, for master-sim, straight out of 
the buildbot at .

Sim in this case only seems to mean its not running any cpu burning PID 
modules.  And doesn't appear to suffer because of the lack of PID's on a 
stepper system.  With servo's I'd expect to need the PID's.  Other than 
that, the ini, hal, xml and assorted txt files should be able to run on 
an x86 box if I mailed them to you.  Correcting the i/o wiring, or the 
hal bits that assign a signal to such and such a pin to match up with 
what you've got built already would be the major reason to edit the hal 
files.

> I have someone interested in using a RPi+Mesa instead of a BBB for a
> small machine control.  We're not actively building Machinekit
> packages for Raspbian, and I noticed the LCNC hostmot2 driver has a
> RPi SPI driver.  Is that what you're using?

yes, hm2-rpspi.ko, which is loaded by the hm2-7i90.ko card driver.

> I don't want to point him 
> this direction if it's not particularly stable, but he's technically
> savvy enough to get over a few rough spots.

Since I'm walking on new ground with this, Martinjack seems to have 
disappeared, its a somewhat lonely trail.  I could use the company as I 
toddle along.

Its just as stable as the same code running on an x86 box would be.

The only warning I'd issue other than keeping motorish noises out of the 
system with a single point ground system, is the whole i/o on a pi comes 
and goes thru whats basically a usb hub, and keyboard/mouse events seem 
to be treated with very poor priority as the uptime accumulates.

Generally fixed for a while by rebooting. That needs addressed by the pi 
builders, probably by adding enough memory that it stays out of the swap 
file.  It has a gig now, needs another from my diagnosis.

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)
Genes Web page 

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Re: [Emc-users] about to give up on the pi's

[Steve Traugott]

Has anyone tried an (Intel) Edison yet?  It's an x86 machine, and comes in
at $100 if you add the arduino-pinout carrier board to give you all the I/O
pins:  https://www.sparkfun.com/products/13097

On Thu, May 4, 2017 at 2:38 PM, Gene Heskett  wrote:

> On Thursday 04 May 2017 13:14:07 Jon Elson wrote:
>
> > On 05/03/2017 11:36 PM, Gene Heskett wrote:
> > > On Wednesday 03 May 2017 23:44:02 Jon Elson wrote:
> > >> On 05/03/2017 09:28 PM, Gene Heskett wrote:
> > >>> The killer in the beaglebone soup is the cost of the "capes".
> > >>> You've over $200 plus psu's etc before it can turn 2 motors at the
> > >>> same time.
> > >>
> > >> Umm, the CRAMPS board is $79.95, and I sell the 8825 drivers
> > >> for $5 each, but I get them from China for about $1.30
> > >> each.
> > >
> > > The 8825 does what?  I need to take another look at your site I
> > > guess.
> >
> > 2 A 35 V stepper driver.
>
> Whereas I'm at 43 volts and 5 amps on x(8 wire motor in parallel), 65V
> and around 3.5A on z.
>
> And fixing to add another 20 volts to x, its tapped out at about 40 ipm.
> Fairly small fine threaded ball screw.
>
> > >> The BeagleBone is $55,
> > >
> > > And how many cores & how fast is its arm?
> >
> > I think it is only one core, 1 GHz.  Works fine for
> > Machinekit/LinuxCNC control of Cartesian machine, but ssh -X
> > connection from a machine with a screen is noticeably slower
> > than an X86 PC with directly-connected screen.
>
> Where this pi has 4 cores, 64 bit, and is running at 1.2GHz
> And twice the memory.  Needs more yet.  So I think I'll stick with it
> unless this last experiment fails. dd is still munching away at creating
> a clone of the only u-sd that will still boot it.
>
> Then 2 boxes of deck stuff just walked up and plopped themselves down on
> the front deck, which I am suspecting I'll need to modify the gazebo as
> its too tall to fit under the roof overhang. Might wind up ripping out
> some greenery and extending the deck, outward by a foot or so and east 5
> feet as it will block the front door otherwise.  Fun and games with
> 2x8's for framing and 2x4's for flooring.
>
> If it ever happens. Dee said no.  So I've spent the afternoon assembling
> the deck furniture, which came in flatish pieces. Got the corner chair
> piece and 2 chairs, but still have 2 in the box when it started a light
> rain, and my back said enough already. So dinner is warming in the
> microwave.
> >
> > The Beagle Bone has 2 PRU processors (200 MHz real time
> > 32-bit CPUs) that Charles Steinkuehler set up the framework
> > for so that LinuxCNC can do fast stepping, PWM and encoder
> > counting.  Not quite FPGA performance, but WAY faster than
> > software stepping.  So, that relieves the ARM CPU from the
> > base thread tasks.
> >
> > Jon
> >
> Thanks Jon.
>
> 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)
> Genes Web page 
>
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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Re: [Emc-users] Adding an RS485 interface [Was: Re: about to give up on the pi's]

[Gene Heskett]

On Thursday 04 May 2017 13:47:22 Chris Albertson wrote:

> On Wed, May 3, 2017 at 11:32 PM, Erik Christiansen
> 
>
> wrote:
> > On 03.05.17 22:40, Gene Heskett wrote:
> > > On Wednesday 03 May 2017 22:29:43 Chris Albertson wrote:
> > > > RS422 is balanced and opt isolated at the Mesa card end so you
> > > > likely have better noise resistance then with SPI.
> > >
> > > rs485 is the single ended cousin.  Could a atom board keep up with
> > > that with a pci-e rs422 card in it?  That does have a bit of an
> > > attraction, particularly from the noise safety dept.  Silly Q: can
> > > the pi do rs422 over its gpio?
> >
> > Hook a RS485/RS422 transceiver to a Pi's serial TXD & RXD, and
> > terminate each end of the twisted pair cable in 120 ohms, then it's
> > done. All the chip does is TTL/CMOS to differential Tx & Rx.
>
> What is the maximum bit rate of the Pi's serial TXD & RXD?   The 7i90
> can accept RS422 up to 10M bits/second.  Can the Pi take advantage
> that? Certainly an Intel PC could,
>
I don't see why not. The spi runs with a 32 megahertz clock, thru 4 gpio 
pins. Its a half-duplex protocol.

