Since I've got the lid off my pp again anyway (flex-coupler and my new HDPE flange nut on Y) I was thinking about installing a "Zero" switch on Y - just to tell the controller when it's reached home. I found a jpg on my 'puter that shows a wiring diagram for limit / home switches on all 3 axes. So, the Question: If I just want to use it for Y-Zero, it looks like it's a "Normal Open" switch, simply wired between breakout ports 11 and ground. Is it really that simple? Attached files
Dorsal, Should be really simple because all you are doing is sending a signal to stop that axis I was looking through the manual for the easy cnc board and this is what they had shown. The show a switch for each side of each axis but of course they are both wired together and send the same on/off signal so it should be fine just using one as a home switch. One thing I would recommend is to turn your soft limits on in mach3, that way if it get close to the switch it will slow down and ram into it before it stops. Mark Attached files
Soft limits just slow the Axis down? So if I had a wobble spot at the start side I could slow it down at the ends of the Y axis??? E-T
Soft limits slow the axis down right before it would normally hit the limit switch. You would set up your soft limits a little bigger then the safe cutting area but not as far as the switch, that way if you lose steps it will have a buffer area of slowing the axis down for a sec before it closes the limit switch. Mainly for fast machines so that you don not ram the switch. I guess you could do that too but it would always run slow in that area and I believe that you have to scale the setting down proportionally, which means that it would also go slower on the end of the other side of the axis. Mark
It's pretty much that simple yes... I emailed easycnc once and got a resonse on how to wire for software switches, marks diagram will work for HARDWARE power CUT (ie you will need to open the circuit via hardware to allow power to flow again). The pins are something close to what you have laid out... let me see if I can find my email .. I posted it on rcgroups.
tvcasualty's posts were http://www.rcgroups.com/forums/showpost ... count=1684 and http://www.rcgroups.com/forums/showpost ... count=1687
