Re: [Emc-users] Open source CNC architecture

[Chris Albertson]

The best power plugs are those round "powerCON" plugs.  But getting people
to use them will take time.  Their good feature is that both genders have
only plastic parts exposed when unplugged and they can't be put in wrong.
The white version is locking.
https://www.neutrik.com/en/neutrik/products/powercon/powercon-20-a

These were invented by the same people who make the "speakON" speaker
jacks.These are the industry standard for pro audio.


On Tue, Mar 17, 2020 at 5:28 PM Gene Heskett  wrote:

> On Tuesday 17 March 2020 16:55:56 Gregg Eshelman via Emc-users wrote:
>
> > As big as the UK plugs are, with the beefy prongs, I'm surprised they
> > haven't been classified as weapons and banned. ;) One could bean
> > another person real good with one of your extension cords...
> >
> > On Tuesday, March 17, 2020, 10:34:44 AM MDT, andy pugh
> >  wrote:
> >
> >  On Tue, 17 Mar 2020 at 16:18, Rafael Skodlar  wrote:
> > > American standard for power plugs is way better but I don't
> > > recommend to use N for an antenna
> >
> > There are unpolarised olugs in the US.
>
> Yes, and the quicker they go away, the better off we'd be. But we've been
> stuck with the SOB's since the REA came thru in late '45. But I expect
> it will take at least 200 years since that is the plug most lamps come
> with yet.
> >
> > If you want to be super careful use the UK BS1363 plug. You can't put
> > them in the wrong way round. Even if you remove the earth pin from the
> > plug (as the shutters are opened by the earth pin).
> >
> > Of course the UK plug introduces a different danger, they hurt like
> > hell to stand on in the dark.
> >
> > https://www.youtube.com/watch?v=UEfP1OKKz_Q
>
> Not available on this side of the pond.
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> If we desire respect for the law, we must first make the law respectable.
>  - Louis D. Brandeis
> Genes Web page 
>
>
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>


-- 

Chris Albertson
Redondo Beach, California

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Re: [Emc-users] Slow decreased speed/accel after homing

[Leonardo Marsaglia]

Forget all of that about the encoder. The setting of the  OFFSET_AV_RATIO
is what's causing the velocity issues. I forgot that had it too high.
Anyway I didn't expect the limitation without enabling the external offset
pin.

Sorry for all the monologue, but it's 2:00 am here and I'm a little bit
sleepy to function well :).

El mié., 18 mar. 2020 a las 1:55, Leonardo Marsaglia ()
escribió:

> Well now it seems to work ok.
>
> One problem I had was my simulated encoder was working in negative numbers
> at the position output. That happened when I tried to increase the sim
> encoder velocity from 0.1 to 0.5 (I don't know why). Anyway, since my
> offset component for cams isn't ready yet I didn't included reverse
> rotation of the spindle.
>
> Setting the speed to 0.1 again I don't have the negative output and the
> offset output at the component I use to make the cams is ok too. But all of
> this happened with the external offset enable pin on the FALSE state so I
> don't really know why the velocity and acceleration of the axis were
> limited.
>
> It seems strange to me anyway that something like that could cause the
> behaviour but I'm not that into the 2.8.0 version yet. Also I think is not
> a bad thing to share all of this in case this is a bug.
>
>
>
> El mié., 18 mar. 2020 a las 1:44, Leonardo Marsaglia (<
> ldmarsag...@gmail.com>) escribió:
>
>> It seems the external offset OFFSET_AV_RATIO is causing it. But I don't
>> have the external offset enable for any of the axis.
>>
>> Is this a bug?
>>
>> El mié., 18 mar. 2020 a las 1:37, Leonardo Marsaglia (<
>> ldmarsag...@gmail.com>) escribió:
>>
>>> Just for the sake of understanding my max linear velocity is 1
>>> mm/min. (Here we use the dot as thousand separator).
>>>
>>> El mié., 18 mar. 2020 a las 1:34, Leonardo Marsaglia (<
>>> ldmarsag...@gmail.com>) escribió:
>>>
 Hello guys,

 I'm finishing the final simulations and tests before mouting the new
 control into the machine. We're mounting it this friday.

