New 500mw Diode Laser engraving machine

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Jose
Posts: 31
Joined: Tue Mar 17, 2015 12:40 pm

Re: New 500mw Diode Laser engraving machine

Postby Jose » Fri Apr 10, 2015 6:29 pm

Picengravertoo wrote:Post away. I just posted a TTL engraving myself.
viewtopic.php?f=12&t=61


Nice. Was thinking when you going to add a PicVector to your `programs, but maybe improvig this, yhe PicVector could not be neccessary.

Saludos,
Jose

Jose
Posts: 31
Joined: Tue Mar 17, 2015 12:40 pm

Re: New 500mw Diode Laser engraving machine

Postby Jose » Fri Apr 10, 2015 7:32 pm

Hi all,

Last pic could made this afternoon. 5 hous aprox. Photo scan 1200ppp. Edited in mm, 0,12 pixel size. Atkinson dithering.84*84 mm aprox

Darker hotizonal zones appears cause the irregular painting of the backside of the mirror.

Background laptop screen

Saludos,
Jose
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Picengravertoo
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Re: New 500mw Diode Laser engraving machine

Postby Picengravertoo » Fri Apr 10, 2015 7:43 pm

Very nice mirror engravings Jose and thanks for posting them.

Jeff

Jose
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Re: New 500mw Diode Laser engraving machine

Postby Jose » Fri Apr 10, 2015 7:58 pm

Hi Jeff and

thanks man, nice to learn.

But what I really want is to be able to produce grayscale images. With the equipment you listed to me in the other post will I be able to start engraving true grayscale?.

And with these components I dont need a DAC or similar mecanical decive to vary the LD power?

Saludos,
Jose

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Picengravertoo
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Re: New 500mw Diode Laser engraving machine

Postby Picengravertoo » Fri Apr 10, 2015 8:38 pm

That's right Jose, no need to build a DAC. With the J-Tech PWM grbl flashed to the UNO, the PWM out on pin 11 will vary the modulation to the laser driver with S power commands in the gcode which will vary the power of the laser diode to engrave grayscale images.

Here is a video of our Shapeoko with the UNO PWM, gshield, Flexmod P3, and 445nm laser diode engraving shades with varied intensity.



Jeff

Jose
Posts: 31
Joined: Tue Mar 17, 2015 12:40 pm

Re: New 500mw Diode Laser engraving machine

Postby Jose » Wed Apr 22, 2015 1:21 am

Hello,
So for now I keep waiting for the improvement parts I ordered for my machine (electronics) and reading you on here and also in another cnc forums. Always delighted with your outstanding jobs, saludos,
Jose

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Picengravertoo
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Re: New 500mw Diode Laser engraving machine

Postby Picengravertoo » Wed Apr 22, 2015 3:33 pm

Thanks Jose,

Can't wait to see your laser engraving masterpieces. ;)

Jeff


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