Re: [Emc-users] linuxcnc on raspberry pi 3

[Abdul Rahman Riza]

Yes Please, Sir..

linuxcnc under jessie for arm still alive in the future. Its best if 
special image for raspi 3

Otherwise linuxcnc for armhf deb under wheezy for raspi 3 image very useful

Riza


On 02/08/2017 05:39 AM, Sebastian Kuzminsky wrote:
> On 02/07/2017 03:11 PM, W. Martinjak wrote:
>> On 2017-02-07 13:46, Abdul Rahman Riza wrote:
>>> I want to build 3 axis vertical milling cnc for wood using gantry, my 
>>> question before wrongly purchased component is:
>>>
>>>1.  What is the best compatible breakout board using raspberry pi3 ?
>>>2.  Is there any list of stepper motor compatible with raspberry pi 3 
>>> using linuxcnc?
>> As Gene mentioned, there is a hal driver for the mesa 7i90.
>> http://www.linuxcnc.org/docs/devel/html/man/man9/hm2_rpspi.9.html
>>
>>
>> But unfortunately there is no golden future for arm based boards in 
>> linuxcnc, because the core developer does not support the arm platform any 
>> more.
> I'm not sure what you mean by that.
>
> We still build armhf debs for Wheezy, it's just my Jessie armhf
> buildslave that died.
>
> Feel free to pitch in and donate a reliable, fast armhf build machine to
> the linuxcnc buildbot if this is important to you.
>
>


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Re: [Emc-users] linuxcnc on raspberry pi 3

[TJoseph Powderly]

Abdul hello
we do not think the image you talk of is linuxcnc
it it different control system that we do not use
it is 'grbl'
please read the documents on the protroneer websites
like here
http://wiki.protoneer.co.nz/Raspberry_Pi_CNC_-_Quick_Start_Guide
where it states
"""

  * Raspberry Pi systems
  * Arduino Hardware / Serial Interfaces
  * Basic computer skills
  * GRBL g-code interpreter


"""
i do NOT see linuxcnc mentioned anywhere on thier site
only you add that word
we do not use grbl and cannot advise you how to use it or images that 
supply it

sorry but the world is complex and computers are picky
you have to know the question to understand the answer .

'42'

tomp tjtr33
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Re: [Emc-users] linuxcnc on raspberry pi 3

[Abdul Rahman Riza]

I don't get it. What is the use of linuxcnc-raspberry image from 
protoneer then?

if not.. how to install linuxcnc in raspberry pi3 ?


On 02/21/2017 05:30 PM, andy pugh wrote:
> On 20 February 2017 at 23:46, Abdul Rahman Riza  wrote:
>> do you mean rpi3 won't work as cnc controller? I installed image from 
>> protoneer successfully .
> What makes you think that the protoneer image has any connection at
> all to LinuxCNC?
>
> (As far as I can tell, it doesn't)
>

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Re: [Emc-users] linuxcnc on raspberry pi 3

[andy pugh]

On 20 February 2017 at 23:46, Abdul Rahman Riza  wrote:
> do you mean rpi3 won't work as cnc controller? I installed image from 
> protoneer successfully .

What makes you think that the protoneer image has any connection at
all to LinuxCNC?

(As far as I can tell, it doesn't)

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Re: [Emc-users] linuxcnc on raspberry pi 3

[Abdul Rahman Riza]

Thank you Sir,

What is your opinion if I am using this break-out board for my rpi3 
http://wiki.zentoolworks.com/index.php/Zen_Toolworks_Stepper_Motor_Driver_Breakout_Board%285_Axis_Output_with_on_board_spindle_relay%29

mesa 7i90. is not available in my country

do you mean rpi3 won't work as cnc controller? I installed image from protoneer 
successfully .

Riza

On 02/08/2017 05:11 AM, W. Martinjak wrote:

On 2017-02-07 13:46, Abdul Rahman Riza wrote:


I want to build 3 axis vertical milling cnc for wood using gantry, my question 
before wrongly purchased component is:

  1.  What is the best compatible breakout board using raspberry pi3 ?
  2.  Is there any list of stepper motor compatible with raspberry pi 3 using 
linuxcnc?