 Everything is working as expected except one thing I just noticed
 trying to jog the axis on rapid.

 The behaviour is the following: When I start LinuxCNC and move the axis
 I get the maximum speed 10.000 mm/min. Once I hit the home buttons for both
 axis (no limits linked yet since I'm testing the config) I get a 1.800
 mm/min max velocity, although all the sliders are in the max velocity just
 as they where before homing. If I try to make a rapid move using MDI the
 same thing happens.

 Do you know what can cause this behaviour? I tried to google similar
 problems but didn't find anything. I'm using the 2.8.0 version of LinuxCNC.

 Thanks as always!

>>>

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Re: [Emc-users] Slow decreased speed/accel after homing

[Leonardo Marsaglia]

Well now it seems to work ok.

One problem I had was my simulated encoder was working in negative numbers
at the position output. That happened when I tried to increase the sim
encoder velocity from 0.1 to 0.5 (I don't know why). Anyway, since my
offset component for cams isn't ready yet I didn't included reverse
rotation of the spindle.

Setting the speed to 0.1 again I don't have the negative output and the
offset output at the component I use to make the cams is ok too. But all of
this happened with the external offset enable pin on the FALSE state so I
don't really know why the velocity and acceleration of the axis were
limited.

It seems strange to me anyway that something like that could cause the
behaviour but I'm not that into the 2.8.0 version yet. Also I think is not
a bad thing to share all of this in case this is a bug.



El mié., 18 mar. 2020 a las 1:44, Leonardo Marsaglia ()
escribió:

> It seems the external offset OFFSET_AV_RATIO is causing it. But I don't
> have the external offset enable for any of the axis.
>
> Is this a bug?
>
> El mié., 18 mar. 2020 a las 1:37, Leonardo Marsaglia (<
> ldmarsag...@gmail.com>) escribió:
>
>> Just for the sake of understanding my max linear velocity is 1
>> mm/min. (Here we use the dot as thousand separator).
>>
>> El mié., 18 mar. 2020 a las 1:34, Leonardo Marsaglia (<
>> ldmarsag...@gmail.com>) escribió:
>>
>>> Hello guys,
>>>
>>> I'm finishing the final simulations and tests before mouting the new
>>> control into the machine. We're mounting it this friday.
>>>
>>> Everything is working as expected except one thing I just noticed trying
>>> to jog the axis on rapid.
>>>
>>> The behaviour is the following: When I start LinuxCNC and move the axis
>>> I get the maximum speed 10.000 mm/min. Once I hit the home buttons for both
>>> axis (no limits linked yet since I'm testing the config) I get a 1.800
>>> mm/min max velocity, although all the sliders are in the max velocity just
>>> as they where before homing. If I try to make a rapid move using MDI the
>>> same thing happens.
>>>
>>> Do you know what can cause this behaviour? I tried to google similar
>>> problems but didn't find anything. I'm using the 2.8.0 version of LinuxCNC.
>>>
>>> Thanks as always!
>>>
>>

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Re: [Emc-users] Slow decreased speed/accel after homing

[Leonardo Marsaglia]

It seems the external offset OFFSET_AV_RATIO is causing it. But I don't
have the external offset enable for any of the axis.

Is this a bug?

El mié., 18 mar. 2020 a las 1:37, Leonardo Marsaglia ()
escribió:

> Just for the sake of understanding my max linear velocity is 1 mm/min.
> (Here we use the dot as thousand separator).
>
> El mié., 18 mar. 2020 a las 1:34, Leonardo Marsaglia (<
> ldmarsag...@gmail.com>) escribió:
>
>> Hello guys,
>>
>> I'm finishing the final simulations and tests before mouting the new
>> control into the machine. We're mounting it this friday.
>>
>> Everything is working as expected except one thing I just noticed trying
>> to jog the axis on rapid.
>>
>> The behaviour is the following: When I start LinuxCNC and move the axis I
>> get the maximum speed 10.000 mm/min. Once I hit the home buttons for both
>> axis (no limits linked yet since I'm testing the config) I get a 1.800
>> mm/min max velocity, although all the sliders are in the max velocity just
>> as they where before homing. If I try to make a rapid move using MDI the
>> same thing happens.
>>
>> Do you know what can cause this behaviour? I tried to google similar
>> problems but didn't find anything. I'm using the 2.8.0 version of LinuxCNC.
>>
>> Thanks as always!
>>
>

