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PicDither - PicEngrave - PicLaser.
tweakie Dátum/Date: Vasárnap, 2013-06-23, 06:44 | Üzenet/Post # 1
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Anything relating to - PicDither - PicEngrave - PicLaser etc.
 
Honk Dátum/Date: Vasárnap, 2014-04-27, 05:00 | Üzenet/Post # 541
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John
    I tried changing from TTL to Analog Laser for the CO2. I think that is what you were telling me to do but regardless it worked good and I can use the skip white. This is with PEP V246. Also it allowed me to increase the IPM to 70 and I think I can go faster.
    The TTL in V246 was working good as well but There was no skip white and the end product was a lot lighter but real smooth. I am going to try this project, I am doing, with the Analog Laser, I'll post it if it comes out.
Thanks again
Jerry

Hozzáadva (2014-04-27, 05:00)
---------------------------------------------
I can't figure this out?  Also I don't know if I can explain it. I have a small object, .75 X .75 inches (logo) It only looks good about 300 D.P.I.. If I change the D.P.I. to 100 it becomes very pixelated. What do I need to do to maintain the size and keep it at a 300 D.P.I.? I know it must be possible as I seen Jeff and Tweakie write there name on a rice grain. I'll play with Pixel Resolution but maybe there is a way in the back door.  
Thanks Jerry

 
JJWMACHINECO Dátum/Date: Vasárnap, 2014-04-27, 15:08 | Üzenet/Post # 542
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Hi Jerry,

when I engraved my name on a grain of rice, it was done by vector engraving, not raster. I assume you are trying to engrave your logo by raster engraving. Vector engraving is done by very short segmented lines/entities or arcs like in a cad drawing and your just following those lines with the laser and it's just TTL (on or off of the laser)

If I do something small when raster engraving, I use a photo editing program like Corel Photo Paint with a function called Resample. I set the units for pixel instead of inches and then I would set the DPI for 300. Then I use the rule that I explained before concerning the Pixel Resolution in PEP. If your logo is .75 X .75 (75 X 75 pixels) and your going to use a Pixel Resolution of .005" in PEP, then the setting would be 150 X 150 pixels, but it will be at 300 DPI.

If you want to vector engrave your logo that is a raster image, you need to use a program like CorelDraw that will trace the image and covert it to a vector and then export it as a DXF. Then you have to take the DXF file and bring it into a cad/cam program to generate the gcode for it so your laser will follow those lines.

Jeff

Hozzáadva (2014-04-27, 15:08)
---------------------------------------------
Here is a vector engraving I did yesterday by tracing the original raster image and generating the gcode in my Cad/Cam program.

Csatolások/Attachments: 6162460.jpg(140Kb)


Extensivly Re-worked/Re-designed/Modified Servo K2CNC KG-3925 and the Mini Laser Engraver

Az üzenetet módosította/Modified by JJWMACHINECO - Vasárnap, 2014-04-27, 15:35
 
Honk Dátum/Date: Vasárnap, 2014-04-27, 20:36 | Üzenet/Post # 543
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Jeff
That's calendar last centuries, do you have new one for the next 2,000 years. I did the same calendar hurt but with V carve and stain in Bobcat, before I had my laser but it still let some time left. I have used your math a few times now to DECREASE the Space Between the Lines burn and hurt good works, Thanks. But now with the added in math for changing the DPI to Pixel Resolution pep Maintain clarity in the learning curve is steeper than my ability to comprehend. I do have one advantage though; I am a good Guesser. I'll keep working with what you posted and maybe soon I'll get it figured out. I have used in my Laser Plasma mode (Vector) a few times and I think that is what your Trying to say in the above post, to a lesser degree on rice. I also can hurt thank you for information.
Thanks Jerry


Az üzenetet módosította/Modified by Honk - Vasárnap, 2014-04-27, 20:39
 
JJWMACHINECO Dátum/Date: Vasárnap, 2014-04-27, 22:04 | Üzenet/Post # 544
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Jerry,

I'm not always right all the time.  facepalm

I just played around with a small image in Corel Photo Paint and resampled it and increased the DPI, and it still looks pix-elated, but when I engraved it with TTL, it came out very good. Viewing on the PC monitor can be deceiving. Try engraving it even if it looks too pixelated on the screen and see if it comes out alright.