> Yes I agree conversion is cheap and easy,   You can buy the Max chips
> on breakout boards with connectors for 50 cents each
> ebay.com/itm/2PCS-MAX485-Module
> 5-Converter-For-Arduino/131694536431?_trksid=p2047675.c15.m1851&_tr
>kparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D2%26asc%3D40130%26meid%3De5
>19e5e6252c4e40b7d0fa2b19dcd5fc%26pid%3D15%26rk%3D6%26rkt%3D6%26meho
>t%3Dag%26sd%3D112076449800> In most cases it is best to buy the chips
> on boards with connectors.  Saves you from a lot of work.
>
I agree. The only problem with this board is that its rs485 only. 
Unbalanced IOW. So theres goes some of the noise margin. And its data 
rate must be pretty slow, its slew rated but not in any usefull way.

> People are using Cat5 (Ethernet cable) for all types of serial links
> now. It just works better as most links are now balanced pairs.
>
> > I bought some surplus DS3695A RS485/RS422 half-duplex transceivers a
> > few days ago for US30c each, but they draw over 27 mA, idling, - a
> > MAX485


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)
Genes Web page 

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[Emc-users] SF mailing list seems to be flaking out.

[Greg Bentzinger]

List;

I am setup to get the digest version to reduce the total number of emails I 
have to sort through each day.

So far for MAY I have received Digests 1-3, 6, 8-11.

I checked the spam traps and trash folders and I have nothing out of place. 
Anyone else seeing issues?

Greg

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Re: [Emc-users] about to give up on the pi's

[Gene Heskett]

On Thursday 04 May 2017 13:14:07 Jon Elson wrote:

> On 05/03/2017 11:36 PM, Gene Heskett wrote:
> > On Wednesday 03 May 2017 23:44:02 Jon Elson wrote:
> >> On 05/03/2017 09:28 PM, Gene Heskett wrote:
> >>> The killer in the beaglebone soup is the cost of the "capes".
> >>> You've over $200 plus psu's etc before it can turn 2 motors at the
> >>> same time.
> >>
> >> Umm, the CRAMPS board is $79.95, and I sell the 8825 drivers
> >> for $5 each, but I get them from China for about $1.30
> >> each.
> >
> > The 8825 does what?  I need to take another look at your site I
> > guess.
>
> 2 A 35 V stepper driver.

Whereas I'm at 43 volts and 5 amps on x(8 wire motor in parallel), 65V 
and around 3.5A on z.

And fixing to add another 20 volts to x, its tapped out at about 40 ipm. 
Fairly small fine threaded ball screw.

> >> The BeagleBone is $55,
> >
> > And how many cores & how fast is its arm?
>
> I think it is only one core, 1 GHz.  Works fine for
> Machinekit/LinuxCNC control of Cartesian machine, but ssh -X
> connection from a machine with a screen is noticeably slower
> than an X86 PC with directly-connected screen.

Where this pi has 4 cores, 64 bit, and is running at 1.2GHz
And twice the memory.  Needs more yet.  So I think I'll stick with it 
unless this last experiment fails. dd is still munching away at creating 
a clone of the only u-sd that will still boot it.

Then 2 boxes of deck stuff just walked up and plopped themselves down on 
the front deck, which I am suspecting I'll need to modify the gazebo as 
its too tall to fit under the roof overhang. Might wind up ripping out 
some greenery and extending the deck, outward by a foot or so and east 5 
feet as it will block the front door otherwise.  Fun and games with 
2x8's for framing and 2x4's for flooring.

If it ever happens. Dee said no.  So I've spent the afternoon assembling 
the deck furniture, which came in flatish pieces. Got the corner chair 
piece and 2 chairs, but still have 2 in the box when it started a light 
rain, and my back said enough already. So dinner is warming in the 
microwave.
>
> The Beagle Bone has 2 PRU processors (200 MHz real time
> 32-bit CPUs) that Charles Steinkuehler set up the framework
> for so that LinuxCNC can do fast stepping, PWM and encoder
> counting.  Not quite FPGA performance, but WAY faster than
> software stepping.  So, that relieves the ARM CPU from the
> base thread tasks.
>
> Jon
>
Thanks Jon.

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)
Genes Web page 

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Re: [Emc-users] about to give up on the pi's

[Sebastian Kuzminsky]

On 05/04/2017 02:25 PM, Charles Steinkuehler wrote:
> On 5/4/2017 11:44 AM, Gene Heskett wrote:
>> On Thursday 04 May 2017 10:34:15 Przemek Klosowski wrote:
>>
>>> Just to further confuse the matters, here's another ARM board: it's a
>>> BeagleBone version specially designed for robotics/machine control:
>>>
>>> http://makezine.com/product-review/beaglebone-blue/?utm_source=faceboo
>>> k&utm_medium=social&utm_campaign=digikey&utm_term=boards%20guide&utm_co
>>> ntent=beaglebone%20blue
>>>
>> If I was starting from scratch, maybe. But I've now 6 months invested in
>> the pi, and I've written a heck of a lot of code.
>
> Out of curiosity, are you building from source or is there a package
> repo for LinuxCNC on the RPi?
>
> I have someone interested in using a RPi+Mesa instead of a BBB for a
> small machine control.  We're not actively building Machinekit
> packages for Raspbian, and I noticed the LCNC hostmot2 driver has a
> RPi SPI driver.  Is that what you're using?  I don't want to point him
> this direction if it's not particularly stable, but he's technically
> savvy enough to get over a few rough spots.

We don't build Raspbian packages.  We do build Debian Wheezy packages 
for armhf, but my understanding is those won't work on a Raspberry Pi.


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Re: [Emc-users] about to give up on the pi's

[Charles Steinkuehler]

On 5/4/2017 11:44 AM, Gene Heskett wrote:
> On Thursday 04 May 2017 10:34:15 Przemek Klosowski wrote:
> 
>> Just to further confuse the matters, here's another ARM board: it's a
>> BeagleBone version specially designed for robotics/machine control:
>>
>> http://makezine.com/product-review/beaglebone-blue/?utm_source=faceboo
>> k&utm_medium=social&utm_campaign=digikey&utm_term=boards%20guide&utm_co
>> ntent=beaglebone%20blue
>>
> If I was starting from scratch, maybe. But I've now 6 months invested in 
> the pi, and I've written a heck of a lot of code.

