Hi,

I am trying to hack a mouse encoder to use as a shaft
encoder for a mobile robot. I removed the slotted wheel,
IR LED, and what I assume is a photo-transistor from a mouse.
The Phototransistor is housed in black plastic and
has three leads. I was wondering if anyone could give me
a circuit so I can interface the (photo-transistor ?) to
a PIC. I want to power the IR Led and then use the int on
change function of portb to record the pulses from the
photo-transistor. ( It mat not be a photo-transistor,
but that's my best guess)

I have spent several hours searching the net for a circuit
on how to do this, but no luck.
Any help would be appreciated.

Thanks,
Kevin

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