Re: TI-H: TI-Indiglo

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: TI-Indiglo
From: "Richard Piotter" <richfiles1@hotmail.com>
Date: Wed, 11 Feb 1998 18:37:11 PST
Reply-To: ti-hardware@lists.ticalc.org


I know. I invented it about 3 or 4 months ago. It's on my page.

http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html

Richard Piotter
richfiles1@hotmail.com

>
>For all of you who have been e-mailing back and forth about Indiglo on 
a =
>calc.  I have the perfect solution.  I went to my grandfather's house =
>and had him cut a piece of plexiglass about 1.5mm thick.  Then I =
>sand-papered the sides enough to reflect light.  I bought 8 =
>high-brightness LEDs from DIGI-Key.  I set them up in a seriex-parallel 
=
>circuit with a small trimmer sticking out of the side of the calc (for 
=
>brigthness).  I CAREFULLY removed the LCD and put the plexiglass 
between =
>the mirror and the LCD screen.  I then placed the LEDs around the edges 
=
>so they were touching the plexiglass and glued them in.  I put =
>everything back together, and it worked.  Good luck if you try it.
>


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