As Gene mentioned, there is a hal driver for the mesa 7i90.
http://www.linuxcnc.org/docs/devel/html/man/man9/hm2_rpspi.9.html


But unfortunately there is no golden future for arm based boards in linuxcnc, 
because the core developer does not support the arm platform any more.

https://forum.linuxcnc.org/27-driver-boards/32183-is-raspberry-mesa-7i92-possible#86090
http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23linuxcnc-devel/2017-01-08.html#11:47:40

One smells the bad mood in this thread



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Re: [Emc-users] linuxcnc on raspberry pi 3

[Gene Heskett]

On Wednesday 08 February 2017 10:49:02 W. Martinjak wrote:

> On 2017-02-08 15:45, Gene Heskett wrote:
> > Thats not an armhf, Andy, thats intels latest tiny & low power
> > consumption board, but it speaks x86, not armhf.
>
> He meant this one:
>
> http://shop.udoo.org/usa/quad-dual/udoo-quad.html

Thats better, but they wouldn't let me see it till I told them where I 
was on this ball of rock.

> http://www.udoo.org/docs/Introduction/Introduction.html

The original link from yesterdays msg had a big X86 logo on it. Looked 
exactly the same.  And same price. Don't their marketing jerks know what 
the heck it is they are selling?

But thats a slow arm at 1GHz, the pi-3b runs faster at 1.2GHz and I've 
heard of 1.7 when its unlocked, which I haven't done. And as far as 
stability, I've had one or two instances of what smells like an OOM 
situation, but zero crashes in a couple months of mostly 24/7 operation.

Cheers, Gene Heskett
-- 
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-Ed Howdershelt (Author)
Genes Web page 

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Re: [Emc-users] linuxcnc on raspberry pi 3

[W. Martinjak]

On 2017-02-08 15:45, Gene Heskett wrote:
> Thats not an armhf, Andy, thats intels latest tiny & low power 
> consumption board, but it speaks x86, not armhf.

He meant this one:

http://shop.udoo.org/usa/quad-dual/udoo-quad.html
http://www.udoo.org/docs/Introduction/Introduction.html

-- 
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nur ihre Gegner sterben nach und nach"

Max Planck


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Re: [Emc-users] linuxcnc on raspberry pi 3

[andy pugh]

On 8 February 2017 at 14:27, W. Martinjak  wrote:
> What keeps you from using SPI?

Is there an SPI link between the processors?

This has been written since I stopped playing with mine, but uses a
serial link, and I was told on their IRC that the serial link is
USB-to-serial.

http://www.udoo.org/tutorial/interaction-between-linux-and-arduino-on-udoo/

-- 
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designed for the especial use of mechanical geniuses, daredevils and
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Re: [Emc-users] linuxcnc on raspberry pi 3

[Gene Heskett]

On Wednesday 08 February 2017 09:04:25 andy pugh wrote:

> On 7 February 2017 at 22:39, Sebastian Kuzminsky  
wrote:
> > Feel free to pitch in and donate a reliable, fast armhf build
> > machine to the linuxcnc buildbot if this is important to you.
>
> I am (maybe surprisingly) fuzzy on what constitutes Armhf. But I am
> wondering if the Udoo Quad might be a good choice, as it has a nice
> big heat-sink:
> http://shop.udoo.org/usa/quad-dual.html?___from_store=other=no

Thats not an armhf, Andy, thats intels latest tiny & low power 
consumption board, but it speaks x86, not armhf. It would I think. make 
a heck of a controller board since the top of the list does have 76 
gpio's, so one wouldn't need a bob to use it.

> I got one with an eye to LinuxCNC use, but it turned out that the link
> between the Arduino part and Linux part was USB and so not very
> realtimey.
>
> (This doesn't actually make it useless, the PC can drive the
> Arduino-shaped IO directly).


Cheers, Gene Heskett
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

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Re: [Emc-users] linuxcnc on raspberry pi 3

[W. Martinjak]

On 2017-02-08 15:04, andy pugh wrote:
> I got one with an eye to LinuxCNC use, but it turned out that the link
> between the Arduino part and Linux part was USB and so not very
> realtimey.

What keeps you from using SPI?

But I think it would be a good joice for the buildbot.
The arduino part could be used as a watchdog and controlling unit for a ups.