Here is what the dithered image looked like in PEP to generate the code. Terrible! The engraving size was 2.8" X 2.1".



Here is how it came out on Red Oak.



It's still looks a little pixelated up close, but when you get back away from it, it looks pretty darn good.

If it's not exceptable to you, try vectorizing it in Bobart. I know my older version of Bobcad (ver. 20) with Bobart Pro X, had a way to convert a raster image to a vector. I don't know if your version does.

Jeff
Csatolások/Attachments: 9536857.jpg(255Kb) · 2272925.jpg(217Kb)


Extensivly Re-worked/Re-designed/Modified Servo K2CNC KG-3925 and the Mini Laser Engraver

Az üzenetet módosította/Modified by JJWMACHINECO - Vasárnap, 2014-04-27, 22:07
 
Honk Dátum/Date: Hétfő, 2014-04-28, 02:54 | Üzenet/Post # 545
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Jeff
I have BobArt V25 and it does real good Raster to Vector I use it all the time. They just came out with Pro version Also Hurt vectors suppost to do but it's a better bet to pricy for me. I use Corel Paint Shop Pro to Increase the Picture Size and DPI but I have not quite got a handle on sending it to PEP. but is coming. I Have Been Trying to set up my machine to run my diode laser in vector mode and I am using Mach3 Plasma in but I'm not sure how to laser on and off. Mach does not seem to want to let me use C and 0.0255 C0.0000. I tried to make into C 0.0255 M03 and M05 into C0.0000. (NOT GOOD) You got any good ideas?
Thanks
Jerry
The Logo I been Trying to get .875 in high
Csatolások/Attachments: 9641847.jpg(46Kb)


Az üzenetet módosította/Modified by Honk - Hétfő, 2014-04-28, 03:16
 
picengraver Dátum/Date: Hétfő, 2014-04-28, 04:31 | Üzenet/Post # 546
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Jerry,

Some random thoughts.

Starting with a small image and increasing its size is not always successful.

Video monitors can only display 96 DPI regardless of what DPI the original image is. Viewing a dithered image on a monitor is misleading. Better to print the image at desired size using an injet printer to see how it will engrave.

Always better to start with a large image and scale down.

I frequently trace images using Inkscape and save to a DXF file for use in Cut2D. I magnify them on screen and manually trace them on a separate layer. Once vectorized, they can be engraved at any size without resolution loss.

Trying to laser diode engrave at more than 200 DPI (which is a pixel size of 0.005 inches) is futile since the laser beam can't really focus and burn smaller than that.

If you have a 1 inch square image at 100 DPI (0.010 inches) and you engrave it with PEP at 0.005 inch pixel resolution, the final image will be 1/2 inch square (1" x 50%). If you engrave the 1 inch image at .0075 pixel resolution, the final size will be 0.75 inches (1" x 75% or 133.33 DPI).



This is your image at 175 pixels high, which will engrave at .875 inches high with a PEP pixel resolution of 0.005 inches. (175 x .005 = .875)

Hope this helps some.
John
Csatolások/Attachments: 0041992.jpg(35Kb)


I paint with a blue light beam.
 
Honk Dátum/Date: Hétfő, 2014-04-28, 20:40 | Üzenet/Post # 547
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I'm getting closer Thanks to John and Jeff.
I did it with the DAC and I did it at about 84 IPM But the second time I was doing it the Zero DAC lost and I had to reset and start over.
Now I have to do it myself if that's vacancy.
jerry

Csatolások/Attachments: 1237710.jpg(123Kb)
 
picengraver Dátum/Date: Hétfő, 2014-04-28, 21:20 | Üzenet/Post # 548
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Good Jerry,
Now try it with less laser power.
John


I paint with a blue light beam.
 
