YES NOPE9 ha scritto:
> I bought some cheepo $2 laser pointers at MicroCenter.  I am planning  
> to replace the 3 button batteries with a 5V supply.  Will I have to  
> current limit the supply ?  I find that shining the laser through a  


Hi,
I've been powering one of these via an output pin of a PIC16F648, with 
just a little resistor, say 47ohm. sounds good enough and is still 
working after some months...

<http://www.facebook.com/photo.php?pid=3011415&l=edc9803576&id=556805274>

:)
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Ciao, Dario
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Cyberdyne
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