i m trying to measure speed of objects using LDR/photodiode connected to
interupt pin n a light beam is focussed on it. when a object passes d light
beam,d voltage at that pin will change but only for some milli seconds n i
want to calculate that time.
plz help.
i think this time i m more clear abt my problem n u guys will be able to
help me.
thank you
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