RE: Re: Idea for IR zoning with HV

["Keith Doxey" <lists.diyha@xxxxxxx>]

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@xxxxxxx]
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.
>




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