Re: IR receiver fro Bang Olufsen (455 kHz carrier frequency)

[James A R B. <jam...@gm...>]

Tsop7000 on standard internet homebrew rs232

Has worked for me for years on rs232.... Beo5 beo4 etc

I wouldnt go with a usb homebrew.... Tried something, but a beo repeats without a space, so ended abandoning that

Hardest part was finding a rs232 header to connect to mb.

James

On 3 July 2016 17:27:29 BST, Bengt Martensson <bu...@be...> wrote:
>On 07/03/16 17:43, Sof...@qu... wrote:
> > Hi
> >
> > Does anyone know a IR receiver (with 5V supply voltage) that can be 
>used to capture the carrier signal (*without* demodulation) of Bang 
>Olufsen remote controls?
> >
> >>From Vishay, I know TSMP58000 
>(http://www.vishay.com/ir-receiver-modules/list/product-82485 ; non 
>demodulating, but only up to appr. 60 kHz according to datasheet) and 
>TSOP7000 (http://www1.futureelectronics.com/doc/VISHAY/TSOP7000.pdf ; 
>455 kHz ok, but demodulating).
>
>I do not know of any "IR receiver" of that type either. When I looked
>at 
>it some time ago, it appears as if (most?) photo _transistors_ are not 
>fast enough either. So the only thing that remains would be an IR photo
>
>_diode_, like BPW41N (raise, fall time 100ns, so THAT should be fast 
>enough). When I experimented with one such, it had extremely bad 
>"range", < 1cm! So it should probably be combined with some amplifier, 
>like a standard bipolar transistor.
>
>If you are looking for an (expensive) ready built solution, look at 
>CommandFusion, which captures these signal without problems. It is 
>supported by IrScrutinizer. Price and availability in *.de is a problem
>
>though... . IIRC, some but not all of GlobalCache learner can do it
>too.
>
>But do not forget that you download most of those signals directly from
>
>Internet anyhow!
>
>
>Greetz,
>
>Bengt
>
>
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