Examples of limit/home switches

[DAB_Design]

Does anyone have any pictures or links to what they are using for limit/home switches. And maybe photos of how they are mounted and triggered.

[CNCadmin]

I will soon as I have to add them myself.

[sol]

Here's an image of the Z axis' limits; they are inexpensive micro switches from Mouser.com. which are mounted back to back. Switches are all wired in series and are Normally Closed. The switches are screwed into the Z chassis and the moving body bumps into the switch's lever. In this image Z is about to trigger a limit. There is a stop on the top end of the axis which hits the top switch's lever when the Z is all the way down.
Simple cheap effective
(There are some pics on my site of some embarrassingly shoddy ones made from coat hanger wire and cheapo switches...but they worked .)

Oops Just realized this is a mini-mill thread, not DIY, oh well

[DAB_Design]

sol, actually, I'm glad you posted it. Any and all ideas will help with what I decide to go with.

Is that only 1 lead going to the switches? How are the wired to the controller?

[JFettig]

Heres a pic of one of my home switches(can be used as limits too)

heres a video in quicktime format(what my camera saves as) search google for quicktime alternative if you dont like quicktime.
http://jfettig.wc101.com/cnc/homing.MOV

Jon

[Swede]

Here's what I did for some cheap, adjustable limit switches:

See http://www.5bears.com/cnc05.htm for details. If you can protect them from swarf and oil, they're simple to do.

[sol]

Originally Posted by DAB_Design Is that only 1 lead going to the switches? How are the wired to the controller?

The switches have two wires to them; the orange sheathing encloses the wires, jpeg compression kind of smeared the detail.
They are wired to a parallel port input pin (pulled high w/ a 10K resistor) and to the parallel port's ground. Since the switches are normally closed the p.p. pin sees low until any one of the switches is hit and opened. Then the pin goes high and the software stops the Geckos.
Here is a recent thread that goes into a bit of detail...
http://cnczone.com/forums/showthread.php?t=5879