Hi Everybody,

Someone of you mentioned that an ordinary led can be used as a light sensor.
How sensitive is that? How fast is it -- I mean can be it used as a test
measurement device for a really fast movements (sometimes nearly as fast as
the speed of sound). Which colour is the best for this (in terms of more
sensitive, more response). And finally as far as I know it gives a very
small signal you can measure, so would you use a simple analogue amplifier
to attach it to the PIC?

Thanks,
Tamas


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