[sdiy] Seeking project ideas for my class

[ASSI]

On Sunday 18 April 2010, Aaron Lanterman wrote:
> On Apr 12, 2010, at 12:17 PM, Harry Bissell wrote:
> > one LED with four photocells around it might not be ideal, LEDs
> > can be quite directional. Might need a really diffuse LED ???
> > 
> > I had trouble with two photocells and one LED in the middle,
> > ended up with TWO LEDs, one directly facing each photocell...
> 
> Thanks for the warning!

Actually that means you'd now need to match LED for light output (OTOH 
the matching of the photo resistors might be much worse).  I'd be more 
inclined to use a thick sheet of PMMA and build a light guide out of 
that.


Achim.
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