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Re: [Emc-users] Slow decreased speed/accel after homing

[Leonardo Marsaglia]

Just for the sake of understanding my max linear velocity is 1 mm/min.
(Here we use the dot as thousand separator).

El mié., 18 mar. 2020 a las 1:34, Leonardo Marsaglia ()
escribió:

> Hello guys,
>
> I'm finishing the final simulations and tests before mouting the new
> control into the machine. We're mounting it this friday.
>
> Everything is working as expected except one thing I just noticed trying
> to jog the axis on rapid.
>
> The behaviour is the following: When I start LinuxCNC and move the axis I
> get the maximum speed 10.000 mm/min. Once I hit the home buttons for both
> axis (no limits linked yet since I'm testing the config) I get a 1.800
> mm/min max velocity, although all the sliders are in the max velocity just
> as they where before homing. If I try to make a rapid move using MDI the
> same thing happens.
>
> Do you know what can cause this behaviour? I tried to google similar
> problems but didn't find anything. I'm using the 2.8.0 version of LinuxCNC.
>
> Thanks as always!
>

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[Emc-users] Slow decreased speed/accel after homing

[Leonardo Marsaglia]

Hello guys,

I'm finishing the final simulations and tests before mouting the new
control into the machine. We're mounting it this friday.

Everything is working as expected except one thing I just noticed trying to
jog the axis on rapid.

The behaviour is the following: When I start LinuxCNC and move the axis I
get the maximum speed 10.000 mm/min. Once I hit the home buttons for both
axis (no limits linked yet since I'm testing the config) I get a 1.800
mm/min max velocity, although all the sliders are in the max velocity just
as they where before homing. If I try to make a rapid move using MDI the
same thing happens.

Do you know what can cause this behaviour? I tried to google similar
problems but didn't find anything. I'm using the 2.8.0 version of LinuxCNC.

Thanks as always!

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Re: [Emc-users] Open source CNC architecture

[Gene Heskett]

On Tuesday 17 March 2020 20:25:30 Gene Heskett wrote:

> On Tuesday 17 March 2020 16:55:56 Gregg Eshelman via Emc-users wrote:
> > As big as the UK plugs are, with the beefy prongs, I'm surprised
> > they haven't been classified as weapons and banned. ;) One could
> > bean another person real good with one of your extension cords...
> >
> > On Tuesday, March 17, 2020, 10:34:44 AM MDT, andy pugh
> >  wrote:
> >
> >  On Tue, 17 Mar 2020 at 16:18, Rafael Skodlar  
wrote:
> > > American standard for power plugs is way better but I don't
> > > recommend to use N for an antenna
> >
> > There are unpolarised olugs in the US.
>
> Yes, and the quicker they go away, the better off we'd be. But we've
> been stuck with the SOB's since the REA came thru in late '45. But I
> expect it will take at least 200 years since that is the plug most
> lamps come with yet.
>
> > If you want to be super careful use the UK BS1363 plug. You can't
> > put them in the wrong way round. Even if you remove the earth pin
> > from the plug (as the shutters are opened by the earth pin).
> >
> > Of course the UK plug introduces a different danger, they hurt like
> > hell to stand on in the dark.
> >
> > https://www.youtube.com/watch?v=UEfP1OKKz_Q
>
> Not available on this side of the pond.
>
Not quite true. plays ok in firefox, but not in konqueror.
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
>
> Cheers, Gene Heskett


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


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Re: [Emc-users] Open source CNC architecture

[Gene Heskett]

On Tuesday 17 March 2020 16:55:56 Gregg Eshelman via Emc-users wrote:

> As big as the UK plugs are, with the beefy prongs, I'm surprised they
> haven't been classified as weapons and banned. ;) One could bean
> another person real good with one of your extension cords...
>
> On Tuesday, March 17, 2020, 10:34:44 AM MDT, andy pugh
>  wrote:
>
>  On Tue, 17 Mar 2020 at 16:18, Rafael Skodlar  wrote:
> > American standard for power plugs is way better but I don't
> > recommend to use N for an antenna
>
> There are unpolarised olugs in the US.