-- 
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nur ihre Gegner sterben nach und nach"

Max Planck


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Re: [Emc-users] linuxcnc on raspberry pi 3

[andy pugh]

On 7 February 2017 at 22:39, Sebastian Kuzminsky  wrote:
> Feel free to pitch in and donate a reliable, fast armhf build machine to
> the linuxcnc buildbot if this is important to you.


I am (maybe surprisingly) fuzzy on what constitutes Armhf. But I am
wondering if the Udoo Quad might be a good choice, as it has a nice
big heat-sink:
http://shop.udoo.org/usa/quad-dual.html?___from_store=other=no

I got one with an eye to LinuxCNC use, but it turned out that the link
between the Arduino part and Linux part was USB and so not very
realtimey.

(This doesn't actually make it useless, the PC can drive the
Arduino-shaped IO directly).

-- 
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] linuxcnc on raspberry pi 3

[W. Martinjak]

Hi Jeff!

On 2017-02-08 03:21, Jeff Epler wrote:
> You have misinterpreted my remarks.
>
> I am not against "support[ing] the arm platform".

Yes, my reaction was a little bit hasty.
But it has been triggered by the forum post and some other comments on the 
list..

> My IRC remarks are about the specific situation where the boards that are in
> the buildbot "compile farm" are failing (due to age or thermal issues); when
> the buildbot builds a specific git ref, if any individual system (OS
> distribution × hardware architecture) fails, NONE of the packages are 
> published
> for any distribution or architecture.
>
> So if 1/3 of the time (or whatever it is) the *spurious* build/test failure 
> due
> to bad hardware (which just happened to be ARM hardware), the best response is
> to remove the hardware from the farm until something can be done about it.

And yes, in this context and after the third time reading I understand it in 
the same way.

> Jeff
>

Cheers Matsche

-- 
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nur ihre Gegner sterben nach und nach"

Max Planck


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Re: [Emc-users] linuxcnc on raspberry pi 3

[Gregg Eshelman]

This company has a 4 axis "hat" board for the Raspberry Pi. It uses Pololu 
style stepper drivers or you can get jumper boards for those sockets to use it 
with external drivers. The ebay listing for the external driver jumper boards 
shows how to use pieces of wire in the sockets if you don't feel like spending 
another $5 for a set of the four jumper boards.
http://stores.ebay.com/Protoneer


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Re: [Emc-users] linuxcnc on raspberry pi 3

[Chris Albertson]

On Tue, Feb 7, 2017 at 4:46 AM, Abdul Rahman Riza  wrote:

>
>   1.  What is the best compatible breakout board using raspberry pi3 ?
>

Technically just use some wire.  It works fine.But the Mesa FPGA boards
allow for much faster stepping.
Watch out that the Pi is a 3.3 volt machine.   Do NOT place 5 volts on it's
IO pins.


>   2.  Is there any list of stepper motor compatible with raspberry pi 3
> using linuxcnc?
>

The linuxcnc does not interface to a motor it interfaces to a motor
driver.  The drivers all take "step" and "direction" inputs so any motor
your stepper driver can drive works


>   3.  what is the best touchscreen for linuxcnc using raspberry pi3?
>

Do you really want to try ad use an X11 application on a touch screen.
Get a mouse or trackpad. and buy a "real" monitor that is big enough to see.


>   4.  Is there any basic algorithm flowchart to build cnc?
>

You mean to build up a full CNC system.   Yes.  My rules is do NOT try and
build everything at once.   Build up only the smallest amount and then TEST
it before building the next part.   Even little things like a power
supply.  Testthat under a dummy load, look for noise and heat, then connect
it and check volts and so on again.

Same for steppers and timing belts.  Don't use anything as complex as
LinuxCNC to test a motor.  Build/Make or buy a very simple pulse generator
for motor testing.An Arduino comes in real handy because you can use it
to verify motors and sensors with very simple sketches.

Figure some way to test each sub-system in isolation and do that before you
integrate it into the next larger sib-system


>   5.  is there any cheap and compatible tool changer for raspberry running
> linuxcnc?
>

This is a hard problem.  You will need to design and build it. The simplest
is an LED and a human with a wrench to watch it.

Tormach has a system based on a power drawbar and tool tray.

