Re: [Emc-users] Is this LCNC based?

[Chris Albertson]

Many times Google translations from technical Chinese make no sense.
 A simple example I see many times is "pressure" used to mean volts.  This
is a sign that Googel Translate was used.   A bilingual human with an
education in electronics would know to say "volts"  But Google does not
know which interpretation of the character to use.  The problem is that
can't invent new characters, so the same written characters have several
different meanings and you have to know the context to sort it out.

My wife has 8th grade education in Chinese.  Enough to read newspapers,
watch TV and read most fiction.  But if I ask her to look at some data
sheet that is in Chinese, she says "it does not make sense"   It is written
in a way that engineers have to learn.

I think this is one of those cases.  The "circular soft algorithm" is
likely a really bad translation. And it might mean "loop" or "cycle" for
all we know.

They say it runs on Linux.   I doubt anyone would write a CNC controller
from scratch.   What else might it be based on?

BTW, the company also sells a real clean looking "A + B" smiling axis that
has two rotary joints with 50:1 harmonic reduction and stepper motors.
 Who knows how well it works but it looks nice.   Price is too high for me,
I'd rather build one.This is a nice design to copy.  See how the 50:
reduction is integrated with the frame and to bolted to the frame.
amazon.com/Dividing-Rotational-Indexing-Harmonic-Reducing/dp/B09WLCTLCX







On Mon, Jan 9, 2023 at 8:08 PM Thaddeus Waldner  wrote:

> 8) Interpolation Algorithm: S type, circular hard algorithem, circular
> soft algorithm:
>
> I wonder what is meant by interpolation algorithm.
>
> > On Jan 9, 2023, at 9:52 PM, Chris Albertson 
> wrote:
> >
> > Amazon has a turn-keyCNC controller for $480.  This includes the whole
> kit,
> > computer, FPGA, screen BoB and all except for power supply and the
> motors.
> >
> >
> > Question:  Is this based on LCNC?   Seem like it might be   Below is a
> > quote from their web page, I added the bold face.
> >
> >>
> >>   - The DDCS Expert is a *5 axis motion controller for open or close
> >>   stepper and servo systems* with 7" full color display screen. The
> >>   highest output pulse per axis is 1MHz. The users can self-define the
> >>   functional keys. This controller supports multiple spindle mode,
> support
> >>   straight Tool Magazine, gantry type Magazine, disk type magazine. The
> >>   Operation system interface even though very comprehensive, can be
> learned
> >>   in very short time.
> >>
> >>
> >>   - The DDCS Expert numerical control system *adopts the ARM+FPGA design
> >>   framework*. ARM controls the human-computer interface and code
> >>   analysis and the FPGA provides the underlying algorithms and creates
> the
> >>   control pulse. This guarantees reliable control and easy operation.
> >>
> >>
> >>   - *The internal operating system is Linux based.*
> >>
> >>
> > Product:
> amazon.com/Axis-Controller-Handwheel-MPG-Emergency/dp/B09WLDKW53
> > <
> https://www.amazon.com/Axis-Controller-Handwheel-MPG-Emergency/dp/B09WLDKW53?ref_=ast_sto_dp&th=1
> >
> > User Manual:
> > /nvcnc.net/pdf/DDCS%20Expert%20User's%20Manual%20V1%20(Part1)-nvcnc.pdf
> > <
> https://nvcnc.net/pdf/DDCS%20Expert%20User's%20Manual%20V1%20(Part1)-nvcnc.pdf
> >
> >
> >
> >
> > --
> >
> > Chris Albertson
> > Redondo Beach, California
> >
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Chris Albertson
Redondo Beach, California

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Re: [Emc-users] Is this LCNC based?

[Bari]

Their docs link to:   https://www.nvcnc.net/

Not LCNC based but some of their other hardware can run remora

https://forum.linuxcnc.org/18-computer/42276-remora-rpi-software-stepping-using-external-microcontroller-via-spi

On 1/9/23 21:46, Chris Albertson wrote:

Amazon has a turn-keyCNC controller for $480.  This includes the whole kit,
computer, FPGA, screen BoB and all except for power supply and the motors.


