Re: [CAD_CAM_EDM_DRO] Re: Thanks Mariss/Where are you!

> I suspect that where it will lead is to the realization that to get constant
> velocity countouring from such a box, will require enough computing power
> and look ahead that the micro-core will have to be upgraded almost to the
> level of the computer connecting to it.

That's not really true. Programs like EMC need a fast processor to do
stepper pulse generation because their is no ability to do finely
variable rate timing in hardware, so the processor must work overtime
to fake it. A far more primitive microcontroller equipped with
suitable programmable hardware counter/timers can offload the timing
generation, making more processor cycles available for the actual
motion calculations. This is how people were able to build reasonable
performance cnc controls on 8 bit processors, and with high
performance 16 and even 32 bit embedded processors common today, the
task should really not require very expensive hardware.

Chris Stratton

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Christopher C. Stratton
Engineer, Instrument Maker, and Horn Player
ccs@... 617 628 1062
http://web.mit.edu/~stratton/www/brassbuild.html