Quote:
Originally posted by TerraMex
@Arcturius
Someone hasnt read the previous posts... we already stated that ideia. 
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Nevermind; I just skimmed your posts quick, and missed the part where you were talking about an LDR resistor, I just expected you to stay stuck on the IR idea.
Although, I must say that I think it would be the easiest to implement, since there will be no moving parts, and there will be an analog output, which is really handy for doing lots of different things.