Re: ir transmitter some success

["Frank Mc Alinden" <armagh@xxxxxxx>]

Hi Ian
            Can Bus
was developed by Bosch . I first heard of it at work
wiring plc controllers . Microchip have a can bus controller and 3
wires
>from
Microchips site for can bus.

Frank

----- Original Message -----
From: "Ian B" <Ian@xxxxxxx>
To: <ukha_d@xxxxxxx>
Sent: Sunday, June 02, 2002 8:25 PM
Subject: RE: [ukha_d] ir transmitter some success


> I was trying to have one receiver unit but many receivers (TSOPs). If
the
> receiver started hearing from one TSOP it would ignore the others. I
have
a
> bald patch to show my lack of success.
>
> I did look into CEBus (is that the same?) but it was expensive on
hardware
> and I am as always on a budget this wan not good. I think the way I
am
going
> with the PIC and a 485 multi master bus is a winner. I have even found
a
way
> of cutting down on reflection problems when the bus is not quite as
daisy
> chained as it should be.
>
> Ian
>
> >-----Original Message-----
> >From: Frank Mc Alinden [mailto:armagh@xxxxxxx]
> >Sent: 02 June 2002 09:56
> >To: ukha_d@xxxxxxx
> >Subject: Re: [ukha_d] ir transmitter some success
> >
> >
> >Hi Ian
> >           
What do you mean by collisions ? Also did you by chance read
a
> >previous post by Dave Mc laughlin regarding Can Bus . Now thats
something
> >worth having a look at . Apparently works as a multi
master   system were
> >the unit with highest prioirity message gets control of the bus
no
polling
> >required. Sounds good eh?
> >
> >Frank Mc
> >
> >----- Original Message -----
> >From: "Ian B" <Ian@xxxxxxx>
> >To: <ukha_d@xxxxxxx>
> >Sent: Sunday, June 02, 2002 6:40 PM
> >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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> >> >
> >> >
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