Re: DIY IR receiver - finding parts & advice.

["Justin <justin@xxxxxxx>" <justin@xxxxxxx>]

--- In ukha_d@xxxxxxx, ian.bird@c... wrote:

> The circuit you posted is a complete receiver and transmitter that
will
> replace all your Xantech stuff. From your post I assume you only 
want the
> receive bit, am I correct?

Um...not sure now :p

> Assuming I am you need to find out whether the Xantech stuff pumps
around
> modulated or demodulated signal. 

Can I assume that as a regular emitter can be hooked up directly to a 
Xantech receiver the output is modulated?

I don't know as sadly I cannot afford
> Xantech stuff. 

Neither can I really - had to sell a kidney :-)

Demodulated means the IR 'carrier' (the 38KHz bit present
> when the IR has to be sent) has been stripped from the signal and 
the
> receiver simply puts out an on or off for relatively long periods 
of time.
> This is how the epanorama circuit works and it is the GP1U52X which
does
> the stripping. The 7555 simply puts the carrier back onto the 
signal for
> sending out of the IR transmitter so the equipment can recognise
it.

Thanks for the summary.

> I believe Comfort do an IR receiver that may work for you although
I don't
> know the code for it. If you don't have an answer by tonight let me
know
> and I will look it out.

Well I'm really getting into this soldering lark (it's all your fault 
BTW ;-)), so I would prefer to find a homebrew solution.

Cheers,
Justin.
                          
>                      
<justin@gadgetjun        
To:       "ukha_d@xxxxxxx" 
<ukha_d@xxxxxxx>                            
>                      
kie.net>                
cc:                                                                  
                 
>                                               
Subject:  [ukha_d] 
DIY IR receiver - finding parts &
advice.                           
>                      
28/01/03 
12:09                                                                
                                 
>                      
Please respond 
to                                                                   
                           
>                      
ukha_d                                                               
                                          
>                                                                    
                                                                  
>                                                                    
                                                                  
> 
> 
> 
> 
> Just before Christmas a purchased some Xantech bits from the 
States, one of
> the
> items, a "Hidden Link" IR receiver, has died :(
> A replacement is most likley out of the question due to shipping 
costs so I
> 
> thought I would look around for some homebrew solution I could put
in the
> Xantech enclosure.
> 
> I was thinking of using this circuit:
> http://www.epanorama.net/documents/ir/irremote.html
> 
> Anyone using that circuit? Is there something better I could/should
use?
> I don't know where to get a GP1U52X (tried Maplin). Any pointers
or
> equivelents?
> This would be wired back to a Xantech block so I guess would need 
to get
> convert the 12V input to 5V but I'm not sure how to do that!
> 
> Any advice appreciated.
> 
> Cheers,
> Justin.
> 
> 
> 
> 
> 
> http://www.automatedhome.co.uk
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