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

Erik,

I use proximity sensors. I like the way that they mount. CNC router
manufactures like Multicam use proximity sensors.

Proximity sensors require a 10 to 30 volt power supply. Plus you will need
to convert the output signal back to 5 volts.

The break-out board that Jim Cullins makes for me has the proper voltages
along with the 5 volts for the Gecko drives.

If you are interested, I can send you a couple of pictures.

Bob Campbell

----- Original Message -----
From: "Erik Reikes" <ereikes@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, September 30, 2002 4:18 PM
Subject: [CAD_CAM_EDM_DRO] Home/Limit switches : Micro switches or optical
interrupters?


> 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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