RE: IRDA Extenders

["Des Gibbons" <des@xxxxxxx>]

Hmmm, I had assumed that the distance was because the transmitter wasn't
transmitting a high level enough signal, not that the receiver, couldn't
receive a high power signal.

Do any nokia boxes use IRDA, might be able to find out specific components
>from

Des

> -----Original Message-----
> From: Keith Doxey [mailto:ukha@xxxxxxx]
> Sent: Monday, January 07, 2002 22:57
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] IRDA Extenders
>
>
> the "transmitter" in the OFA6 will be a PIC chip or similar
> microcontroller
> connected to some high power LED's.
>
> Transmission of IRDA is not a problem, with sufficient IR LED's and a
VERY
> big battery you could create a 1kW IRDA transmitter and toast anything
in
> front of it.
>
> The problem is finding a receiver that will work at greater than
> 1-2 metres.
> If someone could disassemble an IRDA box and find out what the
> receiver was
> then I could try to source one and see if I could get more
> reliable results.
>
> Keith
>
> -----Original Message-----
> From: Des Gibbons [mailto:des@xxxxxxx]
> Sent: 07 January 2002 22:46
> To: ukha_d@xxxxxxx
> Subject: RE: [ukha_d] IRDA Extenders
>
>
>
> How much is a OFA6, worth butchering to see what transmitter they use,
> assuming it transmits IRDA over long range?
>
> Des
> > -----Original Message-----
> > From: Graham Kiff [mailto:graham.kiff@xxxxxxx]
> > Sent: Monday, January 07, 2002 22:22
> > To: ukha_d@xxxxxxx
> > Subject: RE: [ukha_d] IRDA Extenders
> >
> >
> > As far as I know Keith, there are NO Pronto Codes for IRDA boxes
as the
> > Pronto is not capable of transmitting IRDA.  There is however a
> > code for the
> > OFA6 (URC-7560) which I can confirm works with the NTL  box.
> >
> > Cheers
> > Graham
> > (Hopeful that one day someone with crack the IRDA problem ;-))
> >
> > -----Original Message-----
> > From: Keith Doxey [mailto:ukha@xxxxxxx]
> > Sent: 07 January 2002 22:14
> > To: ukha_d@xxxxxxx
> > Subject: RE: [ukha_d] IRDA Extenders
> >
> >
> > Are there Pronto Codes for IRDA Set top boxes ?
> > Didnt someone on the HV list have a way of converting Pronto to
HV.
> >
> > Even if it cant learn it, it may be able to transmit it when
> told exactly
> > what to so.
> >
> > Keith
> >
> > -----Original Message-----
> > From: Ian B [mailto:Ian@xxxxxxx]
> > Sent: 07 January 2002 22:00
> > To: ukha_d@xxxxxxx
> > Subject: RE: [ukha_d] IRDA Extenders
> >
> >
> > Haven't checked but I cannot see HV being IRDA literate.
> >
> > I still haven't given up completely but am not doing anything
about it
> > either.
> >
> > Maybe when I have some more time and the current projects are
completed.
> >
> > Ian
> >
> > -----Original Message-----
> > From: Keith Doxey [mailto:ukha@xxxxxxx]
> > Sent: 07 January 2002 21:03
> > To: ukha_d@xxxxxxx
> > Subject: RE: [ukha_d] IRDA Extenders
> >
> >
> > Not much progress with the IRDA.
> >
> > I dont believe it will be possible to build a reliable combined
> repeater.
> >
> > The IRDA receiver responds to normal IR remotes as well, but
outputs the
> > modulated signal not the demodulated signal like the TSOP1838
does.
> >
> > The reception range of the TSOP is superb. Any angle and in my
> > house I cant
> > get far enough away for it not to pick up. The IRDA receiver is
> extremely
> > short range and at only 6 feet will just about receive if the
remote is
> > pointed DIRECTLY at it.
> >
> > The problem is with RECEIVING the IRDA signal as it was really
> > only designed
> > for short range and I havent been able to find out what receiver
> > is used in
> > the IRDA settop boxes.
> >
> > At the end of the day, I cnt guarantee that my IR repeater will
function
> > perfectly with all equipment and I dont know of any that are
> (sure someone
> > will correct me if I am wrong). What I am aiming for is a
> repeater that is
> > 99.99999999% reliable and will work with 99% of equipment.
> >
> > One possible workround it this...
> > Pick an unused "Standard Code" from Homevision, (there
are loads
> > that arent
> > used on UK kit so it shouldnt clash but will be found on most
universal
> > remotes. Create actions within Homevision to send learned IRDA
codes on
> > receipt of the standard code chosen.
> >
> > <PSUEDO CODE>
> > 	If <SomeYankIRCode_Button1> received then
> > 		Transmit IRCode <IRDA_Button1>
> > 	End If
> >
> > <PSUEDO CODE>
> >
> > (I dont know if HomeVision can successfully learn IRDA as I
> havent got the
> > means to test the transmissions but I am sure others have.)
> >
> > The KAT5 IR repeater can then relay the IR code from the handset
to
> > HomeVision (the switcher will have inputs/outputs for IR signals
> > to be sent
> > from/to HV). Homevision interprets the received command and sends
the
> > required code(s) to the IRDA kit.
> >
> > I dont know if that will definately work but it should be
possible IF
> > Homevision will learn IRDA.
> >
> > Keith
> >
> > -----Original Message-----
> > From: Stuart Whyte [mailto:lists@xxxxxxx]
> > Sent: 07 January 2002 16:41
> > To: UKHA
> > Subject: [ukha_d] IRDA Extenders
> >
> >
> > Ian/Keith,
> >
> > How are the IRDA Extender projects going?? Any further
developments??
> >
> > Cheers
> >
> > Stuart
> >
> >
> >
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