> I need tt measure distance somehow - i.e. whether there is an object
in
> front of a sensor or not... is it possible to use a PIC to measure a
very
> rough calculation of reflection distance, - you know the same way
one of
> those tapeless tape measures work?
>
> anyone any experience/ideas?

Sharp makes an IR sensor (#GP2D12) that gives an analog voltage out
you can measure with an ADC on any PIC. The range is 8cm to 80cm for
that particular part.

Tim

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