Out of curiosity, are you building from source or is there a package
repo for LinuxCNC on the RPi?

I have someone interested in using a RPi+Mesa instead of a BBB for a
small machine control.  We're not actively building Machinekit
packages for Raspbian, and I noticed the LCNC hostmot2 driver has a
RPi SPI driver.  Is that what you're using?  I don't want to point him
this direction if it's not particularly stable, but he's technically
savvy enough to get over a few rough spots.

-- 
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char...@steinkuehler.net

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Re: [Emc-users] Google Docs Scam

[Nicklas Karlsson]

Yes I got your E-mail.

On Thu, 4 May 2017 21:49:43 +0700
TJoseph Powderly  wrote:

> decent info
> http://www.tomsguide.com/us/google-docs-phishing-scam,news-25018.html
> 
> anybody get email from me?
> report says everyone ion my email add ook would get the mail
> i dont think i opened it... it looked suspicious
> 
> mine was from S.
> 
> tomp tjtr33
> 
> On Thu, May 4, 2017 at 5:37 PM, TJoseph Powderly  wrote:
> 
> > ooops, firefox cookies were enabled, BUT theres also thunderbird's 'accept
> > cookies'
> > great, now back to unresponsive google signin dialog inside thunderbird
> > free advise to all tbird users with gmail addresses
> > save all your email
> > Dont just change pswd.
> > Dont uninstall tbird.
> > wait for some better news from google,
> > some succesful news.
> > tomp tjtr33
> >
> > On Thu, May 4, 2017 at 5:27 PM, TJoseph Powderly  wrote:
> >
> >> still cant log in under thunderbird. dialog did change to
> >> """
> >>
> >> You've reached this page because we have detected that cookies are
> >> disabled in your browser. The page you attempted to load cannot display
> >> properly if cookies are disabled.
> >>
> >> Please enable cookies 
> >> and retry the operation or go back in your browser.
> >>
> >> """
> >> cookies have been enabed per the link in the message, system cold booted
> >> and the story remains the same.
> >> AND
> >> i can use web gmail without problems ( i are writing this now arent i? )
> >> tomp tjtr33
> >>
> >>
> >
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Re: [Emc-users] about to give up on the pi's

[Nicklas Karlsson]

A good device indeed it seems to be.

On Thu, 4 May 2017 10:34:15 -0400
Przemek Klosowski  wrote:

> Just to further confuse the matters, here's another ARM board: it's a
> BeagleBone version specially designed for robotics/machine control:
> 
> http://makezine.com/product-review/beaglebone-blue/?utm_source=facebook&utm_medium=social&utm_campaign=digikey&utm_term=boards%20guide&utm_content=beaglebone%20blue
> 
> On Wed, May 3, 2017 at 3:22 PM, Gene Heskett  wrote:
> 
> > Greetings;
> >
> > What x86 board, suitably small but not that outpriced yudoo thingy, will
> > run linuxcnc well AND can do the spi thing?
> >
> > 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)
> > Genes Web page 
> >
> > 
> > --
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> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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Re: [Emc-users] Adding an RS485 interface [Was: Re: about to give up on the pi's]

[Chris Albertson]

On Wed, May 3, 2017 at 11:32 PM, Erik Christiansen 
wrote:

> On 03.05.17 22:40, Gene Heskett wrote:
> > On Wednesday 03 May 2017 22:29:43 Chris Albertson wrote:
> > > RS422 is balanced and opt isolated at the Mesa card end so you likely
> > > have better noise resistance then with SPI.
> >
> > rs485 is the single ended cousin.  Could a atom board keep up with that
> > with a pci-e rs422 card in it?  That does have a bit of an attraction,
> > particularly from the noise safety dept.  Silly Q: can the pi do rs422
> > over its gpio?
>
> Hook a RS485/RS422 transceiver to a Pi's serial TXD & RXD, and terminate
> each end of the twisted pair cable in 120 ohms, then it's done. All the
> chip does is TTL/CMOS to differential Tx & Rx.
>

What is the maximum bit rate of the Pi's serial TXD & RXD?   The 7i90 can
accept RS422 up to 10M bits/second.  Can the Pi take advantage that?
Certainly an Intel PC could,

Yes I agree conversion is cheap and easy,   You can buy the Max chips on
breakout boards with connectors for 50 cents each
ebay.com/itm/2PCS-MAX485-Module

In most cases it is best to buy the chips on boards with connectors.  Saves
you from a lot of work.

People are using Cat5 (Ethernet cable) for all types of serial links now.
It just works better as most links are now balanced pairs.


>
> I bought some surplus DS3695A RS485/RS422 half-duplex transceivers a few
> days ago for US30c each, but they draw over 27 mA, idling, - a MAX485
>
-- 

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Redondo Beach, California
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Re: [Emc-users] about to give up on the pi's

[Andrew]

2017-05-04 20:14 GMT+03:00 Jon Elson:

> On 05/03/2017 11:36 PM, Gene Heskett wrote:
> >> The BeagleBone is $55,
> > And how many cores & how fast is its arm?
> I think it is only one core, 1 GHz.  Works fine for
> Machinekit/LinuxCNC control of Cartesian machine, but ssh -X
> connection from a machine with a screen is noticeably slower
> than an X86 PC with directly-connected screen.
>

I personally find BBB pretty interesting, PRU amazing and so on.
But what BBB really lacks is computing power. It's just terribly slow,
unfortunately. RPi 3 is probably 3 times faster and it's still not fast
enough.
Also it's pretty disappointing that Machinekit is not going to merge
joint_axes...
While I own 2 BBBs (and CRAMPS which I have not even used yet), I almost
gave up on this stuff.

OTOH I still hope for RPi & 7i90 to control at least some DIY robots.
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Re: [Emc-users] Adding an RS485 interface [Was: Re: about to give up on the pi's]

[Nicklas Karlsson]

Farnell have plenty of RS422 and RS485 drivers 
http://se.farnell.com/c/halvledare-ic-kretsar/drivkretsar-granssnitt/rs232-rs422-rs485-drivkretsar

Some extra capacitances might be a good idea to avoid voltage drop at power 
supply rail if there is capacitance between the differential lines. This is not 
a problem since capacitors are cheap but voltage drop might be and unless you 
think about it hard to figure out.




