Thanks all for the advice. I hadn't considered the case of reversing the spindle a bit, that does shoot that idea down. Although I've enjoyed Gene's spindle encoder adventures vicariously I don't think that's a path I want to walk, so at this point my plan is to obtain a 1:1 timing belt pulley and use the Z pulse in the encoder I already have. Hopefully that should be fairly straightforward.
Thanks again and I'll let you know how it goes. Scott On Tue, Nov 13, 2012 at 12:50 PM, andy pugh <bodge...@gmail.com> wrote: > On 13 November 2012 18:34, Gene Heskett <ghesk...@wdtv.com> wrote: > > > I'd have reservations about index sensing at servo rate, depending on the > > top speed of the spindle, and try to set the mesa to respond in real > time. > > The Mesa encoder counter responds in Mesa time, and zeros the counts > instantly. The next time that the FPGA is polled the return value is > the number of counts since the index. > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > > ------------------------------------------------------------------------------ > Monitor your physical, virtual and cloud infrastructure from a single > web console. Get in-depth insight into apps, servers, databases, vmware, > SAP, cloud infrastructure, etc. Download 30-day Free Trial. > Pricing starts from $795 for 25 servers or applications! > http://p.sf.net/sfu/zoho_dev2dev_nov > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
