2009/6/30 Haberler Michael <mai...@mah.priv.at>:

> The code rings are printed on plain paper with an inkjet printer, and
> laminated into a plastic pouch

Interesting. When I tried a similar approach using clear tape I found
that the reflectivity of the tape in the frequency range of the
detectors was so high that the underlying colour was irrelevant.

Is there any sign of interference from your VFD on the sensor pulses?
I am finding that a bit of a problem.

-- 
atp

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