Re: [CAD_CAM_EDM_DRO] USB of Jon Elson

Jon Elson wrote:

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>But, let me expand just a little.
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>The interface specs of both my PPMC and my USC boards are posted in
>detail on
>my web pages, and I would be glad to assist anyone in trying to whip up
>a driver
>for these units.
>

Ok, will study it!

>I already looked into making a driver for Mach 2, and
>found that
>generating step pulses through CPU timing loops and interrupts was so deeply
>ingrained into the entire low-level section of Mach 2 that it was very
>impractical.
>

No, I'm looking for a DIY applocation for Dos or Linux.

>But, for any software that had a clear breaking point between the
>higher-level
>trajectory planning and the lower level step pulse generation it should
>be possible
>to adapt it to these boards.
>

Can I just devide required distance of travel by the resolution, get
number of steps, and send them to execute?
Alex

> The basic method is the CPU reads the
>current position,
>compares to the desired position at that instant, computes a new
>velocity to minimize
>error, and sends that velocity to the DAC or step rate generator.
>


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>Jon
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