A simple 10cents LDR could work. Directly on a PIC ADC input? probably not due to the impedance of those LDR. Just put an OP-AMP (or maybe transistor) between your LDR and your PIC.
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A simple 10cents LDR could work. Directly on a PIC ADC input? probably not due to the impedance of those LDR. Just put an OP-AMP (or maybe transistor) between your LDR and your PIC.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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Here is a sample similar to what mister_e mentioned.
Here is a link to find just about anything about "lights & components".
http://jp.hamamatsu.com/products/nod...ng=en&ext=html
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"If the Earth were a single state, Istanbul would be its capital." Napoleon Bonaparte
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Not as cheap as the LDR... TAOS (Texas Advanced Optical Systems - or something like that) has some light-to-voltage & light-to-frequency converters for a few US$.
http://www.mouser.com stocks several part #'s
Arch
"Data sheets? I ain't got no data sheets. I don't need no data sheets. I don't have to read any stinking data sheets!"
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