On Thu, 4 May 2017 16:32:41 +1000
Erik Christiansen  wrote:

> On 03.05.17 22:40, Gene Heskett wrote:
> > On Wednesday 03 May 2017 22:29:43 Chris Albertson wrote:
> > > RS422 is balanced and opt isolated at the Mesa card end so you likely
> > > have better noise resistance then with SPI.
> > 
> > rs485 is the single ended cousin.  Could a atom board keep up with that 
> > with a pci-e rs422 card in it?  That does have a bit of an attraction, 
> > particularly from the noise safety dept.  Silly Q: can the pi do rs422 
> > over its gpio?
> 
> Hook a RS485/RS422 transceiver to a Pi's serial TXD & RXD, and terminate
> each end of the twisted pair cable in 120 ohms, then it's done. All the
> chip does is TTL/CMOS to differential Tx & Rx.
> 
> I bought some surplus DS3695A RS485/RS422 half-duplex transceivers a few
> days ago for US30c each, but they draw over 27 mA, idling, - a MAX485
> gets by on 300 uA, though it'll only do 2.5 Mb/s. The SN65HVD485 will do
> 10 Mb/s on long lines, and draw 1 to 2 mA. (They may be the one Jon
> likes?)
> 
> Just watch pinout, driver enable logic, and whether it's full/half
> duplex. The former has separate Tx & Rx cables (4 wires) vs 2 wires.
> 
> Incidentally, it's the RS485 which is multipoint - just in case you want
> that, and go to put plastic down.
> 
> Erik
> 
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Re: [Emc-users] about to give up on the pi's

[Gene Heskett]

On Thursday 04 May 2017 12:51:02 dragon wrote:

> In case you are interested I have tried both the AsRock Q1900-ITX and
> Q1900-M. Both have a par port header on the board and worked fine with
> a Pico Universal PWM card and had a very acceptable jitter even
> without trying to tweak things.
>
> I don't see why they wouldn't work with the 7i90 as well.

They should. And its possible it might fit in the box I bought. $70 + 
some memory, about 2 Gb in 2 sticks. And a sata SSD. $200 max.  But I'm 
going to keep plugging away at this pi since I've learned a bit about 
it.  The problem now, and I pounding on the forum, is that one of the 15 
updated files over the weekend renders it unbootable. And one of them 
replaced at least half the contents of the /boot partition.

That, and the buildbot is down, has been since Wednesday I think.
>
> On 05/04/2017 11:41 AM, andy pugh wrote:
> > On 4 May 2017 at 17:33, Gene Heskett  wrote:
> >> But the only box I have that fits that description is a huge swarf
> >> magnet Dell with an old slow p4 in it. I've no clue how fast its
> >> parport might be. The only reason I haven't binned it is its my
> >> programmer for the 7i90's.
> >
> > But the question you asked was about what new x86 board to get to
> > drive the 7i90.
> > So, buy a new, fanless, Mini-ITX board with onboard parport.


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)
Genes Web page 

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Re: [Emc-users] about to give up on the pi's

[Jon Elson]

On 05/03/2017 11:36 PM, Gene Heskett wrote:
> On Wednesday 03 May 2017 23:44:02 Jon Elson wrote:
>
>> On 05/03/2017 09:28 PM, Gene Heskett wrote:
>>> The killer in the beaglebone soup is the cost of the "capes". You've
>>> over $200 plus psu's etc before it can turn 2 motors at the same
>>> time.
>> Umm, the CRAMPS board is $79.95, and I sell the 8825 drivers
>> for $5 each, but I get them from China for about $1.30
>> each.
> The 8825 does what?  I need to take another look at your site I guess.
2 A 35 V stepper driver.
>> The BeagleBone is $55,
> And how many cores & how fast is its arm?
I think it is only one core, 1 GHz.  Works fine for 
Machinekit/LinuxCNC control of Cartesian machine, but ssh -X 
connection from a machine with a screen is noticeably slower 
than an X86 PC with directly-connected screen.

The Beagle Bone has 2 PRU processors (200 MHz real time 
32-bit CPUs) that Charles Steinkuehler set up the framework 
for so that LinuxCNC can do fast stepping, PWM and encoder 
counting.  Not quite FPGA performance, but WAY faster than 
software stepping.  So, that relieves the ARM CPU from the 
base thread tasks.

Jon

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Re: [Emc-users] about to give up on the pi's

[Gene Heskett]

On Thursday 04 May 2017 12:41:32 andy pugh wrote:

> On 4 May 2017 at 17:33, Gene Heskett  wrote:
> > But the only box I have that fits that description is a huge swarf
> > magnet Dell with an old slow p4 in it. I've no clue how fast its
> > parport might be. The only reason I haven't binned it is its my
> > programmer for the 7i90's.
>
> But the question you asked was about what new x86 board to get to
> drive the 7i90.
> So, buy a new, fanless, Mini-ITX board with onboard parport.

Them's pretty sparsely listed at newegg or tigerdirect. The onboard 
parport is rapidly disappearing. URL for a suitable board plz?

Thanks Andy

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)
Genes Web page 

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Re: [Emc-users] about to give up on the pi's

[dragon]

In case you are interested I have tried both the AsRock Q1900-ITX and
Q1900-M. Both have a par port header on the board and worked fine with a
Pico Universal PWM card and had a very acceptable jitter even without
trying to tweak things.

I don't see why they wouldn't work with the 7i90 as well.


On 05/04/2017 11:41 AM, andy pugh wrote:
> On 4 May 2017 at 17:33, Gene Heskett  wrote:
>> But the only box I have that fits that description is a huge swarf magnet
>> Dell with an old slow p4 in it. I've no clue how fast its parport might
>> be. The only reason I haven't binned it is its my programmer for the
>> 7i90's.
> 
> But the question you asked was about what new x86 board to get to
> drive the 7i90.
> So, buy a new, fanless, Mini-ITX board with onboard parport.
> 



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Re: [Emc-users] about to give up on the pi's

[Gene Heskett]

On Thursday 04 May 2017 10:34:15 Przemek Klosowski wrote:

> Just to further confuse the matters, here's another ARM board: it's a
> BeagleBone version specially designed for robotics/machine control:
>
> http://makezine.com/product-review/beaglebone-blue/?utm_source=faceboo
>k&utm_medium=social&utm_campaign=digikey&utm_term=boards%20guide&utm_co
>ntent=beaglebone%20blue
>
If I was starting from scratch, maybe. But I've now 6 months invested in 
the pi, and I've written a heck of a lot of code.

