Andy,

        Imagine as if they where two remote controls that you put "head to head"
and communicate with each other.
        So, I can=B4t use an optoisolator.
        If I connect an I.R emitter to one PIC, how do I connect the detector to
the other one ?
        I mean, supossing no interference (wich means no filtering), do I have t=
o
amplify the
singal the detector receives ?

                Gabriel.-





-----Mensaje original-----
De: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]En nombre de Andrew Errington
Enviado el: Lunes, 01 de Julio de 2002 00:11
Para: PICLIST@MITVMA.MIT.EDU
Asunto: Re: [PIC]: A bit more on "How to implement a Infrared
communications"


Hello,

If the devices are so close then you could do as you originally
suggested, and have an LED and detector close to each other.  There is
no better way (unless you tell us a little more about the nature of the
system).

My only further suggestion would be that you consider using an
optoisolator.  These are simply devices that contain an emitter and
receiver in a single package.  They provide good electrical isolation
and are easy to handle and wire up.  With this configuration you can
almost treat the two devices as if they were physically wired together.

Hope this helps,

Andy

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