Yes, and the quicker they go away, the better off we'd be. But we've been 
stuck with the SOB's since the REA came thru in late '45. But I expect 
it will take at least 200 years since that is the plug most lamps come 
with yet.
>
> If you want to be super careful use the UK BS1363 plug. You can't put
> them in the wrong way round. Even if you remove the earth pin from the
> plug (as the shutters are opened by the earth pin).
>
> Of course the UK plug introduces a different danger, they hurt like
> hell to stand on in the dark.
>
> https://www.youtube.com/watch?v=UEfP1OKKz_Q

Not available on this side of the pond.
>
> ___
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Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page 


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Re: [Emc-users] Open source CNC architecture

[Gregg Eshelman via Emc-users]

As big as the UK plugs are, with the beefy prongs, I'm surprised they haven't 
been classified as weapons and banned. ;) One could bean another person real 
good with one of your extension cords...

On Tuesday, March 17, 2020, 10:34:44 AM MDT, andy pugh  
wrote:  
 
 On Tue, 17 Mar 2020 at 16:18, Rafael Skodlar  wrote:

> American standard for power plugs is way better but I don't recommend to
> use N for an antenna

There are unpolarised olugs in the US.

If you want to be super careful use the UK BS1363 plug. You can't put
them in the wrong way round. Even if you remove the earth pin from the
plug (as the shutters are opened by the earth pin).

Of course the UK plug introduces a different danger, they hurt like
hell to stand on in the dark.

https://www.youtube.com/watch?v=UEfP1OKKz_Q

  
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Re: [Emc-users] Open source CNC architecture

[Robert Murphy]

Go away you are dangerous and educated above and beyond your ability for 
rational thought.
I’m no longer going to respond to your BS.
Find another place to pretend you have any kind of common sense.
I’m done.

Composed with my Crayons 

>> On 18 Mar 2020, at 03:15, Rafael Skodlar  wrote:
>> 
>> On 2020-03-17 01:30, Robert Murphy wrote:
>> Raf,
>> Get a 7i76e and you are done.
>> Don't scratch your head and touch sensitive components.
> 
> That's just one possibility which depends on how much hair and size you have. 
> Just walking around certain kind of floors you generate static electricity 
> that can kill modern electronics very fast. I have yet to see technicians in 
> IT using anti-static wrist strap.I keep two in my toolbox.
> 
>> What you have said is technically and correct and in all the books,it's
>> even what the teach in tertiary educations when you're working towards
>> your certs.  it's not exactly what I've seen in the field. That's was
>> day in and day out repair EFTPOS terminals, mainboards of pokies and
>> other sundry products by a certain large supplier of EFTPOS equipment.
> 
> When you use a not so common (?) acronym it's nice to spell it out.
> 
>> Even with the latest exercise equipment with all the bells & whistles
>> the biggest issues are failure of output drivers due to lack of
>> mechanical maintenance by owners.
>> Not that I'm advocating working with electronic equipment in a vinyl one
>> piece jump suit with balloons attached.
>> I'm not too sure of the certification status of the RPi for industrial
>> use. Where as there is a variant of the BBB that is.
> 
> It depends on what temperature range components you use and how you build the 
> boards.
> 
> https://thepihut.com/products/italtronic-din-rail-raspberry-pi-model-b-plus-case
> 
> https://revolution.kunbus.com/revolution-pi-series/  pay attention to the 
> diagram on the sides. 12-24V DC. And QR code to find additional information 
> easily. It looks to be very good product IMO, all based on open source. [1]
> 
> [1] And I was told earlier to get lost after I commented on LinuxCNC 
> architecture issues.
> 
> DIN is a German standard I'm aware of since I mixed neutral power line with 
> hot 220V. I built a simple one transistor receiver and used a neutral wire as 
> an antenna. That idea (?) came from something I was reading in the 70s if I 
> remember correctly. One day I connected my detector to "antenna" on the wrong 
> side ;-(
> 
> Anybody used oscilloscope to troubleshoot switching power supplies? Not 
> modern battery powered scope mind you. That was fun.
> 
> Since then I touch unknown circuits with one hand but only if I have good 
> shoes on. We have protective gloves now but that was not available in commie 
> paradise.
> 
> Building radio detector was one step in my way to learn electronics trade. 
> Problem is that stupid plug standards in continental EU allow you to plug 
> single phase power cord two ways.
> 
> American standard for power plugs is way better but I don't recommend to use 
> N for an antenna unless it's an emergency and the whole nation is in kernel 
> panic mode. Oh wait, we are.
> 
> 
> -- 
> Rafael Skodlar
> 
> 
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Re: [Emc-users] Open source CNC architecture