So I don't want to start from scratch again. I may not have the time to 
finish it left. 


> On Wed, May 3, 2017 at 3:22 PM, Gene Heskett  
wrote:
> > Greetings;
> >
> > What x86 board, suitably small but not that outpriced yudoo thingy,
> > will run linuxcnc well AND can do the spi thing?
> >
> > 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)
> > Genes Web page 
> >
> > 
> > --
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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)
Genes Web page 

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Re: [Emc-users] about to give up on the pi's

[andy pugh]

On 4 May 2017 at 17:33, Gene Heskett  wrote:
> But the only box I have that fits that description is a huge swarf magnet
> Dell with an old slow p4 in it. I've no clue how fast its parport might
> be. The only reason I haven't binned it is its my programmer for the
> 7i90's.

But the question you asked was about what new x86 board to get to
drive the 7i90.
So, buy a new, fanless, Mini-ITX board with onboard parport.

-- 
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, 1916

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Re: [Emc-users] about to give up on the pi's

[andy pugh]

On 4 May 2017 at 17:10, Chris Albertson  wrote:
>  For example your computer
> makes step and direction pulses but a bipolar stepping motor wants to see
> voltages on it's four lead wires.   Why not have the computer computer the
> voltages?

To answer just one point, the main thing that the stepper driver does
is actively control the current through the motor.
LinuxCNC can already drive unipolar steppers directly, but only at tiny powers.

-- 
atp
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designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1916

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Re: [Emc-users] about to give up on the pi's

[Gene Heskett]

On Thursday 04 May 2017 07:40:20 andy pugh wrote:

> On 4 May 2017 at 03:29, Chris Albertson  
wrote:
> > You'd get the best bandwidth by using RS422 but the cost is higher
> > because you'd need the intel PC and the serial and graphic cards.
>
> You would also need to Hostmot2 driver layer for serial, and there
> isn't one.
>
> The 7i90 can connect to LinuxCNC with the parport now, using existing
> drivers. And it is perfectly fast enough for the job at hand. (I
> certainly never noticed any lack of bandwidth with my 7i43)

But the only box I have that fits that description is a huge swarf magnet 
Dell with an old slow p4 in it. I've no clue how fast its parport might 
be. The only reason I haven't binned it is its my programmer for the 
7i90's.

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)
Genes Web page 

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Re: [Emc-users] Adding an RS485 interface [Was: Re: about to give up on the pi's]

[Gene Heskett]

On Thursday 04 May 2017 02:32:41 Erik Christiansen wrote:

> On 03.05.17 22:40, Gene Heskett wrote:
> > On Wednesday 03 May 2017 22:29:43 Chris Albertson wrote:
> > > RS422 is balanced and opt isolated at the Mesa card end so you
> > > likely have better noise resistance then with SPI.
> >
> > rs485 is the single ended cousin.  Could a atom board keep up with
> > that with a pci-e rs422 card in it?  That does have a bit of an
> > attraction, particularly from the noise safety dept.  Silly Q: can
> > the pi do rs422 over its gpio?
>
> Hook a RS485/RS422 transceiver to a Pi's serial TXD & RXD, and
> terminate each end of the twisted pair cable in 120 ohms, then it's
> done. All the chip does is TTL/CMOS to differential Tx & Rx.
>
> I bought some surplus DS3695A RS485/RS422 half-duplex transceivers a
> few days ago for US30c each, but they draw over 27 mA, idling, - a
> MAX485 gets by on 300 uA, though it'll only do 2.5 Mb/s. The
> SN65HVD485 will do 10 Mb/s on long lines, and draw 1 to 2 mA. (They
> may be the one Jon likes?)
>
> Just watch pinout, driver enable logic, and whether it's full/half
> duplex. The former has separate Tx & Rx cables (4 wires) vs 2 wires.
>
> Incidentally, it's the RS485 which is multipoint - just in case you
> want that, and go to put plastic down.
>
> Erik
>
The ones I bought to play with are usb on one end, and 3 terminal on the 
other.  Bought them at the same time I bought that clone vfd, paying 
about $3 ea at the time, only to find when I took it apart, that the 
footprint for the seriel connection was totally absent from any of its 
boards.  So I'm running it directly with a spinx1, which is receiving a 
PDM signal from the 7i90.  Control works great until nearly 200hz, but 
the motor inductance is so high its drawing under an amp/phase at 200 
hz, and the torque is of course vanishingly small. I'd guess under 
cutting loads, 120-140hz is about maximum.  I'm sure I don't have it 
well tuned yet, the lf cutoff at 15 hz seems too high as the start is 
pretty brutal.  With the clamps on the chuck pulled up tight so I can't 
unscrew the chuck, I can have it doing 100 spindle revs using the lowest 
belt position, type m4 to reverse, and its doing that same 100 revs in 
reverse less than a second later, wash, rinse, repeat going back to m3.

My target is minimum overshoot for rigid tapping. I have some hal stuff I 
can watch with a halmeter, tells me how many encoder counts it 
overshoots so I can set the g33.1 params to not hit the bottom of the 
blind hole & break the tap. Getting more familiar with pyvcp, I'll 
probably add a number box to the gui at some point. I'd like it to 
display the distance, but the k value fed to the g33.1 hasn't been found 
so I can multiply it and convert the encoder counts into actual 
overshoot distance traveled.  Best I can display might be degrees turned 
fwd since the reversal was given.  I freeze that peak reading until the 
next peck if using a peck cycle.

Sounds like if I buy some more rs422 stuffs, they ought to be based on 
the SN65HVD485 chip. I'll be on the lookout. I am in favor of any 
isolation from the noise I can get even if my current "lashup" is 
working well. But on ebay its opto and slow and expen$ive, or usb and a 
5 dollar bill. And those for sure aren't isolated. Or am I looking with 
the wrong search terms? URL for something like you are writing about 
plz.