Question:  Is this based on LCNC?   Seem like it might be   Below is a
quote from their web page, I added the bold face.




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Re: [Emc-users] Is this LCNC based?

[Thaddeus Waldner]

8) Interpolation Algorithm: S type, circular hard algorithem, circular soft 
algorithm:

I wonder what is meant by interpolation algorithm.

> On Jan 9, 2023, at 9:52 PM, Chris Albertson  wrote:
> 
> Amazon has a turn-keyCNC controller for $480.  This includes the whole kit,
> computer, FPGA, screen BoB and all except for power supply and the motors.
> 
> 
> Question:  Is this based on LCNC?   Seem like it might be   Below is a
> quote from their web page, I added the bold face.
> 
>> 
>>   - The DDCS Expert is a *5 axis motion controller for open or close
>>   stepper and servo systems* with 7" full color display screen. The
>>   highest output pulse per axis is 1MHz. The users can self-define the
>>   functional keys. This controller supports multiple spindle mode, support
>>   straight Tool Magazine, gantry type Magazine, disk type magazine. The
>>   Operation system interface even though very comprehensive, can be learned
>>   in very short time.
>> 
>> 
>>   - The DDCS Expert numerical control system *adopts the ARM+FPGA design
>>   framework*. ARM controls the human-computer interface and code
>>   analysis and the FPGA provides the underlying algorithms and creates the
>>   control pulse. This guarantees reliable control and easy operation.
>> 
>> 
>>   - *The internal operating system is Linux based.*
>> 
>> 
> Product: amazon.com/Axis-Controller-Handwheel-MPG-Emergency/dp/B09WLDKW53
> 
> User Manual:
> /nvcnc.net/pdf/DDCS%20Expert%20User's%20Manual%20V1%20(Part1)-nvcnc.pdf
> 
> 
> 
> 
> -- 
> 
> Chris Albertson
> Redondo Beach, California
> 
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[Emc-users] Is this LCNC based?

[Chris Albertson]

Amazon has a turn-keyCNC controller for $480.  This includes the whole kit,
computer, FPGA, screen BoB and all except for power supply and the motors.


Question:  Is this based on LCNC?   Seem like it might be   Below is a
quote from their web page, I added the bold face.

>
>- The DDCS Expert is a *5 axis motion controller for open or close
>stepper and servo systems* with 7" full color display screen. The
>highest output pulse per axis is 1MHz. The users can self-define the
>functional keys. This controller supports multiple spindle mode, support
>straight Tool Magazine, gantry type Magazine, disk type magazine. The
>Operation system interface even though very comprehensive, can be learned
>in very short time.
>
>
>- The DDCS Expert numerical control system *adopts the ARM+FPGA design
>framework*. ARM controls the human-computer interface and code
>analysis and the FPGA provides the underlying algorithms and creates the
>control pulse. This guarantees reliable control and easy operation.
>
>
>- *The internal operating system is Linux based.*
>
>
Product: amazon.com/Axis-Controller-Handwheel-MPG-Emergency/dp/B09WLDKW53

User Manual:
/nvcnc.net/pdf/DDCS%20Expert%20User's%20Manual%20V1%20(Part1)-nvcnc.pdf




-- 

Chris Albertson
Redondo Beach, California

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[Emc-users] Using a tool setter.

[John Dammeyer]

I've attached a link to the PDF since it's too large to include with this 
posting.
 
http://www.autoartisans.com/mill/drawings/MillMockupValues.pdf
 
My question is with respect to the Versa Probe screen and just in general how 
the commercial systems deal with tools.  
 
The G-Code subroutines that come with the V2 screen expect the touch probe to 
identify the G54.Z == 0 location.  Then the tools are touched off on the tool 
setter and the measurements are worked out relative to that work height value.  
 None of the numbers or the math made a lot of sense for the longest time.  
Hence I did the drawing to get a better feel.  
 
