X2 CNC PARTS .... Best prices, best setup?

[Crevice Reamer]

CORRECTION TO PREVIOUS POST. I made a typo. The resistors solder into the DB-9 connectors NOT the DB-25.

You will need THESE 1/4 Watt 3.48K resistors for the 387:

3.48KXBK-ND

and THESE 1/4 W 2.8K resistors for the 270s:

2.80KXBK-ND

They only come in a pack of five, so about $1.

http://digikey.com/

what switches do you have now?

CR.

[CNC74]

CR,


The switches from this auction are the ones I have now. (quantity of 6)

http://cgi.ebay.com/ws/eBayISAPI.dll...m=260360389286

"CNC Limit Switches for stepper motor systems N. O."


And do I need the relays you mentioned on page 2 of this post?

Regards,

[Crevice Reamer]

I used 3 of those switches for home switches. It's more complicated, but those NO switches CAN be used as limit switches. I like to use NC limits and wire them in series as in the drawing. Enco has some simulated roller switches that cost about $3 each and can be wired either Normally Open or Normally Closed.

You COULD, since you're using stepper motors not servo motors, even forego the limit switches entirely and just set up the Mach3 software limits.

http://syilamerica.com/docs/Homing_V...%20Limits.html

Relays are handy if you want to have the computer do things from inside the program like turn the spindle on or off, or control a pump for flood coolant.

CR.