[simpits-tech] cutting knobs...

[Gene Buckle]

>> That's cool.  What are you going to use as the cutter motor?  A router or?
>
> Ryobi Router 400watt 30,000rpm to start with and sin wave chopper speed
> controller to refine tool speeds hopefully, just need to work out how to
> vary the speed with a output from the pc's parallel port ,  i can switch the
> motor on and off with a spare output, but i would be nice to have the
> computer dial in the desired tool speed automatically <wish list>
>
You might want to just build a speed controller that you can talk to via a 
serial port.  The 3 phase spindle on my 'bot is controlled by an RS-422 
link.  The max RPM is 18,000.

g.

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