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Messages - ART

1
Mach3 under Vista / Re: Pulley Ratio Accuracy Problem
« on: August 25, 2019, 01:23:05 PM »
Brian:

  Sorry, I wasnt quite understanding. I do see the problem, I used a conversion to
2 decimals when I converted it to a string. I used

_gcvt( Ratios[c] , 2 , NumOut.GetBuffer(20) );

instead of
_gcvt( Ratios[c] , 10 , NumOut.GetBuffer(20) );

  Unfortunately, there is no way for you to grab this or change its default. Its not
a value you can change and have it stay changed, I checked the code and its simply
hardwired to 1 decimal. One of those errors not noticed in time to correct.

Art

2
Mach3 under Vista / Re: Pulley Ratio Accuracy Problem
« on: August 25, 2019, 11:46:04 AM »
Hi Brian:

 The spindle ratio for each pulley is stored as SPINRATIO1 etc in the xml file. IT is however a calculated value in
calibration windows, so when you look at it, like shrodingers cat it can change from what you think you set it to.
So long as you dont look at it, it should stay stored as you selected it.  Its fairly complex and likely a bit buggy in
that section so check your xml to see what it thinks it is..

Art

3
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 15, 2019, 03:45:49 PM »
I use opto's, the speeds really arent all that high in the scheme of things..


4
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 08, 2019, 07:48:07 AM »
   The problem is not getting PWM, many boards offer a PWM output, the problem is always getting
the PWM to change during motion based on a photo. This requires the CNC program to deal with either
a photo or a data-file representing that photo. This is not a normal thing for a CNC program to do,
it requires handling data in realtime that a typical CNC program doesnt like to do, its busy enough
doing the motions and GCode translations.
   Mach4 will do it with an ESS , the capability is in the ESS's driver as Greg was kind enough to add
that capability for Laser users. Auggie will do it because it was designed from the start to control a
laser.
   You will find with lasers general CNC programs are difficult to coax into doing laser engraving of
photos just as Auggie is difficult to coax into doing normal CNC milling work. It can do so , but its
primary purpose is Laser.

  Luckily, if you wish to do any normal Milling , the PoKeys will work with Mach3 or Mach4. Auggie is
a free program so its just a good thing to have in the toolbox if you have a Laser capability on  a
Milling type configuration.

Art

5
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 07, 2019, 07:20:17 PM »
>>exists a better controller board to be able to manage the laser for engrave ?

  Not that I know of. The 57CNC will provide a new PWM setting each ms. I understand though that
the ESS will now also engrave with laser using mach3. I believe it also uses a 1ms power setting
frequency.

Art


   

6
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 07, 2019, 05:26:25 PM »
Yes, so long as the driver kits take step/direction as their input , thats what you need.
You may want to read some on the gearotics.com forum, theres quite a bit on the laser hookup.
 Just send the operator a note asking for membership to the forum. Its request only to stop spam.

Art

7
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: April 07, 2019, 04:20:08 PM »
  To use Auggie for laser photo's you need either a 57CNC or a 56 with the external motion engine baord to attach to it.
The 57cnc is the only one that has the PWM on the fly control for power by the millisecond. If you add the pokeys
external motion engine to a 57E then you also have that capability.

Art

8
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: August 04, 2018, 11:23:12 AM »
Tweakie:

  Thx, nice to know. Nice to see lasers getting some respect. :)

Art

9
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: March 15, 2018, 07:14:01 AM »
All G1's.. I turned off rapids for that test :)

Art

10
Show"N"Tell ( Your Machines) / Re: The Laser Project.
« on: March 14, 2018, 03:03:35 PM »
Tweakie:

    Just starting to test..

https://www.youtube.com/watch?v=5bOzb-32pa8

  Im impressed so far, but you know I see nwo speed wont help in photos at all.
The Laser is controlled in 1ms packets, so if you raster a photo at 1 second across,
it will have a resolutoin of 1000 pixels. At .5 seconds, only 500. Faster you go the
less res you have. In theory a 4k image at 4 seconds per raster sweep is the highest res.
one can get ..

  I'm finding galvos are great at vector works, infinite acceleration helps.. but for photos
I think speed is my enemy..

Art