Honk Dátum/Date: Kedd, 2014-04-29, 23:35 | Üzenet/Post # 549
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John
    I tried that at C-0.0220 instead of C-0.0255 and it came out real good, Thanks. Now if I can only get my head wrapped around this pixel resizing stuff I'll be doing something. What I am trying to attempt is to V carve all the black in BobCad change machines and laser in the color. When I am using PEP with the pixel resolution at 0.010 there is very little math and by nature I am lazy. As soon as the light comes on and I write down some kind of formula I might get this working.
     By the way the weather man is talking about you again. Hope all is okay. You all are in our prayers!
Jerry
 
picengraver Dátum/Date: Szerda, 2014-04-30, 14:58 | Üzenet/Post # 550
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Idézet Honk ()
By the way the weather man is talking about you again. Hope all is okay. You all are in our prayers!
Jerry

Thank you, Jerry. The storm is not expected to reach the Tampa area, but Jeff is likely experiencing some of it as he is near (on the edge of?) the Florida panhandle.

John


I paint with a blue light beam.
 
JJWMACHINECO Dátum/Date: Szerda, 2014-04-30, 17:28 | Üzenet/Post # 551
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Yea, it's nasty here. Allot of rain, thunder and lightning. No tornado's though.  thumb

Jeff


Extensivly Re-worked/Re-designed/Modified Servo K2CNC KG-3925 and the Mini Laser Engraver
 
picengraver Dátum/Date: Péntek, 2014-05-02, 01:34 | Üzenet/Post # 552
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The late, great, Lou Gehrig - 1934.
Engraved with PicEngrave Pro - scanned in grayscale.
Mach3 - 80ipm - 40% feed rate change - .007" resolution - 45° angle


Cat - Engraved with development version of PicLaser Lite.
Mach3 - 60ipm - .007" resolution - horizontal angle
Csatolások/Attachments: 8137015.jpg(189Kb) · 7917231.jpg(207Kb)


I paint with a blue light beam.
 
Doug Dátum/Date: Kedd, 2014-05-06, 18:59 | Üzenet/Post # 553
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John, on the above cat photo, what is value power (amp) at 5 volts (-0.0255)?  Mine runs 1.9 amps at 5 volts.  Could you email me the original and and also tell me the edit values you used?  Would like to try.  I'll still not getting the results that I desire.  Would like to use the cat as another test piece.

Doug
 
picengraver Dátum/Date: Kedd, 2014-05-06, 22:48 | Üzenet/Post # 554
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Hi Doug.
My max. amps is 1.7.  I used PicLaser Lite, not PicEngrave Pro.
I used Horiz. angle, 60ipm, and .007 resolution, Baltic birch ply.
Email sent.
John


I paint with a blue light beam.
 
dadiy Dátum/Date: Hétfő, 2014-05-12, 15:49 | Üzenet/Post # 555
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I hope this is the right place to ask the question.  I recently ordered a 2000mw 808nm laser from Kale CNC.  I was planning to use it only for line art burning (pyograpohy) but after stumbling over pic engrave pro I'm wondering whether the TTL control of my laser is compatible with the software.

The instructions KaleCNC supplied use the spindle speed between 500 and 10'000 rpm to control the laser output power,  i downloaded the demo of the pic engrave software but only see that the Z axis is moved to control power when selecting TTL.  Is there an option I'm not understanding that will adjust spindle speed for laser power instead?

thanks for the help.
David.
 
tweakie Dátum/Date: Hétfő, 2014-05-12, 16:48 | Üzenet/Post # 556
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Hi David,

Welcome to the forum.

I am sure John will be along shortly - he is the best person to advise you on the PicEngrave software.

Tweakie.


Success consists of going from failure to failure without loss of enthusiasm.
 
JJWMACHINECO Dátum/Date: Hétfő, 2014-05-12, 17:09 | Üzenet/Post # 557
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Just checked,

You can use spindle speed (SXXXX) for laser power control with PicLaser Lite.

http://www.picengrave.com/

Jeff

Hozzáadva (2014-05-12, 17:09)
---------------------------------------------
I believe only Z,A,B,C & F can be used in PEP 4, but I'm sure if there is enough requests for S, John may add it. I can't speak for him though.


