[chbot] Anyone tried LEDs as light sensors

Charles Manning manningc2 at actrix.gen.nz
Mon Nov 10 20:48:40 GMT 2008


On Tuesday 11 November 2008 09:38:17 QtuTrains wrote:

> I wonder if one can use a trio of LEDs (red, green, blue all with
> coloured housings) to make a colour sensitive light detector....

I don't see why not. Coloured filtering works in both paths.
Of course the different justions will perform differently so you would likely 
need some sort of gamma correction.






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