>
>
>
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Re: [Emc-users] linuxcnc on raspberry pi 3

[Gene Heskett]

On Tuesday 07 February 2017 22:33:15 Phillip Carter wrote:

> On 08/02/17 14:22, Gene Heskett wrote:
> > On Tuesday 07 February 2017 19:18:11 W. Martinjak wrote:
> >> On 2017-02-07 23:39, Sebastian Kuzminsky wrote:
> >>> I'm not sure what you mean by that.
> >>>
> >>> We still build armhf debs for Wheezy, it's just my Jessie armhf
> >>> buildslave that died.
> >>>
> >>> Feel free to pitch in and donate a reliable, fast armhf build
> >>> machine to the linuxcnc buildbot if this is important to you.
> >>
> >> Maybe, but I think PCW's message is clear.
> >> Not much scope for interpretation.
> >>
> >>> "Basically the consumer embedded ARM chips are not a
> >>> "platform" in the same way a x86 PC is a platform
> >>>
> >>> If you really want to use ARM, I would suggest
> >>> Machinekit/Beaglebone "
> >>
> >> And, I do not remember any calls for buildslave donation on the
> >> lists. Nor a discussion about the requirements for the machine.
> >>
> >> Maybe on alpha centauri... ;)
> >
> > Certainly not on this ball of rock & water.
> >
> > But, Seb, now that the subject has been broached, what would you
> > consider good enough for inclusion in the buildbot farm?
> >
> > Cheers, Gene Heskett
>
> I have a Odroid U3 lying around here somewhere, I could donate it to
> the cause if that would help.
>
I have a C2, and a pair of r-pi3b's but one may have a damaged gpio pin.

> Is this 
> wiki page still valid?
>
>
If so, that doesn't look like a showstopper.

> Cheers, Phill
>
>
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Cheers, Gene Heskett
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page 

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Re: [Emc-users] linuxcnc on raspberry pi 3

[Phillip Carter]

On 08/02/17 14:22, Gene Heskett wrote:
> On Tuesday 07 February 2017 19:18:11 W. Martinjak wrote:
>
>> On 2017-02-07 23:39, Sebastian Kuzminsky wrote:
>>> I'm not sure what you mean by that.
>>>
>>> We still build armhf debs for Wheezy, it's just my Jessie armhf
>>> buildslave that died.
>>>
>>> Feel free to pitch in and donate a reliable, fast armhf build
>>> machine to the linuxcnc buildbot if this is important to you.
>> Maybe, but I think PCW's message is clear.
>> Not much scope for interpretation.
>>
>>> "Basically the consumer embedded ARM chips are not a "platform"
>>> in the same way a x86 PC is a platform
>>>
>>> If you really want to use ARM, I would suggest
>>> Machinekit/Beaglebone "
>> And, I do not remember any calls for buildslave donation on the lists.
>> Nor a discussion about the requirements for the machine.
>>
>> Maybe on alpha centauri... ;)
> Certainly not on this ball of rock & water.
>
> But, Seb, now that the subject has been broached, what would you consider
> good enough for inclusion in the buildbot farm?
>
> Cheers, Gene Heskett

I have a Odroid U3 lying around here somewhere, I could donate it to the 
cause if that would help.

Is this  wiki 
page still valid?


Cheers, Phill


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Re: [Emc-users] linuxcnc on raspberry pi 3

[Gene Heskett]

On Tuesday 07 February 2017 19:18:11 W. Martinjak wrote:

> On 2017-02-07 23:39, Sebastian Kuzminsky wrote:
> > I'm not sure what you mean by that.
> >
> > We still build armhf debs for Wheezy, it's just my Jessie armhf
> > buildslave that died.
> >
> > Feel free to pitch in and donate a reliable, fast armhf build
> > machine to the linuxcnc buildbot if this is important to you.
>
> Maybe, but I think PCW's message is clear.
> Not much scope for interpretation.
>
> >"Basically the consumer embedded ARM chips are not a "platform"
> >in the same way a x86 PC is a platform
> >
> >If you really want to use ARM, I would suggest
> > Machinekit/Beaglebone "
>
> And, I do not remember any calls for buildslave donation on the lists.
> Nor a discussion about the requirements for the machine.
>
> Maybe on alpha centauri... ;)

Certainly not on this ball of rock & water.

