Yes. I am thinking about a way to make sure that there won't be a 1
for a 0 and vv.. I think about using a cylinder and placing the LDR on
the one side and a lightsource at the other one. Then we need some way
to interrupt the beam effortlessly.

> I went through the same train of thought recently.  Light-sensitive
> pushbuttons are definitely cool.  Ended up using pushbuttons,
> though.  Rationale: If there is any chance of a false positive or
> false negative, the classiness of the no-contact approach isn't so
> classy. --  Timothy J. Weber http://timothyweber.org



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