Homebrew PCBs

tda7000,

Thanks for all three links concerning Laser Direct Imaging for PCBs. Any further links/sources for info on this topic will also be appreciated.

Thanks.

Wayne

--- In Homebrew_PCBs@yahoogroups.com, "tda7000" <Tda7000@...> wrote:
>
> I believe I posted the links about the German project? ...Anyway...
> 
> Another idea was here: http://4hv.org/e107_plugins/forum/forum_viewtopic.php?66471
> 
> The first guy seems to have had an idea of using a grid of LEDs, but I don't think you can get them small enough.
> 
> However, in the 2nd half of that thread, there was another guy with a UV laser diode on a plotter table, the photos show that it looks like the board came out pretty well.
> 
> This is something I thought of trying out, but it looks expensive. Also double-sided would be a pain.
> 
> Laser-printed transparencies and toner-transfer still works well for me so far...
> 
> 
> --- In Homebrew_PCBs@yahoogroups.com, "wayne.causey" <wayne.causey@> wrote:
> >
> > Robin, thanks for providing the links for an outstanding Laser Direct Imaging project. Does anyone know of any similar projects?
> > 
> > Wayne
> > 
> > --- In Homebrew_PCBs@yahoogroups.com, Robin Whittle <rw@> wrote:
> > >
> > > In "Re: pcb-specific laminator/exposure/etc printer...", on 2012-07-01,
> > > tda7000 wrote:
> > > 
> > > > Much easier to do this, I would think:
> > > > 
> > > > http://www.youtube.com/watch?v=fi4P-Bwc6g8
> > > > 
> > > > http://www.das-labor.org/wiki/LaserExposer
> > > 
> > > This looks difficult to do, by most standards, since there is customised
> > > hardware and two microcontrollers.  There would be significant problems
> > > calibrating it, correcting for the out-of-focus laser beam and the
> > > non-linear sweep across the board.
> > > 
> > > Also, I think it would be difficult to align exposures for double-sided
> > > compared to the alternative of aligning two phototools (or perhaps
> > > transfer paper with toner) facing each other, and then slipping the PCB
> > > material in between them.
> > > 
> > > I think it is a really great project, but I don't feel inclined to do
> > > all this work myself.
> > > 
> > >   - Robin
> > >
> >
>