From: Ned Konz
Subject: Re: IR remote control with a computer over long range
Date: Sun, 22 Dec 2002 11:12:27 -0800
Organization: Posted via Supernews, http://www.supernews.com
Nil Einne wrote:
> Hi all,
> 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
> free time.
> 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.
> 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.
The Radio Shack 15-1925 is a remote control that uses UHF. From its manual
Your RadioShack 6 in 1 IR/RF Remote Control comes with an RF command console
that allows you to send commands to most IR (infrared)-controlled devices
from any room in your home, up to 100 feet away. You can use it to control
your TV, VCR, cable box, and even lights and appliances with Plug n Power
modules (not supplied). The 6 in 1 IR/RF Remote Control is preprogrammed.
All you have to do is tell it which TV, VCR, or other component s remote
controls you want to replace (by entering 3-digit codes), and it is
automatically ready to operate most of the same functions as the original
remotes. This manual includes a list of 3-digit manufacturer s codes for
TVs, VCRs, cable converters, compact disc players, satellites, and other
popular remote- controlled devices. The 6 in 1 IR/RF Remote Control s
features include: IR (Infrared) and RF (Radio-Frequency) Commands use the
remote control with the system s RF command console to control your IR
remote- controlled devices from up to 100 feet away, even through walls.
Reassignable Device Keys so you can control more than one of the same
type of device (two VCRs, for example). Fast Search when you control more
than one of the same type of device, lets you quickly search all programmed
manufacturers codes for that type of device until you find the code for
the specific device you want to use.