But, Seb, now that the subject has been broached, what would you consider 
good enough for inclusion in the buildbot farm? 

Cheers, Gene Heskett
-- 
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 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
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Re: [Emc-users] linuxcnc on raspberry pi 3

[Jeff Epler]

You have misinterpreted my remarks.

I am not against "support[ing] the arm platform".

My IRC remarks are about the specific situation where the boards that are in
the buildbot "compile farm" are failing (due to age or thermal issues); when
the buildbot builds a specific git ref, if any individual system (OS
distribution × hardware architecture) fails, NONE of the packages are published
for any distribution or architecture.

So if 1/3 of the time (or whatever it is) the *spurious* build/test failure due
to bad hardware (which just happened to be ARM hardware), the best response is
to remove the hardware from the farm until something can be done about it.

Jeff

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Re: [Emc-users] linuxcnc on raspberry pi 3

[W. Martinjak]

On 2017-02-08 02:34, Peter C. Wallace wrote:
>> Maybe, but I think PCW's message is clear.
>> Not much scope for interpretation.
>>
>>> "Basically the consumer embedded ARM chips are not a "platform"
>>>in the same way a x86 PC is a platform
>>>
>>>If you really want to use ARM, I would suggest Machinekit/Beaglebone
>>> "
> Thats just my personal opinion after seeing multple ARM boards come and go

Just like x86 boards.
But saying "Move along, there is nothing to see here" is not just opinion.
In this post you have explicitly advised against using linuxcnc, raspi3 and 
7i90.
It seems the business doing too well.

>
> Also I am not a LinuxCNC developer nor do I play one on TV...
>
>

No clue. I've no TV.
Maybe a whispering advisor?


-- 
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nur ihre Gegner sterben nach und nach"

Max Planck


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Re: [Emc-users] linuxcnc on raspberry pi 3

[Gene Heskett]

On Tuesday 07 February 2017 17:11:39 W. Martinjak wrote:

> On 2017-02-07 13:46, Abdul Rahman Riza wrote:
> > I want to build 3 axis vertical milling cnc for wood using gantry,
> > my question before wrongly purchased component is:
> >
> >   1.  What is the best compatible breakout board using raspberry pi3
> > ? 2.  Is there any list of stepper motor compatible with raspberry
> > pi 3 using linuxcnc?
>
> As Gene mentioned, there is a hal driver for the mesa 7i90.
> http://www.linuxcnc.org/docs/devel/html/man/man9/hm2_rpspi.9.html
>
>
> But unfortunately there is no golden future for arm based boards in
> linuxcnc, because the core developer does not support the arm platform
> any more.

After I've plowed the money into it, and essentially proved
it can work just fine if we pay attention.

> https://forum.linuxcnc.org/27-driver-boards/32183-is-raspberry-mesa-7i
>92-possible#86090
> http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23linuxcnc-devel/2017-0
>1-08.html#11:47:40
>
> One smells the bad mood in this thread

Thats sad to say the least.  I knew there was something in the air but 
couldn't identify it. I hope I didn't pee in his cheerio's. I certainly 
didn't have that in mind.  No chance of wrangling someone out of the 
machine kit crowd?  Is this the end of raspbian then?  Or just the end 
of the RT kernels for it?

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] linuxcnc on raspberry pi 3

[Peter C. Wallace]

On Wed, 8 Feb 2017, W. Martinjak wrote:

> Date: Wed, 8 Feb 2017 01:18:11 +0100
> From: W. Martinjak <mats...@play-pla.net>
> Reply-To: "Enhanced Machine Controller (EMC)"
> <emc-users@lists.sourceforge.net>
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] linuxcnc on raspberry pi 3
> 
> On 2017-02-07 23:39, Sebastian Kuzminsky wrote:
>> I'm not sure what you mean by that.
>>
>> We still build armhf debs for Wheezy, it's just my Jessie armhf
>> buildslave that died.
>>
>> Feel free to pitch in and donate a reliable, fast armhf build machine to
>> the linuxcnc buildbot if this is important to you.
>
> Maybe, but I think PCW's message is clear.
> Not much scope for interpretation.
>
>> "Basically the consumer embedded ARM chips are not a "platform"
>>in the same way a x86 PC is a platform
>>
>>If you really want to use ARM, I would suggest Machinekit/Beaglebone
>> "
>

Thats just my personal opinion after seeing multple ARM boards come and go

Also I am not a LinuxCNC developer nor do I play one on TV...