In my case the Knee is the Z axis and Home is all the way down unlike my CNC 
router where the home switch is when the router is all the way up.  However the 
home switch, although setting Machine Coordinate Zero, doesn't have anything to 
do with the spindle location.  With a touch probe of known length (when 
tripped) it's easy enough to set a G54.Z to 0.  But one can't touch probe the 
tool setter since it trips when moved down and the probe trips well before it 
moves the tool setter down.
 
The way I do it now, and I think it's the best way is I first home the system.  
Then raise the knee until it's very close to a pair of 1-2-3 blocks stacked for 
5" as in the drawing.  Then the knee is raised with the MPG until the 5" 
assembly won't slide under the quill but a 0.001" movement downward again 
allows it to slide under.  That Machine Coordinate Z value plus the 5" tells me 
where the base of the quill is; The QuillMaxHeight
 
Next I move over the tool setter and continue to raise the knee until it trips. 
 Easiest to do with
G91
G38.3 Z-2.0 F2.5
Now that point is the height of the tool setter or better known as 
ToolSetterSize. 
 
Finally a tool installed in the quill and then the knee brought up to have the 
tool setter trip on the tool results in a value that with the simple math:
 
  abs(QuillMaxHeight - ToolSetterSize - ToolTripPoint)  
 
results into the length of the tool which can be installed in the tool table.
 
The V3 version of the Versa Screen does not do what the version from someone 
named Alkabal who rearranged the versa probe screen but also tested the tool 
table to see if it had a valid tool length.   If length is zero then it uses 
the tool setter.  If the length is not zero then it goes and determines the 
tool length.  I think a checkbox can determine if the length also gets entered 
into the tool table.  Not always wanted if it's a drill bit in a drill chuck.
 
Have I missed anything?
Thanks
John

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Re: [Emc-users] Touch screen for linux

[Thaddeus Waldner]

If decent colors at off-axis viewing angles are important, then add IPS to your 
search.

> On Jan 9, 2023, at 6:05 PM, Bari  wrote:
> 
> roblems with LCNC.


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Re: [Emc-users] Touch screen for linux

[Bari]

https://www.newegg.com/Seller-Store/AngBo

Check the box for: Touch Screen Monitors

All under $300 and from 10-13", and US seller if that helps with returns.

I haven't tested these but I have used the Acer cap. touchscreen 
monitors $300-400, 21-27" in some shops without problems with LCNC.


On 1/9/23 15:46, andrew beck wrote:

Hey guys
Looking for a Chinese industrial touch screen that people have checked
works on Linux.

There was some links to AliExpress floating around but I lost them

They don't need to be massive but I'm trying to go touch screen style if I
can

Regards

Andrew

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Re: [Emc-users] Touch screen for linux

[John Dammeyer]

After the issue with the Versa probe screen covered up by the side panel I 
think a 1920x1080 screen is what I'd consider.
John

