Re: [CAD_CAM_EDM_DRO] Home/Limit switches : Micro switches or optical interrupters?

Erik,
I would use Microswitches, as an optical switch could be
very sensative to dirt. I've had problems with high
speed computer printers using optical switches when the
photo detector openings could get covered with paper
dust.
Bill Higdon

> I am slowly but surely progressing on my servo CNC conversion and I
> have come to the question of limit switches.
>
> Are most people using micro switches or optical interrupters to
> determine their home position? What kind of repeatability in home
> position is required/attainable?
>
> Micro switches seem like they would be easier to implement while
> optical interrupter probably have greater accuracy and no moving
> parts. Right now I am leaning towards optical interruptors with a
> small tang mounted on my table to trigger the interrupter, but
> thought the list might have some thoughts on why microswitches are
> the greatest thing since sliced bread.
>
> TIA
>
> -Erik Reikes
>
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