On 11 November 2015 at 16:32, Dave Cole <linuxcncro...@gmail.com> wrote:
> That's basically a crankshaft position sensor.

Some CPSes use a magnetic track (I have a few in a drawer).
They typically use a missing tooth (normally just a shorter tooth,
when it is a tooth) for index.
It would be nice to add missing-tooth index to the linuxcnc encoder.

> The gear pitch needed is .160 so at full quad the resolution should be
> .040 or about a mm.  There is a data sheet link on the Allied
> Electronics page.

You will get a distorted but usable quadrature for quite a range
around that, however.

-- 
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto

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