RE: ir transmitter some success

["Ian B" <Ian@xxxxxxx>]

Hi Des

What you need is the system I am in the middle of building. It will
give
zoned input and output all down the serial port. It won't be
connectable
directly to HV or similar though (I don't think). It is a work in
progress
and time is the problem as always.

I ended up building this after trying to do collision detection with
logic
chips and effectively doing what you suggest. I decided this was a quick
way
to insanity!!

I wish you luck

Ian B

>-----Original Message-----
>From: Des Gibbons [mailto:des@xxxxxxx]
>Sent: 02 June 2002 07:38
>To: ukha_d@xxxxxxx
>Subject: RE: [ukha_d] ir transmitter some success
>
>
>Frank,
>
>
>OK, just to really make things complicated ;)
>
>Would it be possible, you're gonna love this, to reverse the whole
concept
>and use it for zoned IR input :) obviously each zone would need a TSOP
or
>similar, but is there a simple way of using trannies to indicate which
zone
>is active and send the data on its way. Collisions seem to be the
biggest
>stumbling block to me :/
>
>Obviously the LPT port would have to be bi-directional.
>
>/me scurries off to see how many pins are available on an LPT port
;)
>
>Cheers, Des.
>
>> -----Original Message-----
>> From: Frank Mc Alinden [mailto:armagh@xxxxxxx]
>> Sent: 02 June 2002 18:23
>> To: ukha_d@xxxxxxx
>> Subject: Re: [ukha_d] ir transmitter some success
>>
>>
>> Now thats Better Des
>>                                 
I cant see why not . So long as you dont
>> change the state of the  lpt  port  pins that are
being used for the
>> multiplexer while transmitting just the tx pin . Pin 4 which
>> enables the 555
>> i would opto isolate from the printer port.
>>
>> Frank Mc
>> ----- Original Message -----
>> From: "Des Gibbons" <des@xxxxxxx>
>> To: <ukha_d@xxxxxxx>
>> Sent: Sunday, June 02, 2002 3:51 PM
>> Subject: RE: [ukha_d] ir transmitter some success
>>
>>
>> >
>> >
>> > >
>> > > Sorry Des
>> >
>                
I just assumed serial . That shouldnt be a problem
>> > > ,selecting zones . I assume some other device is
generating
>> the ir 38khz
>> > > carrier?
>> > >
>> >
>> >
>> > errr, the LPT port :)
>> >
>> > http://www.czechin.com/minidisc/gener.gif
>> >
>> > Now, can they both be on the same LPT port is the question
:)
>> >
>> > Des
>> >
>> >
>> > For more information: http://www.automatedhome.co.uk
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>>
>>
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>
>
>
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