On 18 December 2013 03:37, John Alexander Stewart <ivatt...@gmail.com>wrote:
> > Was thinking that, while it was off, I could make up a large disk with > holes for the encoder. Would it be better to read off the 40 tooth gear on > the spindle?? To me, in my novice state, I'd think that was not as good, > but... If you are using the parallel port then 40 teeth might be as much as can be handled, but as you appear to be using a 7i76 then you don't have that concern. A 40-tooth gear is 160x better than the one-pulse-per rev that Mach3 uses. I set up a similar system to Jone Elson's Bridgeport on my Harrison, then immediately changed my mind and used a resolver instead: http://www.cnczone.com/forums/vertical_mill_lathe_project_log/109301-harrison_universal_miller_conversion-2.html#post1212335 There are eBay vendors selling the sensors, and they are trivial to interface to Mesa cards. They will only work with ferromagnetic gears, though. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