Doing an experiment this day, might take a while. I managed to find the 
root of the card on the pi, and with a terrabyte hd plugged into the pi, 
cloned the one bootable card I have left to a 32Gb file on the hd.  I 
just brought a dead card, one of my readers, and that drive in here and 
plugged it into my usb tree, and dd is now happily writing that 32Gb 
image to a card that won't boot. Since the hd had an un-expanded 
filesystem install of raspian jessie on it, I first had to find a way, 
using the tools available on the pi, to expand the / filesystem from 
3.2Gb to 850Gb, and do it without losing any data. Between parted and 
resize2sf, I did appear to get it done.  If it writes at the usual 4.5 
megabytes/second, it will be done about midnight. :(

Cheers Erik, 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)
Genes Web page 

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Re: [Emc-users] about to give up on the pi's

[Chris Albertson]

Why is this so hard and expensive?  I view this question as a huge business
opportunity.  The cost and time involved in setting up a CNC system is MUCH
more than it should be.  Fix that problem and you'll be rich,The cost
could be reduced by maybe a factor of 8x.  Customers would be happy to see
a 4X reduction and you pocket the difference.

I am in my other hobby building robots.  It is just like CNC, really except
more axis and the motions are not pre-programed.

So on my desk right now are four DC motors with quadrature encoders.  They
are literally strapped to a bread board. I'm driving them with about $15
worth of electronics.  I'm doing motion planning and using ultrasonic
"limit switches"   It needn't be expensive.   Machine tools electronics
tend to be expensive only because people say "What the heck it's a $40,000
mill what does $2,000 worth of electronics add to the total cost?"   But
when you look at what you really need, a micro controller and some 10 cent
MOSFET switches it comes to under $20.

Part of the cost comes from the fact that we (especially those building up
systems from LinuxCNC/Machinekit) are using a set of lego blocks that don't
match.  Some blocks of square bumps and round hole and they don't lock
together so we spend time making adapters.   For example your computer
makes step and direction pulses but a bipolar stepping motor wants to see
voltages on it's four lead wires.   Why not have the computer computer the
voltages?

That said if you can bill customers at an hourly rate it is well worth
$2,000 or more to get the project moved forward and working by a few days.
  But a hobbyist is not turning away one hour of billable time for every
hour he fusses with his mill.

So, if this is a hobby and some part is expensive, skip it.  There are
always lower cost DIY alternatives.  You can trade cost for time.   Or in
my case I care a lot about size rune weight and power

An example.   Decoding quadrate signals.  All of the ARM chips made by ST
Micro have quadrature decoding hardware on-chip.  Typically four of more
sets.  These will completely solve the problem in hardware and the chips
cost under $3, or $13 if you buy them on a usable PCB that has herders, USB
connectors and so on.  Mesa boards cost about $100 give or take but you can
buy the same FPGA on a generic brand board for $13.What happens is that
when it is marketed as a machine tool component the price goes up by a
factor of at least 8X.

One should be able to build an integrated machine controller for about $150
that does visualization and controls four motor axis.  The visualization
and controls could live on a iPad or phone and the real time control on a
small uP or FPGA.  A modern tablet or phone is more then enough to run
Machine kit or the like and a $3 ARM M4 chip can do real-time enough for a
multi-axis industrial machine.

Such a product would be "disruptive" in the marketplace.


An example of someone who is set to make a mint in the 3D printer industry
has come up with a way to reduce the cost and complexity by about 4X.
First, the controller is a normal cell phone that you lay on your desk face
up.  The printer is stacked over the phone.  The communication path is the
light on the cellphone's screen.   An LCD screen is a VERY high bandwidth
channel. and moving the "brains" out or your product saves the cost if
providing the "brains".   Some other cost saving features are using just
one motor rather then the normal three motors and making the unit from
injection molded plastic rather than machined metal.   They can retail tiny
size printer for about $100.

Point is that there is a huge opportunity every thine you see something
that is more complex and expensive than it needs to be.   Building a CNC
machine is 100% full into this category.

Uber of course was another example. Why place a complex taxi meter in a
taxi cab when GPS software can compute the distance and time?   Why hire a
dispatch office when electronic messaging can do the job with no humans.
Why even buy taxi cabs when every one of your employees already owns a car?
  Why handle cash and credit cards when we can do electronic billing? They
got the cost down to nearly zero and they pocket most of the savings.




On Wed, May 3, 2017 at 7:28 PM, Gene Heskett  wrote:

> On Wednesday 03 May 2017 21:41:34 Jon Elson wrote:
>
> > On 05/03/2017 02:22 PM, Gene Heskett wrote:
> > > Greetings;
> > >
> > > What x86 board, suitably small but not that outpriced yudoo thingy,
> > > will run linuxcnc well AND can do the spi thing?
> > >
> > > Cheers, Gene Heskett
> >
> > Well, the various versions of the Beagle Bone run the
> > Machinekit fork of LinuxCNC fairly well.
> > The Bone has a lot more I/O available, including hardware
> > SPI interfaces.
> >
> > I don't know any X86 boards that have built-in SPI available
> > externally.
> >
> > Jon
> >
> The killer in the beaglebone soup is the cost of the "capes". You've over
> $200 plus psu's etc before it can

Re: [Emc-users] Google Docs Scam

[TJoseph Powderly]

decent info
http://www.tomsguide.com/us/google-docs-phishing-scam,news-25018.html

anybody get email from me?
report says everyone ion my email add ook would get the mail
i dont think i opened it... it looked suspicious

mine was from S.

tomp tjtr33

On Thu, May 4, 2017 at 5:37 PM, TJoseph Powderly  wrote:

