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From: Mark Lloyd
Subject: Re: IR remote control with a computer over long range
Date: 23 Dec 2002 12:56:31 -0600
X-Newsreader: Forte Agent 1.91/32.564
On 22 Dec 2002 09:48:41 -0800, firstname.lastname@example.org (Nil Einne) wrote:
>My computer is in a diff from from my TV and they are fairly far apart
>(direct is perhaps about 15-20 m). Anyway, I have a Radeon 8500 with
>TV out and am planning to put up cables so I can watch movies from my
>comp without having to move it as I currently tho. I don't really want
>to watch that much but it well be useful and I have a fair amount of
>Anyway, another thing I've been considering is adding a remote control
>so it is easier to pause, rewind etc. I don't really want to do much
>or spend too much money so a RF wireless keyboard or mouse is out of
>the question (there is a good chance they will get broken too). What
>I've been thinking of is a IR receiver. My computer has a IR
>connector. I think that this should be the easiest and best way to
>connect a IR receiver. I don't have one but could probably salvage one
>from an old VCR. If not, I will have to look at other sources of
>course but I'll discuss that if it happens (I'll see if I have any
>chance of doing anything first).
>Anyway the main issue I currently have is given the distance+many
>walls I obviously can't put the receiver at the comp. So this means
>the receiver will have to be in the lounge. But I'm wondering how to
>connect it to the comp. Wires are not a problem since I'm putting up
>some anyway but the distance is still too great. Will it be possible
>to just amplify the signal? Since it only needs to be one way, I'm
>hoping so. If so, could someone help in designing the circuit. I would
>assume however that even if I can do this, I will need a seperate
>power supply as it's probably a bad idea to run the +5V over this long
>distance. Will the quality of the receiver be very imp? E.g. a mouse
>salvaged one will def not do?
> Also, what kind of cable is recommended
>bearing in mind I don't want to spend too much.
You will need to use shielded cable (coax) or possibly twisted pair
(CAT5). You could use one coax instead of 3 if you had a modulator at
the computer (use a good one rather than one of the cheap ch3/4 ones
they put in VCRs).
>Or if the just amplify it isn't feasible, any other not too difficult
>or expensive solutions? I could make a receiver for a serial port or
>parallel but that will of course be more difficult. I have read that
>at low baud rates, RS-232 can support lengths of my kind.
>Thanks for any suggestions and help.
I don't need to do this, since I have a computer close to my video
system (not the main computer, but networked to it). If I did, I would
use the (wired NOT wireless) vedeo extender if I had one or put a
modulator at the computer and run a coax cable.
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