Converting from analog to digital laser

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jmkissell
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Joined: Sun Sep 18, 2016 2:18 pm

Converting from analog to digital laser

Postby jmkissell » Sun Sep 17, 2017 11:31 pm

I originally setup my laser with the belt driven analog driver that changed the laser intensity.
It worked pretty good.
But I thought it would be a good idea to switch over to a laser with pwm driver.
The laser seems to work like it should.
But now for some reason all X/Y moves are very slow.
Anyone else have any experience with this conversion?
Thanks

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Picengravertoo
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Re: Converting from analog to digital laser

Postby Picengravertoo » Mon Sep 18, 2017 8:24 am

Are you using Mach3? If so, S commands will dwell on every line of gcode because those commands are for spindle speed, not laser power.

You will need a 8bit PicConvert board for PWM laser control. The axis letters used are Z, A, B, or C.

https://jtechphotonics.com/?product=dac ... rter-board

If you were using the MA3 10bit Analog encoder before, it's a better option. US Digital does sell a 10bit PWM version also.

jmkissell
Posts: 7
Joined: Sun Sep 18, 2016 2:18 pm

Re: Converting from analog to digital laser

Postby jmkissell » Mon Sep 18, 2017 9:33 am

This sounds like the problem. I guess there is no way to stop the dwell when using S?

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Picengravertoo
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Re: Converting from analog to digital laser

Postby Picengravertoo » Mon Sep 18, 2017 10:05 am

There is no way around the dwelling when using S commands in Mach3. You need to use axis moves with the PicConvert board or the encoder.

jmkissell
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Joined: Sun Sep 18, 2016 2:18 pm

Re: Converting from analog to digital laser

Postby jmkissell » Mon Sep 18, 2017 10:23 am

Ok, thanks


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