[andy pugh]

On Tue, 17 Mar 2020 at 16:18, Rafael Skodlar  wrote:

> American standard for power plugs is way better but I don't recommend to
> use N for an antenna

There are unpolarised olugs in the US.

If you want to be super careful use the UK BS1363 plug. You can't put
them in the wrong way round. Even if you remove the earth pin from the
plug (as the shutters are opened by the earth pin).

Of course the UK plug introduces a different danger, they hurt like
hell to stand on in the dark.

https://www.youtube.com/watch?v=UEfP1OKKz_Q

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


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Re: [Emc-users] Open source CNC architecture

[Rafael Skodlar]

On 2020-03-17 01:30, Robert Murphy wrote:

Raf,

Get a 7i76e and you are done.

Don't scratch your head and touch sensitive components.


That's just one possibility which depends on how much hair and size you 
have. Just walking around certain kind of floors you generate static 
electricity that can kill modern electronics very fast. I have yet to 
see technicians in IT using anti-static wrist strap.I keep two in my 
toolbox.




What you have said is technically and correct and in all the books,it's
even what the teach in tertiary educations when you're working towards
your certs.  it's not exactly what I've seen in the field. That's was
day in and day out repair EFTPOS terminals, mainboards of pokies and
other sundry products by a certain large supplier of EFTPOS equipment.


When you use a not so common (?) acronym it's nice to spell it out.


Even with the latest exercise equipment with all the bells & whistles
the biggest issues are failure of output drivers due to lack of
mechanical maintenance by owners.

Not that I'm advocating working with electronic equipment in a vinyl one
piece jump suit with balloons attached.

I'm not too sure of the certification status of the RPi for industrial
use. Where as there is a variant of the BBB that is.


It depends on what temperature range components you use and how you 
build the boards.


https://thepihut.com/products/italtronic-din-rail-raspberry-pi-model-b-plus-case

https://revolution.kunbus.com/revolution-pi-series/  pay attention to 
the diagram on the sides. 12-24V DC. And QR code to find additional 
information easily. It looks to be very good product IMO, all based on 
open source. [1]


[1] And I was told earlier to get lost after I commented on LinuxCNC 
architecture issues.


DIN is a German standard I'm aware of since I mixed neutral power line 
with hot 220V. I built a simple one transistor receiver and used a 
neutral wire as an antenna. That idea (?) came from something I was 
reading in the 70s if I remember correctly. One day I connected my 
detector to "antenna" on the wrong side ;-(


Anybody used oscilloscope to troubleshoot switching power supplies? Not 
modern battery powered scope mind you. That was fun.


Since then I touch unknown circuits with one hand but only if I have 
good shoes on. We have protective gloves now but that was not available 
in commie paradise.


Building radio detector was one step in my way to learn electronics 
trade. Problem is that stupid plug standards in continental EU allow you 
to plug single phase power cord two ways.


American standard for power plugs is way better but I don't recommend to 
use N for an antenna unless it's an emergency and the whole nation is in 
kernel panic mode. Oh wait, we are.



--
Rafael Skodlar


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