From: Mark Lloyd
Subject: Re: IR remote control with a computer over long range
Date: 28 Dec 2002 10:46:37 -0600
X-Newsreader: Forte Agent 1.91/32.564
On Fri, 27 Dec 2002 22:30:13 GMT, Chuck Y
>You don't need to modulate the video. Use Coax. For component,
>use 3 coaxes of EXACTLY the same length.
You don't have to, but there can be advantages, such as.
1. Works on one coax cable, rather than 2-6 cables. While it's not
much harder to run multiple cables at the same time, you may be able
to use an existing one.
2. Independant selection (from multiple channels) at each TV.
3. Works on TV's without A/V inputs.
I may install a (non-modulated) system someday, although it would mean
replacing 3 TV's.
>You don't WANT to modulate the video if you don't have to.
Yes, NOT mudulating does get you a better picture*. You still have to
give up the other advantages.
>Google for IR stuff, there are plenty of things that let computers
>"See" IR and IR receivers can be run pretty far, wiring wise. CAT
>5 is probably overkill, thus safe.
>As far as receivers, there are many many receiver chips cheap at
>electronics houses (jdr, jameco, digikey, etc, etc). I've seen (and
>ignore) projects that can use the IRDa porton the computer to send
>to it. Google.
>Mark Lloyd wrote:
>> On 22 Dec 2002 09:48:41 -0800, email@example.com (Nil Einne) wrote:
* - I've just got a setup that allows me to use the component video
connections for playing DVD. I can switch easily between composite and
component video, and there's an obvious difference.
>> 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.
>> 2 days until the winter solstice celebration
>> Mark Lloyd
>> "There's no more proof for the existence of God than there is for the existence of the
>> Easter Bunny. That's right. The Easter Bunny."
"religion is a socio-political institution for the
control of people's thoughts, lives, and actions;
based on ancient myths and superstitions perpetrated
through generations of subtle yet pervasive