i've made one with a TLE5012 chip. works for me up to 32krpm. i'm using SPI
interface, but the chip also has ABZ output
https://youtu.be/SIhoIOcmU-c

/dmitry

On Sun, Mar 27, 2022 at 10:09 AM andrew beck <andrewbeck0...@gmail.com>
wrote:

> Hey guys
> I have a spindle encoder I want to set up for my 10000rpm spindle on one of
> my cnc Mills
>
> I can laser cut a encoder disc and get some gear sensors.
>
> Max dia of the disc due to size constraints is 150 mm dia
>
> Questions are mainly design ones.
>
> What width of slots do I need in encoder disc?
>
> And is bigger dia better for higher resolution?
>
> Also what resolution do I need for good reliable rigid tapping?   I could
> probably laser cut a disc 140mm dia with 400 slots 1mm wide each if that
> would let the sensors work OK.
>
> But I don't really know what the sensors can pick up.
>
> Anyway if you guys have already done this I would appreciate the advice.
>
> Cheers
>
> Andrew
>
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