> ooops, firefox cookies were enabled, BUT theres also thunderbird's 'accept
> cookies'
> great, now back to unresponsive google signin dialog inside thunderbird
> free advise to all tbird users with gmail addresses
> save all your email
> Dont just change pswd.
> Dont uninstall tbird.
> wait for some better news from google,
> some succesful news.
> tomp tjtr33
>
> On Thu, May 4, 2017 at 5:27 PM, TJoseph Powderly  wrote:
>
>> still cant log in under thunderbird. dialog did change to
>> """
>>
>> You've reached this page because we have detected that cookies are
>> disabled in your browser. The page you attempted to load cannot display
>> properly if cookies are disabled.
>>
>> Please enable cookies 
>> and retry the operation or go back in your browser.
>>
>> """
>> cookies have been enabed per the link in the message, system cold booted
>> and the story remains the same.
>> AND
>> i can use web gmail without problems ( i are writing this now arent i? )
>> tomp tjtr33
>>
>>
>
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Re: [Emc-users] about to give up on the pi's

[Przemek Klosowski]

Just to further confuse the matters, here's another ARM board: it's a
BeagleBone version specially designed for robotics/machine control:

http://makezine.com/product-review/beaglebone-blue/?utm_source=facebook&utm_medium=social&utm_campaign=digikey&utm_term=boards%20guide&utm_content=beaglebone%20blue

On Wed, May 3, 2017 at 3:22 PM, Gene Heskett  wrote:

> Greetings;
>
> What x86 board, suitably small but not that outpriced yudoo thingy, will
> run linuxcnc well AND can do the spi thing?
>
> 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)
> Genes Web page 
>
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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Re: [Emc-users] touch screen calibration assistance please

[Jan Bos]

Yes, it shows up as an Egalaxy touch, there are actually 2 Egalaxy touch
devices listed. I am on Debian so things are slightly different, previously
on Ubuntu I could use the drivers and calibration software provided with
the screens but they wont work on Debian.
As I mentioned, I got it to work but the calibration is not that each time
the same, I can see after a reboot that it has changed a little and after
several reboots it changes again a little but never enough to have to
recalibrate. It stays within the acceptable and usable range.

Its working thanks to all your help and that's all that matters to me now,
on the real problems now like a coffee maker that blows the fuse when wakes
up from stand-by.

G21

On Thu, May 4, 2017 at 7:00 PM, giorgio foga  wrote:

> sorry is an egalax touch?? you are on ubuntu or debian?
>
>
> Ik you have kernel > of 2.6 actually on egalax drive is not need to write
> the calibration.conf file ... there are a tool for these  only you need
> to add usbtouch SO drive on blacklist 
>
> I think is the same with elo touch...
>
>
> I you work on MS I'm not able to help
>
>
> regards
>
> giorgio
>
>
> 
> Da: Jan Bos 
> Inviato: mercoledì 3 maggio 2017 06.06
> A: Enhanced Machine Controller (EMC)
> Oggetto: Re: [Emc-users] touch screen calibration assistance please
>
> Thanks everybody for hanging in there with me trying to figure this thing
> out.
>
> I ended up with calibration values as follows:
> Option  "Calibration""2025  27  125  1950"  in the 99-calibration.conf
>
> This gets my touch point within 1mm of where I actually touch the screen
> with a stylus. I also can get to the edges of the screen on all sides and
> all axis are in the correct direction.
>
> Not sure if this is a multi-touch screen, it actually came as a Windows
> Industrial PC where the PC is build into the screen and forms one unit.  I
> can drag on the screen and actually select files like that, it forms a
> 'box' around the files when I drag diagonally over the screen. Touch
> response is good also, single click and double click work fine and can be
> tweaked also.
>
> Works fine with Gomoccapy in full screen.
>
> On to the next challenge.
>
> Thanks everybody for your help and patience.
>
> Jan.
>
> On Wed, May 3, 2017 at 10:51 AM, Stuart Stevenson 
> wrote:
>
> > Get some sleep. You will think better in the morning. I calibrated mine
> but
> > don't remember how. I will check in the morning.
> > Regarding the two touch screens is it possible you have a multi-touch
> > screen?
> >
> > On May 2, 2017 3:30 PM, "John Thornton"  wrote:
> >
> > And I know the same thing, I made a script to load the file after
> > testing...
> >
> > JT
> >
> >
> > On 5/2/2017 1:39 PM, andy pugh wrote:
> > > It is possible to calibrate the screen iteratively by changing the
> > > numbers by hand. Don't ask me how I know.
> >
> >
> > 
> > --
> > Check out the vibrant tech community on one of the world's most
> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> Emc-users Info Page - SourceForge listinfo/emc-users>
> lists.sourceforge.net
> This list is for users of the Enhanced Machine Controller (EMC). Topics
> include how to obtain, install, configure, and use EMC, as well as other
> general EMC related ...
>
>
> > 
> > --
> > Check out the vibrant tech community on one of the world's most
> > engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> Emc-users Info Page - SourceForge listinfo/emc-users>
> lists.sourceforge.net
> This list is for users of the Enhanced Machine Controller (EMC). Topics
> include how to obtain, install, configure, and use EMC, as well as other
> general EMC related ...
>
>
> >
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
> Emc-users Info Page - SourceForge listinfo/emc-users>
> lists.sourceforge.net
> This list is for users of the Enhanced Machine Controller (EMC). Topics
> include how to obtain, install, configure, and use EMC, as well as other
> general EMC related ...
>
>
> -

Re: [Emc-users] Google Docs Scam

[Mark]

On 05/04/2017 06:37 AM, TJoseph Powderly wrote:
> ooops, firefox cookies were enabled, BUT theres also thunderbird's 'accept
> cookies'
> great, now back to unresponsive google signin dialog inside thunderbird
> free advise to all tbird users with gmail addresses
> save all your email
> Dont just change pswd.
> Dont uninstall tbird.
> wait for some better news from google,
> some succesful news.
> tomp tjtr33


Been using Thunderbird with Gmail for years.  Changed passwords a few 
times too.  Never had that kind of a problem.  Sure it isn't something 
like a firewall issue not allowing an acknowledgement through?  Or maybe 
a typo in the password?  Try reseting your password again.

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Re: [Emc-users] about to give up on the pi's

[andy pugh]

On 4 May 2017 at 03:29, Chris Albertson  wrote:
> You'd get the best bandwidth by using RS422 but the cost is higher because
> you'd need the intel PC and the serial and graphic cards.

You would also need to Hostmot2 driver layer for serial, and there isn't one.

