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Andy
I posted
a
link to a site that explains Leds,ir leds same thing , Mark Harrison had a
look
and thought it was pretty good .This guy has wrote heaps of books .Dont be
encouraging KEITH write books not until the switcher is
finished.
----- Original Message -----
Sent: Monday, April 29, 2002 1:52
AM
Subject: [ukha_d] Re: Idea for IR
zoning
with HV
Keith,
I will be at the meet, and while I'm
there if you want me to have
your babies I will :D
Have you ever
thought about doing some 'basic electronics for
dickheads' (that's me
the
dickhead not you!!!) web pages or a book?
You've explained 2 things to
me
that I've been unable to find out for
myself via the web. I appreciate
time is the key factor, but you know
what you are
doing!
Andy
--- In ukha_d@y..., "Keith Doxey"
<lists.diyha@b...> wrote:
> Will you be in London for the meet
?
>
> If so I will knock one up and bring it along.....and it
will be on
Veroboard
> :-)
>
> Keith
>
>
www.diyha.co.uk
> www.kat5.tv
>
>
> -----Original
Message-----
> From: andy_powell_is [mailto:ukha@b...]
> Sent:
28
April 2002 16:41
> To: ukha_d@xxxxxxx> Subject: [ukha_d] Re:
Idea
for IR zoning with HV
>
>
> Keith,
>
>
Thanks, that makes it clearer... but as you can see from the
message
> I
sent before this on... when it comes to electronics i seem to get
>
everything wrong :(
>
> What I can see is the fact that this
would work out a lot cheaper
> than the 250 odd quid asking price for
the Homevision expansion
> board, however ... I'm a little scared at
poking about with
> homevision's ports, it would be an expensive
mistake
if I buggered
> it - which makes the 250 odd quid not look too bad
considering the
> cost of replacing my Homevision if I killed
it.
>
> Andy
>
> --- In ukha_d@y..., "Keith
Doxey"
<lists.diyha@b...> wrote:
> > Hi Andy,
> >
>
> simple explanation coming up.....
> >
> > The IR LED
requires power to emit infra red.
> >
> > This power is
normally supplied from the IR out jack.
> >
> > There are
two ways of supplying this power....
> >
> > 1. Switching
the +5v supply and connecting the LED between that
and
>
a
>
> permanent ground.
> > 2. Supplying a permanent +5v supply and
switching the ground.
> >
> > Either method will turn the
LED Off and On.
> >
>
>
>
>
>
For
more information: http://www.automatedhome.co.uk
>
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