Re: Home / Limit switches

On 25 Jan, CAD_CAM_EDM_DRO@egroups.com wrote:

> The current discussion on g-code and coordinate systems has me
> wondering about what switches are really needed on the machine
> axes.
>
> Does anybody out there omit the home switch?

I've certainly never felt the need for a home switch.

As far as limit switches go, rather than two switches on the end of an
axis and a suitable "bump" to trigger them, I use one switch in the
middle of the axis and a "bump" at either end.

Less wiring and neater overall. Also, it's easy to add another "bump"
when the limit changes. ( For example, when the chuck jaws are opened
so wide that they'll strike the table )

Alan

--

Alan Rothenbush | The Spartans do not ask the number of the
Academic Computing Services | enemy, only where they are.
Simon Fraser University |
Burnaby, B.C., Canada | Agix of Sparta