Re: 4 Stepper Controller

Hi Bill,

Very interesting article - I think you'll find it only applies to
quite small stepper motors, the L293 driver chip they use will only
supply about 1Amp - most CNC machines will need 3 or 4 times (at
least!) that.
Having said that I don't see any reason why the same technique
couldn't be used with bigger drivers.
Kevin

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Bill Vance <ccq@...> wrote:
>
> Howdy folks;
>
> I'm not sure how it stacks up against whatever you might be doing
now, but this
> months EDN, (Electronic Design News), has a circuit for a 4 Stepper,
8 switch
> controller that might be of interest. Go to:
>
> http://www.edn.com/
>
> Click on, "Design Ideas", and scroll down to the article:
>
> "PC's parallel port and a PLD host multiple stepper motors and
switches"
>
> Looks pretty simple.
>
> Bill
>
>
> --
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