>
> And, I do not remember any calls for buildslave donation on the lists.
> Nor a discussion about the requirements for the machine.
>
> Maybe on alpha centauri... ;)
>
>
> -- 
> "In der Wissenschaft siegt nie eine neue Theorie,
> nur ihre Gegner sterben nach und nach"
>
> Max Planck
>
>
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Peter Wallace
Mesa Electronics

(\__/)
(='.'=) This is Bunny. Copy and paste bunny into your
(")_(") signature to help him gain world domination.


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Re: [Emc-users] linuxcnc on raspberry pi 3

[W. Martinjak]

On 2017-02-07 23:39, Sebastian Kuzminsky wrote:
> I'm not sure what you mean by that.
>
> We still build armhf debs for Wheezy, it's just my Jessie armhf 
> buildslave that died.
>
> Feel free to pitch in and donate a reliable, fast armhf build machine to 
> the linuxcnc buildbot if this is important to you.

Maybe, but I think PCW's message is clear.
Not much scope for interpretation.

>"Basically the consumer embedded ARM chips are not a "platform"
>in the same way a x86 PC is a platform
>
>If you really want to use ARM, I would suggest Machinekit/Beaglebone
>"


And, I do not remember any calls for buildslave donation on the lists.
Nor a discussion about the requirements for the machine.
 
Maybe on alpha centauri... ;)


-- 
"In der Wissenschaft siegt nie eine neue Theorie,
nur ihre Gegner sterben nach und nach"

Max Planck


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Re: [Emc-users] linuxcnc on raspberry pi 3

[Sebastian Kuzminsky]

On 02/07/2017 03:11 PM, W. Martinjak wrote:
> On 2017-02-07 13:46, Abdul Rahman Riza wrote:
>> I want to build 3 axis vertical milling cnc for wood using gantry, my 
>> question before wrongly purchased component is:
>>
>>   1.  What is the best compatible breakout board using raspberry pi3 ?
>>   2.  Is there any list of stepper motor compatible with raspberry pi 3 
>> using linuxcnc?
>
> As Gene mentioned, there is a hal driver for the mesa 7i90.
> http://www.linuxcnc.org/docs/devel/html/man/man9/hm2_rpspi.9.html
>
>
> But unfortunately there is no golden future for arm based boards in linuxcnc, 
> because the core developer does not support the arm platform any more.

I'm not sure what you mean by that.

We still build armhf debs for Wheezy, it's just my Jessie armhf 
buildslave that died.

Feel free to pitch in and donate a reliable, fast armhf build machine to 
the linuxcnc buildbot if this is important to you.


-- 
Sebastian Kuzminsky

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Re: [Emc-users] linuxcnc on raspberry pi 3

[W. Martinjak]

On 2017-02-07 13:46, Abdul Rahman Riza wrote:
> I want to build 3 axis vertical milling cnc for wood using gantry, my 
> question before wrongly purchased component is:
>
>   1.  What is the best compatible breakout board using raspberry pi3 ?
>   2.  Is there any list of stepper motor compatible with raspberry pi 3 using 
> linuxcnc?

As Gene mentioned, there is a hal driver for the mesa 7i90.
http://www.linuxcnc.org/docs/devel/html/man/man9/hm2_rpspi.9.html


But unfortunately there is no golden future for arm based boards in linuxcnc, 
because the core developer does not support the arm platform any more.

https://forum.linuxcnc.org/27-driver-boards/32183-is-raspberry-mesa-7i92-possible#86090
http://tom-itx.no-ip.biz:81/~tom-itx/irc/logs/%23linuxcnc-devel/2017-01-08.html#11:47:40

One smells the bad mood in this thread

-- 
"In der Wissenschaft siegt nie eine neue Theorie,
nur ihre Gegner sterben nach und nach"

Max Planck


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Re: [Emc-users] linuxcnc on raspberry pi 3

[Gene Heskett]

On Tuesday 07 February 2017 15:52:57 andy pugh wrote:

> On 7 February 2017 at 20:45, Gene Heskett  wrote:
> > Whats not to love?
>
> Months of chasing electrical interference issues?