The 7i90 can connect to LinuxCNC with the parport now, using existing drivers.
And it is perfectly fast enough for the job at hand. (I certainly
never noticed any lack of bandwidth with my 7i43)

-- 
atp
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designed for the especial use of mechanical geniuses, daredevils and
lunatics."
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Re: [Emc-users] Buildbot Jessie RTAI

[giorgio foga]

... is the same if try to test it on ubuntu 16 and rtai5.0-test2 ?


giorgio



Da: Sebastian Kuzminsky 
Inviato: giovedì 27 aprile 2017 23.06
A: Enhanced Machine Controller (EMC)
Oggetto: Re: [Emc-users] Buildbot Jessie RTAI

On 04/27/2017 01:18 PM, Todd  Zuercher wrote:
> Is Buildbot ever going to have new builds for a Jessie RTAI kernal?

As soon as a bugfree RTAI kernel for Jessie exists.


> For a short time there were, then it was discovered that it was
> crashing the sytem, and shut down. Is any effort being made to try to
> fix it, either a new kernel build or figuring out why the other one
> didn't work?

The problem that prevented us from shipping RTAI 5.0-test2 on Linux 4.1
for Debian Jessie still exists in the RTAI code.

The RTAI developers are aware of it but no fix has been found as of 2017
April 12.

I'm not currently working on fixing this problem.

Anyone who is interested in this platform is welcome to help in
debugging it.


--
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Re: [Emc-users] touch screen calibration assistance please

[giorgio foga]

sorry is an egalax touch?? you are on ubuntu or debian?


Ik you have kernel > of 2.6 actually on egalax drive is not need to write the 
calibration.conf file ... there are a tool for these  only you need to add 
usbtouch SO drive on blacklist 

I think is the same with elo touch...


I you work on MS I'm not able to help


regards

giorgio



Da: Jan Bos 
Inviato: mercoledì 3 maggio 2017 06.06
A: Enhanced Machine Controller (EMC)
Oggetto: Re: [Emc-users] touch screen calibration assistance please

Thanks everybody for hanging in there with me trying to figure this thing
out.

I ended up with calibration values as follows:
Option  "Calibration""2025  27  125  1950"  in the 99-calibration.conf

This gets my touch point within 1mm of where I actually touch the screen
with a stylus. I also can get to the edges of the screen on all sides and
all axis are in the correct direction.

Not sure if this is a multi-touch screen, it actually came as a Windows
Industrial PC where the PC is build into the screen and forms one unit.  I
can drag on the screen and actually select files like that, it forms a
'box' around the files when I drag diagonally over the screen. Touch
response is good also, single click and double click work fine and can be
tweaked also.

Works fine with Gomoccapy in full screen.

On to the next challenge.

Thanks everybody for your help and patience.

Jan.

On Wed, May 3, 2017 at 10:51 AM, Stuart Stevenson  wrote:

> Get some sleep. You will think better in the morning. I calibrated mine but
> don't remember how. I will check in the morning.
> Regarding the two touch screens is it possible you have a multi-touch
> screen?
>
> On May 2, 2017 3:30 PM, "John Thornton"  wrote:
>
> And I know the same thing, I made a script to load the file after
> testing...
>
> JT
>
>
> On 5/2/2017 1:39 PM, andy pugh wrote:
> > It is possible to calibrate the screen iteratively by changing the
> > numbers by hand. Don't ask me how I know.
>
>
> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
Emc-users Info Page - 
SourceForge
lists.sourceforge.net
This list is for users of the Enhanced Machine Controller (EMC). Topics include 
how to obtain, install, configure, and use EMC, as well as other general EMC 
related ...


> 
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> ___
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> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
Emc-users Info Page - 
SourceForge
lists.sourceforge.net
This list is for users of the Enhanced Machine Controller (EMC). Topics include 
how to obtain, install, configure, and use EMC, as well as other general EMC 
related ...


>
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Re: [Emc-users] Google Docs Scam

[TJoseph Powderly]

ooops, firefox cookies were enabled, BUT theres also thunderbird's 'accept
cookies'
great, now back to unresponsive google signin dialog inside thunderbird
free advise to all tbird users with gmail addresses
save all your email
Dont just change pswd.
Dont uninstall tbird.
wait for some better news from google,
some succesful news.
tomp tjtr33

On Thu, May 4, 2017 at 5:27 PM, TJoseph Powderly  wrote:

> still cant log in under thunderbird. dialog did change to
> """
>
> You've reached this page because we have detected that cookies are
> disabled in your browser. The page you attempted to load cannot display
> properly if cookies are disabled.
>
> Please enable cookies 
> and retry the operation or go back in your browser.
>
> """
> cookies have been enabed per the link in the message, system cold booted
> and the story remains the same.
> AND
> i can use web gmail without problems ( i are writing this now arent i? )
> tomp tjtr33
>
>
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Re: [Emc-users] Google Docs Scam

[TJoseph Powderly]

still cant log in under thunderbird. dialog did change to
"""

You've reached this page because we have detected that cookies are disabled
in your browser. The page you attempted to load cannot display properly if
cookies are disabled.

Please enable cookies 
and retry the operation or go back in your browser.

"""
cookies have been enabed per the link in the message, system cold booted
and the story remains the same.
AND
i can use web gmail without problems ( i are writing this now arent i? )
tomp tjtr33
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Re: [Emc-users] Google Docs Scam

[Eric Taada]

http://gizmodo.com/a-huge-and-dangerously-convincing-google-docs-phishin-1794888973
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Re: [Emc-users] Google Docs Scam

[Lester Caine]

On 04/05/17 07:22, Marcus Bowman wrote:
> This scam is flagged up on the BBC news site this morning.
> http://www.bbc.co.uk/news/business-39798022

Curious
> Google said the spam campaign affected "fewer than 0.1%" of Gmail users.

I got several emails but did not see any indication it was FROM gmail
users. It just looked like the usual problem of someone posting a viral
document this time via google docs and attempting to get us to open it.
If your set up properly then macro's in documents should never be
activated ;)

-- 
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-
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L.S.Caine Electronic Services - http://lsces.co.uk
EnquirySolve - http://enquirysolve.com/
Model Engineers Digital Workshop - http://medw.co.uk
Rainbow Digital Media - http://rainbowdigitalmedia.co.uk

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