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<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff size=2>Well -
This is a fairly simple 2 step function that would need some work - All you need
is a switch that is triggered from the serial port
standards:</FONT></SPAN></DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=154442113-08102003>serial port transmits '1' as voltage from -5
to -12V and '0' as voltage from +5 to +12 V</SPAN></DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff size=2>This
most likley would be a simple NPN transistor circuit (Always off until
voltage applied) where the signal from the serial port is connected to
the base of the transistor and when it sees the +5v the path from collector to
the emitter (the +12v from the power line form inside of the computer) is
created. GREAT diagram on the transistor circuit on this
website:</FONT></SPAN></DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff size=2><A
href="http://www.schoolnet.ca/vp-pv/robotics/e/education/lessons/transistors.html">http://www.schoolnet.ca/vp-pv/robotics/e/education/lessons/transistors.html</A></FONT></SPAN></DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff size=2>At
that point you would just need a program in linux to send the +5V signal.
Simple and about $5 worth of parts at Radio Shack. Make the circuit and
find the program, bundle it and start selling it! :)</FONT></SPAN></DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff size=2>Hope
this helps....</FONT></SPAN></DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=154442113-08102003><FONT face=Arial color=#0000ff
size=2>Ron</FONT></SPAN></DIV>
<DIV><FONT face="Times New Roman"><FONT size=2><SPAN
class=154442113-08102003></SPAN></FONT></FONT> </DIV>
<DIV><FONT face="Times New Roman"><FONT size=2><SPAN
class=154442113-08102003> </SPAN>-----Original Message-----<BR><B>From:</B>
owner-nflug@nflug.org [mailto:owner-nflug@nflug.org]<B>On Behalf Of</B> Cyber
Source<BR><B>Sent:</B> Tuesday, October 07, 2003 2:59 PM<BR><B>To:</B>
nflug@nflug.org<BR><B>Subject:</B> Re: case mod
question<BR><BR></DIV></FONT></FONT>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">Interesting, never heard of such
a beast. What are you looking for it to signify?<BR><BR>On Thu, 2003-10-09 at
01:25, Mark Musone wrote:
<BLOCKQUOTE TYPE="CITE"><FONT color=#737373 size=2><I>Hey
guys,</FONT><BR><FONT color=#737373 size=3></FONT><BR><FONT color=#737373
size=2> </FONT><BR><FONT color=#737373 size=3></FONT><BR><FONT
color=#737373 size=2>I’m looking for some sort of case lights (neon or
led)</FONT><BR><FONT color=#737373 size=3></FONT><BR><FONT color=#737373
size=2>but the catch is that I need them computer
controlled..</FONT><BR><FONT color=#737373 size=3></FONT><BR><FONT
color=#737373 size=2> </FONT><BR><FONT color=#737373
size=3></FONT><BR><FONT color=#737373 size=2>someway/somehow I need to be
able to turn them on or off via software..</FONT><BR><FONT color=#737373
size=3></FONT><BR><FONT color=#737373 size=2> </FONT><BR><FONT
color=#737373 size=3></FONT><BR><FONT color=#737373 size=2>does such a beast
exist?</FONT><BR><FONT color=#737373 size=3></FONT><BR><FONT color=#737373
size=2> </FONT><BR><FONT color=#737373 size=3></FONT><BR><FONT
color=#737373 size=2>-Mark</FONT><BR><FONT color=#737373
size=3></FONT><BR><FONT color=#737373 size=2> </FONT><BR><FONT
color=#737373 size=3></FONT><BR><FONT color=#737373
size=2> </FONT><BR><FONT color=#737373 size=3><BR></FONT><BR><FONT
color=#737373 size=2>---<BR>Outgoing mail is certified Virus
Free.<BR>Checked by AVG anti-virus system
(http://www.grisoft.com).<BR>Version: 6.0.524 / Virus Database: 321 -
Release Date: 10/6/2003</FONT><BR><FONT color=#737373
size=3><BR></I></FONT><BR></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>