From: Joseph Legris
X-Mailer: Mozilla 4.77 [en]C-SYMPA (Win95; U)
Subject: Re: Remote Control - Any Idea?
Date: Mon, 04 Nov 2002 11:00:41 -0500
NNTP-Posting-Date: Mon, 04 Nov 2002 11:00:50 EST
Organization: Bell Sympatico
Keith Wootten wrote:
> In message , Mike
> Poulton writes
> >On 04 Nov 2002, Keith Wootten said:
> >> In message , _Jung
> >> writes
> >>>I was wondering if there can be any way I can individually control
> >>>each VCR with a remote.
> >>>Any ideas?
> >> Glue a cardboard tube - eg a fax roll inner - onto your remote control
> >> to restrict the IR beam. Make appropriate noises as you point and
> >> shoot; "Rewind or die, VCR scum".
> >Or use a lens to collimate the beam.
> Not so good, really, you don't want to concentrate the beam so much as
> mask it from where it's not wanted. The IR receiver chips will have
> AGC, and the unwanted receivers are more likely to find a signal from a
> reflected concentrated beam than from a reflected power-reduced masked
> beam. The wanted receiver, of course, sees the IR LED line-of-sight
> through the tube.
> A tube's a lot easier too.
> I have actually done this, although with only four IR receivers (and not
> on VCRs). They have a wide AGC range, and ambient lighting will affect
> their apparent sensitivity. I painted the tube matt black inside on a
> whim, but I don't know how necessary that was.
> Keith Wootten
Maybe add a visible laser "gun sight" so you know where you're aiming
before pressing the button.