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Subject: Re: [Homebrew_PCBs] Re: Using a plotter to scribe bboards

From: "Roy J. Tellason" <rtellason@...>
Date: 2005-06-05

On Sunday 05 June 2005 12:29 pm, Steve wrote:
> Are you using the correct serial cable or adapter? The serial port on
> those HP plotters is not standard.
>
> Scroll down this page:
> http://tinyurl.com/8w4dv
>
> Also the small format HP plotters use a lower left origin.
>
> Steve Greenfield

That's the second post I see saying something about the interface, but
wouldn't the fact that the thing moves somewhat already suggest that the
computer is talking to it? I'd be inclined to look at whatever coordinate
system is being used, maybe one of them is going the wrong way, or
something.

> --- In Homebrew_PCBs@yahoogroups.com, "idaho_huckleberry"
>
> <dmiller45@j...> wrote:
> > Has any one had any luck in using a plotter to scribe through the etch
> > resist to make a PCB?
> > I have a HP 7440 plotter I have modified with a scribe head, I down
> > loaded a routine suggested on this group and tried it on my Eagle
> > layout. It seems to create the files, but when I send them to the
> > plotter the scribe just goes to the upper left corner of the board,
> > makes noises and bounces the scribe up and down. I suspect it is
> > trying to get to some un-reachable portion and that is the furthest it
> > can get to.
> >
> > I see where others have used this successfully, is there some other
> > modifications to the softweare or plotter that needs to be made?
>
>
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