Author Topic: no success etching in greyscale  (Read 4272 times)

dindunuffin

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Re: no success etching in greyscale
« Reply #45 on: July 08, 2016, 07:57:53 PM »
Take pictures, add arrows, and detail what steps you take for those of us that are not so bright.

QuietMike

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Re: no success etching in greyscale
« Reply #46 on: July 08, 2016, 09:35:22 PM »
Ken, I greatly understand what you are experiencing, what has helped me after much trial, is to first get or make an image of a grey scale - i just made one in Paint.net, its 4 boxes side by side the leftmost is white and the rightmost is black, with two intermediate shades of grey in between.
i have given up on the grey-scale setting in T2 for the moment and gone back to dithered at a high resolution.

then in t2, figure out what speeds and powers get you the best result, where you can see 4 different blocks,
this itself is tricky because you'll find that after a certain power level the wood response goes up dramatically and you get too burnt on the black.

what i try and do is find the highest power level that does not actually mark the wood, and use that is the low (off) power.
you will most likely need to lower the speed, you can check this by looking at the borders of the squares (which are thin black lines) on your results, if you can't get clear borders then the laser is moving too fast.

my best settings for wood seem to be around  power 125/230, speed 700-1000, resolution .03-.05

another tip ive found is that if you find settings that work well, and on the next image you decide to change the resolution, you will need to find new settings for the other parameters, lowering the resolution makes the result much hotter (darker)
don't go lower than .03 - .04 if you do large images because it will crash T2

BrOncO

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Re: no success etching in greyscale
« Reply #47 on: August 16, 2016, 06:06:20 AM »

hello all;
Today I decided to pull out the module from the laser, the laser is the banggood 2.5w sold with the kit.

the module was completely covered by the white paste, is similar to silicone, is very soft.

I removed the paste with tweezers and precision knife, go slowly with the knife or you risk cutting the cable.

these are the images

Zax

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Re: no success etching in greyscale
« Reply #48 on: August 16, 2016, 06:13:05 AM »
So can you now connect the diode directly to the TTL driver?

That's the ideal solution. You should get a very linear response, but how linear the burning result is will still depend on the material.

I decided to buy this http://www.banggood.com/445nm-2000mW-2W-Blue-Laser-Module-For-DIY-Laser-Cutter-Engraver-p-1055244.html last week when it was on sale for $80.


BrOncO

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Re: no success etching in greyscale
« Reply #49 on: August 16, 2016, 08:09:01 AM »
At the moment i have not the ttl board, will arrive in a few weeks.
I have not extracted the diode but I think the cables are attached directly so it should go.

kn4ud

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Re: no success etching in greyscale
« Reply #50 on: August 21, 2016, 12:21:36 PM »
The wires are directly connected to the diode, this is confirmed.
Allen

Lob0426

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Re: no success etching in greyscale
« Reply #51 on: August 21, 2016, 06:18:16 PM »
Is there enough of the Diode legs showing to solder to?

Chances are some of us are going to end up breaking the wires.
Richard
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Experimenting with Mega2560 board upgrade

kn4ud

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Re: no success etching in greyscale
« Reply #52 on: August 22, 2016, 05:28:50 AM »
Their was enough leg on the diode in mine to solder to but you will have to remove the diode housing from the heat sink to get to it.
Allen

marcel54

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Re: no success etching in greyscale
« Reply #53 on: September 13, 2016, 08:11:47 AM »
Hello,
Can the following laser (http://www.banggood.com/445nm-2000mW-2W-Blue-Laser-Module-For-DIY-Laser-Cutter-Engraver-p-1055244.html) be linked on a card L5 to take advantage of the gradation of grey without tramage?
If yes, how?
Have we the gradation from 0 to 255?
Thanks

bonjour,
Le laser suivant (http://www.banggood.com/445nm-2000mW-2W-Blue-Laser-Module-For-DIY-Laser-Cutter-Engraver-p-1055244.html) peut-il être raccordé sur une carte L5 afin de profiter du dégradé de gris sans tramage ?
Si oui, comment ?
A-t-on le dégradé de 0 à 255 ?
Merci

Zax

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Re: no success etching in greyscale
« Reply #54 on: September 13, 2016, 09:37:50 AM »
Yes, that is the one I have and you can find posts on how to connect it and the results on this forum.

The grey scale results are excellent, perfect 0-255 power control but the material is still a factor. Some don't burn linear to power so it's never that easy to say it will work for you.

marcel54

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Re: no success etching in greyscale
« Reply #55 on: September 13, 2016, 11:27:29 AM »
What connector do you use to get back the signal on D11?


marcel54

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Re: no success etching in greyscale
« Reply #57 on: September 14, 2016, 02:10:16 PM »
Does it also work with a card L7?

Zax

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Re: no success etching in greyscale
« Reply #58 on: September 14, 2016, 02:36:01 PM »
Yes, because you really aren't using the Eleks board for anything. The PWM signal is coming directly from the Nano and power is any 12V source.

mauvan

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Re: no success etching in greyscale
« Reply #59 on: January 01, 2017, 06:15:38 AM »
Hello Bronco could you please post a picture from the Wires that comes from the Laser Diode after removing white stuff and Driver Board ....
i think it is nice for us to know if they are long enough to solder ...


thank you