Are you using one of these?
>
> http://www.allegromicro.com/en/Products/Categories/Sensors/ats.asp
>
>
Yes, ATS642. I made a tiny little potted board with a load resistor and a
comparator on it.

The target is indeed an ABS reluctor ring. The tooth-gap spacing is pretty
close to 50:50, as far as I can tell.

My single channel solution has been in use for some time now and has proven
to work very well. I just wondered if adding a second one (in the right
place, and that might be tough to do) would give me the directionality that
grey code provides.
--=20
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