Extensivly Re-worked/Re-designed/Modified Servo K2CNC KG-3925 and the Mini Laser Engraver
 
picengraver Dátum/Date: Hétfő, 2014-05-12, 17:30 | Üzenet/Post # 558
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Hi David,
Welcome to our group. 

PicEngrave Pro (PEP) will work with all TTL controllers that utilize a single output pin for control.  The 3rd axis can be configured in PEP to use A, B, C, F, or Z.  Most of us use either the Z or C axis for laser control.  With an analog controller, we use a converter, either mechanical (encoder) or electronic (DAC) to allow variable laser diode power with an analog driver such as the Flexmod P3.

For TTL only controllers, like I believe the Kale is (info on their web site is very poor), then the Z or C axis direction pin can be used, as well as various other single pin outputs from the cnc control software.

PEP will generate gcode to work with both of the above methods for raster engraving.   PEP will not generate gcode for vector engraving from DXF files.  For vector engraving, a program such as Vectric's Cut2D is needed, to name just one of the many CAM programs available. 

I do not understand the refrence to the use of the spindle function/command to control the Kale system.  This would imply it has some method of variable power adjustment, but their web site only mentions having a  TTL control function. 

If you could post a link to a copy of Kale's instructions, or email me a copy, I will be happy to review it to see how their control system varies from standard TTL control, if indeed it does.  I found another user who posted that he uses pin 17 output from Mach3 and was using the mist functions (M7/M9) to control his Kale.  No mention of the spindle command.  Again, this implies Kale uses a standard TTL control input.

John Champlain
www.picengrave.com
picengrave AT verizon.net

Hozzáadva (2014-05-12, 17:30)
---------------------------------------------

Idézet JJWMACHINECO ()
I believe only Z,A,B,C & F can be used in PEP 4, but I'm sure if there is enough requests for S, John may add it. I can't speak for him though.
OK Jeff, still badgering, I see.  biggrin

"S" will be added once I can understand how it is used.

Properly Badgered John


I paint with a blue light beam.
 
dadiy Dátum/Date: Hétfő, 2014-05-12, 17:37 | Üzenet/Post # 559
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Thanks john,  email sent.

I just looked at PicLaser lite but i still don't see the S option there either.
 
JJWMACHINECO Dátum/Date: Hétfő, 2014-05-12, 17:48 | Üzenet/Post # 560
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You just need to type in a S in Laser Control Command and type in the Max Laser Value and Min Laser Value as speed. It's there, but the only way to know is, generate the code and open it in a text editor.

X0 Y0 S2425.4902
X0.01 Y0 S2457.7451
X0.02 Y0 S2472.2549
X0.03 Y0 S2475.098
X0.04 Y0 S2475.098
X0.05 Y0 S2475.098
X0.06 Y0 S2475.098
X0.07 Y0 S2475.098
X0.08 Y0 S2475.098
X0.09 Y0 S2475.098
X0.1 Y0 S2475.098
X0.11 Y0 S2475.098
X0.12 Y0 S2475.098
X0.13 Y0 S2475.098
X0.14 Y0 S2475.098
X0.15 Y0 S2475.098
X0.16 Y0 S2480.8824
X0.17 Y0 S2480.8824
X0.18 Y0 S2480.8824
X0.19 Y0 S2480.8824
X0.2 Y0 S2480.8824
X0.21 Y0 S2480.8824
X0.22 Y0 S2480.8824
X0.23 Y0 S2480.8824
X0.24 Y0 S2480.8824
X0.25 Y0 S2480.8824

Hozzáadva
(2014-05-12, 17:48)
---------------------------------------------
John,

I'm not badgering you. I have absolutely no need for the S command. tongue  I only badger you when I need sumtin. laugh

Jeff


Extensivly Re-worked/Re-designed/Modified Servo K2CNC KG-3925 and the Mini Laser Engraver

Az üzenetet módosította/Modified by JJWMACHINECO - Hétfő, 2014-05-12, 17:53
 
Fórum » Only in English » Technologies » PicDither - PicEngrave - PicLaser. (Anything relating to these softwares can be discussed here.)
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