Anyone know of a non-contact distance sensor that can measure up to say=20
1 inch?  I built a machine for maker faire (in less than 2 weeks) that=20
lets people draw on a touch screen an that will get printed with=20
frosting on a cookie.  But if the cookie is not flat (rarely are they=20
really flat), there are issue with the frosting not sticking properly in=20
some corners or sharp curves.  I'm thinking if I can map the surface of=20
the cookie quickly before printing each one, I can have the Z-axis track=20
the cookie's "terrain".  This is a fun project so low-cost is important.

Cheers,
-Neil.

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