My own stupid attack Andy. :( A good "star" grounding system handles that 
problem nicely so far. But I failed the plumbers test as I was making 
that one up.  I am assuming others can build a proper star ground as 
they will follow directions better than this ancient C.E.T. did.

But it certainly can be a problem with the speed of the spi bus, and the 
switching motor drivers and power supplies making noise that reaches 
into the 2nd hundred megahertz range, it is hard to keep it out. The epp 
bus out of a parport is around 2 magnitudes slower, so its not nearly 
the problem.

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] linuxcnc on raspberry pi 3

[W. Martinjak]

On 2017-02-07 21:52, andy pugh wrote:
> On 7 February 2017 at 20:45, Gene Heskett  wrote:
>> Whats not to love?
> Months of chasing electrical interference issues?
>

Ah, it's killjoy time.


-- 
"In der Wissenschaft siegt nie eine neue Theorie,
nur ihre Gegner sterben nach und nach"

Max Planck


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Re: [Emc-users] linuxcnc on raspberry pi 3

[andy pugh]

On 7 February 2017 at 20:45, Gene Heskett  wrote:
> Whats not to love?

Months of chasing electrical interference issues?

-- 
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] linuxcnc on raspberry pi 3

[Gene Heskett]

On Tuesday 07 February 2017 10:32:39 Greg Bernard wrote:

> I believe that distribution is for GRBL, not LinuxCNC.Probably the
> Protoneer BOB would be most
> appropriate. +
>++ "Anyone who believes exponential growth can go
> on forever in a finite world is either a madman or an economist."
> -Kenneth Boulding, economist
> Corporations are NOT people and money is NOT speech!

That is LinuxCNC that I am running on an R-pi 3b, with a $60 Mesa 
7i90HD "bob", but the pi doesn't have a "parport" per sei. The 7i90 can 
be driven via a full epp parport, but the spi bus is faster, so the pi's 
best interface to talk to the 7i90 is rpspi.so, designed to drive the 
7i90 with any spi based firmware loaded into it.  This interface runs at 
32 megabits when its exchanging data, but the linux spi module is not 
functional at that speed. Mr Martinjak (sp?) has that driver.

I have some steppers driving an 11x36 Sheldon lathe, and I'll still have 
about 45 pins of uncommitted i/o left by the  time I get the rest of the 
home & limit switches installed.

Whats not to love? $35 for the pi, $60 for the 7i90, and less than a $20 
for a SpinX1 to run the VFD if you have one. If you want to thread, then 
you'll have to make and hook up, a spindle encoder. With a ferrous metal 
bull gear on the spindle, thats a bit of alu made in a curve that 
matches the gear diameter to hold 3ea, ATS667 hall effect devices about 
2mm from the gear teeth, with some means to vary the sideways separation 
of one of them for the best quadrature signal on a dual trace scope, or 
even on the halscope thats part of the LCNC install.  That gives you the 
ability to thread at any pitch your threading tool can handle. Metric, 
USS, SAE, Whitworth,,... Its all math in the gcode, the machine doesn't 
care if its in snickerdoodles as long as it can translate it to mm's, 
inches or furlongs.

2 of them generate the quadrature timed s/b signals as the gear teeth go 
by, and you glue a piece of a steel screw whose tip is in line with a 
tooth on the gear and that ATS667 is mounted off  the edge of the gears 
teeth so it only trips on the passing screw, and thats used as the once 
per turn index signal  Your time to make it is way more than the cost of 
the ATS667's.

In my case, the gear has 60 teeth, and every edge is a time reference, so 
thats 240 known places, or a pulse every 1.5 degrees the gear turns.  

Thats more than accurate enough to cut some very precise threads, at any 
tpi you want.

My small mill has some round insert nuts that I use to take up the end 
play in the ball nut holders of the xy table, no flanges, just bare ball 
nuts. With a conical section on each end of the cage I made to put some 
squeeze on a felt wiper, and no means of locking the adjuster, so I made 
them with 50 tpi threads. Except for taking them up once as the felt 
crushed into shape, they've stayed put.  And what was once a $400 hf toy 
mill now does .001" tolerance carving if the tool is fresh.

