RE: ir transmitter some success

["Des Gibbons" <des@xxxxxxx>]

Hi Ian,


Hope Fatherhood is treating you well ;)

Insanity is a place I'd rather avoid so I'll knock that one on the head
:)

I take it there is nothing on your webbie, or is this something to do
with
the IR extender project?

I assume you are using a pic in each receiver to decode the IR signal
and
then adding a station-id and sending the command to a master device
which
can then transmit to the destination. The master device controlling the
transmissions of each pic to prevent collisions? If so are you using
RS-485
between PIC's? I noticed on your IR extender project that you have run
out
of registers for the data, is it a case of going to a better PIC, or
using
an EEPROM as a cache?

Sorry for all the questions, don't rush to reply, I know what it's like
;)


Cheers, Des.

> -----Original Message-----
> From: Ian B [mailto:Ian@xxxxxxx]
> Sent: 02 June 2002 20:41
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] ir transmitter some success
>
>
> 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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>>
>
>
>
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