[Swansea Hackspace] An old PC with parallel printer port?

[Graham Owens]

Well perhaps us hardware types could meet up one night during the week to
get it up and running or at least figure out the best way to run it.  It
currently has stepper spindle drivers built in, just needs pulse/dir
signals to control it - spindle speed is currently manual, although i have
been building a pwm controller for it.

PS Ceri, people who use USB -> Parallel adapters fall into the
aforementioned category of mach3 users :P

On 16 September 2014 10:03, Justin Mitchell <justin at swansea.hackspace.org.uk
> wrote:

> On Tue, 2014-09-16 at 09:39 +0100, Ceri Clatworthy wrote:
>
> > But I will try to order a USB to Printer port cable,
>
> They are of no use, they are designed only to talk to well behaved
> devices using the defined protocols, you cant bit bang (waggle
> individual lines) with any kind of speed or accuracy.
>
> An interesting alternative suggestion is that if the existing controller
> board is of the really dumb type, with just step and direction inputs,
> then it may be possible to use a standard arduino and firmware and wire
> up the parallel connector as if it was a bunch of stepsticks.
>
> I just dont know enough about the mills hardware to speculate further
>
>
>
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