>   From: Abdul Rahman Riza <ar.r...@live.com>
>  To: Enhanced Machine Controller (EMC)
> <emc-users@lists.sourceforge.net> Sent: Tuesday, February 7, 2017 6:46
> AM
>  Subject: [Emc-users] linuxcnc on raspberry pi 3
>
> Dear All,
>
> I have successfully installed linuxcnc on raspberry pi 3 using image
> from here
> http://wiki.protoneer.co.nz/Raspberry_Pi_CNC_User_Interface_SD_Card_Im
>age_V3.00
>
> I want to build 3 axis vertical milling cnc for wood using gantry, my
> question before wrongly purchased component is:
>
>   1.  What is the best compatible breakout board using raspberry pi3 ?

Mesa 7i90HD

>   2.  Is there any list of stepper motor compatible with raspberry pi
> 3 using linuxcnc?

You can use any motor and suitable driver for that motor, that is big 
enough to get the job done. Don't use too big a motor as the max speed 
goes down with the size of the motor going up. For a gantry, I'd drift 
toward one of the newer Nema 24 offerings. I just bought an 8 wire that 
is about the size of a 235oz nema 23, but its  a nearly 400oz motor.  

You didn't mention the size but the mass of what you are moving will have 
some effect on the ACCEL settings in the .ini file.

> 3.  what is the best touchscreen for linuxcnc using 
> raspberry pi3? 

Most touch screens I have come in contact with have a slow (9600 baud) 
rs-232 interface, so you'll need a db-9 to usb to make use of a touch 
screen. I have 2 such monitors but am not using then on a machine so 
I'll not comment further.

> 4.  Is there any basic algorithm flowchart to build 
> cnc?

Just install it from the repo with apt, no need to build it. Put this 
line in your /etc/apt/sources.list:

deb http://buildbot.linuxcnc.org/ jessie master-sim

Then
sudo apt install linuxcnc
done, start configuring 

Re: [Emc-users] linuxcnc on raspberry pi 3

[Greg Bernard]

I believe that distribution is for GRBL, not LinuxCNC.Probably the Protoneer 
BOB would be most appropriate. 
+++
"Anyone who believes exponential growth can go on forever in a finite world is 
either a madman or an economist."
        -Kenneth Boulding, economist
Corporations are NOT people and money is NOT speech!

  From: Abdul Rahman Riza <ar.r...@live.com>
 To: Enhanced Machine Controller (EMC) <emc-users@lists.sourceforge.net> 
 Sent: Tuesday, February 7, 2017 6:46 AM
 Subject: [Emc-users] linuxcnc on raspberry pi 3
   
Dear All,

I have successfully installed linuxcnc on raspberry pi 3 using image from here 
http://wiki.protoneer.co.nz/Raspberry_Pi_CNC_User_Interface_SD_Card_Image_V3.00

I want to build 3 axis vertical milling cnc for wood using gantry, my question 
before wrongly purchased component is:

  1.  What is the best compatible breakout board using raspberry pi3 ?
  2.  Is there any list of stepper motor compatible with raspberry pi 3 using 
linuxcnc?
  3.  what is the best touchscreen for linuxcnc using raspberry pi3?
  4.  Is there any basic algorithm flowchart to build cnc?
  5.  is there any cheap and compatible tool changer for raspberry running 
linuxcnc?

Many thanks for you guys help

regards,

Riza
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[Emc-users] linuxcnc on raspberry pi 3

[Abdul Rahman Riza]

Dear All,

I have successfully installed linuxcnc on raspberry pi 3 using image from here 
http://wiki.protoneer.co.nz/Raspberry_Pi_CNC_User_Interface_SD_Card_Image_V3.00

I want to build 3 axis vertical milling cnc for wood using gantry, my question 
before wrongly purchased component is:

  1.  What is the best compatible breakout board using raspberry pi3 ?
  2.  Is there any list of stepper motor compatible with raspberry pi 3 using 
linuxcnc?
  3.  what is the best touchscreen for linuxcnc using raspberry pi3?
  4.  Is there any basic algorithm flowchart to build cnc?
  5.  is there any cheap and compatible tool changer for raspberry running 
linuxcnc?

Many thanks for you guys help

regards,

Riza
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