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Subject: Re: [Homebrew_PCBs] Circuit Paper

From: Christopher Hart <tech_guru@...>
Date: 2006-05-14

I've seen this same type of thing in keypads that I have taken apart. It looks
the same as the ribbon cable that I found all over when I was scraping a fax
machiene that had stopped functioning completely. It was an inkjet based fax,
with the longest strips going to the print cartridges.

Christopher Hart
KC8UFV


On Sunday 14 May 2006 10:43, William Carr wrote:
> On May 13, 2006, at 1:09 AM, Tony Smith wrote:
> > Drill holes in the glass, bolt a connector to it.  Or insert a 
> > piece of
> > copper tube as a rivet, same as DIY vias in normal boards.
> >
> > You could just go and get the adhesive copper foil stained glass 
> > people
> > use.
> >
> > Hmm, glue SMD LEDs to the glass, use the pen to make tracks...  Hmm
> > again...
>
> My nephew trashed the Sharp calculator I gave him when he was in High 
> school, so I took it apart.
>
> Gosh !    It contained batteries, a display LCD, a sheet of plastic 
> with circuit traces printed on it, and those traces went from the 
> number pad to a microchip that was glued to the plastic.
>
> Interface to the LCD was a strip of rubber impregnated with tiny 
> wires so that current from the traces on the plastic sheet was 
> conducted straight to the contacts on the LCD.
>
> This was probably 18 years ago, and I was stunned.  No resistors.  No 
> capacitors.  No replaceable parts at all, and the plastic sheet just 
> clipped into position.
>
> I remember thinking it looked like something Wesley Crusher∗ would 
> have put together as a lark.
>
>
> ∗Star Trek Next Generation Reference.
>
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> Message transport security by GatewayDefender
> 10:44:00 AM ET - 5/14/2006