> -Original Message-
> From: Thaddeus Waldner [mailto:thadw...@gmail.com]
> Sent: January-09-23 3:20 PM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Touch screen for linux
> 
> IF you need a tiny screen AND don�t mind fabricating a bezel AND don�t mind 
> creating a custom UI:
>   these work great
> 
> HDMI 600 x 1024, 7� IPS, micro usb power and capacitive touch.
> 
> Caveats: None of the standard interfaces will work with only 600 vertical 
> resolution. My application called
> for a custom UI.
> 
> https://www.ebay.com/itm/325425917185?hash=item4bc4e56d01:g:66EAAOSwJ~RjdAne&amdata=enc
> %3AAQAH4K3R8lTxvx14EqH%2FkcCxWIX4pxO7zEijbHqzsnKfAgvwAMGDqusBJusuOQS5Ci4x%2Byj
> 0xAaJ2xojWpCyAUICMsIlwLd8YYWkolEVBMS395SzDJftqRd7ZA6fMrkJTSgzMqvAJJpVOlDzvHFVbn%2FwL
> 6RwUHc8oBnX%2FGgj7A7OZ%2FtvM37rH4K9WmgBY98PTyW2dtJlvWWru0LM30b59jaajSMk0VF7hQiM
> %2Fas0wEjMCjTCczNC%2Bmo416PiGqhwHLyPD42YTnPsW9k4t5R5Na3wqI2pKtDgd8Q1W%2FSmvjpDU
> UF%2F%7Ctkp%3ABFBM3JzXjLNh?
> 7inch HDMI Pi Screen Capacitive Touch LCD (C) 1024�600 IPS USB Touch Brand New
> ebay.com
> 
> 
> 
> 
> > On Jan 9, 2023, at 3:46 PM, andrew beck  wrote:
> >
> > Hey guys
> > Looking for a Chinese industrial touch screen that people have checked
> > works on Linux.
> >
> > There was some links to AliExpress floating around but I lost them
> >
> > They don't need to be massive but I'm trying to go touch screen style if I
> > can
> >
> > Regards
> >
> > Andrew
> >
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> 
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Re: [Emc-users] Touch screen for linux

[Thaddeus Waldner]

IF you need a tiny screen AND don’t mind fabricating a bezel AND don’t mind 
creating a custom UI:
these work great 

HDMI 600 x 1024, 7” IPS, micro usb power and capacitive touch.

Caveats: None of the standard interfaces will work with only 600 vertical 
resolution. My application called for a custom UI. 

https://www.ebay.com/itm/325425917185?hash=item4bc4e56d01:g:66EAAOSwJ~RjdAne&amdata=enc%3AAQAH4K3R8lTxvx14EqH%2FkcCxWIX4pxO7zEijbHqzsnKfAgvwAMGDqusBJusuOQS5Ci4x%2Byj0xAaJ2xojWpCyAUICMsIlwLd8YYWkolEVBMS395SzDJftqRd7ZA6fMrkJTSgzMqvAJJpVOlDzvHFVbn%2FwL6RwUHc8oBnX%2FGgj7A7OZ%2FtvM37rH4K9WmgBY98PTyW2dtJlvWWru0LM30b59jaajSMk0VF7hQiM%2Fas0wEjMCjTCczNC%2Bmo416PiGqhwHLyPD42YTnPsW9k4t5R5Na3wqI2pKtDgd8Q1W%2FSmvjpDUUF%2F%7Ctkp%3ABFBM3JzXjLNh
7inch HDMI Pi Screen Capacitive Touch LCD (C) 1024×600 IPS USB Touch Brand New
ebay.com




> On Jan 9, 2023, at 3:46 PM, andrew beck  wrote:
> 
> Hey guys
> Looking for a Chinese industrial touch screen that people have checked
> works on Linux.
> 
> There was some links to AliExpress floating around but I lost them
> 
> They don't need to be massive but I'm trying to go touch screen style if I
> can
> 
> Regards
> 
> Andrew
> 
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Re: [Emc-users] Touch screen for linux

[John Dammeyer]

I'm interested in that too.
John

> -Original Message-
> From: andrew beck [mailto:andrewbeck0...@gmail.com]
> Sent: January-09-23 1:46 PM
> To: Enhanced Machine Controller (EMC)
> Subject: [Emc-users] Touch screen for linux
> 
> Hey guys
> Looking for a Chinese industrial touch screen that people have checked
> works on Linux.
> 
> There was some links to AliExpress floating around but I lost them
> 
> They don't need to be massive but I'm trying to go touch screen style if I
> can
> 
> Regards
> 
> Andrew
> 
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[Emc-users] Touch screen for linux

[andrew beck]

Hey guys
Looking for a Chinese industrial touch screen that people have checked
works on Linux.

There was some links to AliExpress floating around but I lost them

They don't need to be massive but I'm trying to go touch screen style if I
can

Regards

Andrew

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