[sdiy] LDR optocoupler blowout

[Matthew Smith]

Quoth james murray at 20/09/12 05:30...
> I've used both and found the blowout ones to be actually a bit hit or
> miss. I ended up needing to always test them first just to make sure
> before putting them into circuits after I had done up a bunch of
> things for this synth I built and then checked and discovered a few
> were non-functional. They work really well though.

With the slow response of LDRs and the regular means of controlling LED 
brightness being PWM, I wonder if these could be used as a digitally 
controlled resistor, assuming that one clocked the PWM comfortably above 
the response time of the LDR. Just a thought.

-- 
Matthew Smith

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