Homebrew PCBs

and in addition,the laser needs a mirror surface to carry out initial focusing 
and tracking...without that,it will also say no disc,and reject the media.





________________________________
From: tda7000 <Tda7000@....nz>
To: Homebrew_PCBs@yahoogroups.com
Sent: Wed, April 13, 2011 10:41:11 PM
Subject: [Homebrew_PCBs] Re: CD shaped PCB

  
I assume just like a writable CD, the lightscribe part also needs a pre-made 
spiral groove in the material for the laser to follow.

If this is not there I expect the drive will just say "no disc" and do nothing.

--- In Homebrew_PCBs@yahoogroups.com, Leon Heller <leon355@...> wrote:
>
> On 13/04/2011 14:31, Boman33 wrote:
> > Here is a crazy idea that might just work:
> >
> > A first requirement is being able to cut out a PCB the to look just like a
> > CD.  It needs to be accurate and typically a lathe would be used.  Apply a
> > layer of paint or other protective coating over the copper.
> >
> >
> >
> > Pop it into a CD burner that has the Light Scribe or whatever it is called
> > feature to mark CDs.  Take the layout and convert it to a JPG and use the
> > marking software to place it on the CD.  Several small SMT PCBs will fit on
> > a CD.  "Write" the picture to the "CD" and hopefully it will vaporize the
> > paint.  Afterwards etch the boards as usual.
> >
> > If the power is controllable, it might also be used to expose a photoresist
> > as an alternative.
> 
> 
> CD lasers don't have enough power.
> 
> Leon
> -- 
> Leon Heller
> G1HSM
>


 

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