On Tue, 2009-10-06 at 23:40 +0100, Andy Pugh wrote: > 2009/10/6 Wayne Patterson <way...@wavelinx.net>: > > > The machine is also somewhat different then most. It is set up with a > > Quadrature drive. > > Unlike a Step and Drive pin. You have two pins the are turned on and off > > in sequence. > > Seems an odd way to do it, but I read that EMC supports that yesterday > looking for something else. I recall wondering at the time "why?" and > now I know. > > Stepgen mode 1, IIRC
I use EMC2 quadrature output on my Shizuoka mill: http://www.wallacecompany.com/machine_shop/Shizuoka/ which is used to drive the steppers in half-step mode. Basically, there is just an amplifier between EMC2 and the stepper. This gives me close to .0005" per step which is good for most projects, but a micro stepping drive with step/direction would be better. But, if I upgrade my mill, the plan is to just go with servos. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
