On Friday 03 July 2015 10:07:35 Peter C. Wallace wrote: > On Thu, 2 Jul 2015, Gene Heskett wrote: > > Date: Thu, 2 Jul 2015 23:02:31 -0400 > > From: Gene Heskett <ghesk...@wdtv.com> > > Reply-To: "Enhanced Machine Controller (EMC)" > > <emc-users@lists.sourceforge.net> > > To: emc-users@lists.sourceforge.net > > Subject: Re: [Emc-users] More progress > > SNIP---------------------------------------------------------------- > > > > Peter C Wallace, is there a way we could make a fixed duty cycle of > > 50% in the 5i25 while allowing the variable frequency we need? > > For testing you can do this by selecting the stepgens quadrature > output mode (but you have no direction signal so can only go one way > with a step/dir drive)
I don't think its needed now Peter. Jeremy had to be mistaken when he said he had to double the drivers .ini scale to get it right. Which would not be caused by double stepping, but by half as many steps as the driver needed. As for the SW4 toggling to trigger a calibration, I was not in a position to see OR feel the lovejoy jiggling when I did it. But it did seem that the motor was a little quieter afterwards, but at the same time I found I was hitting the motor with about 4.5 amps, so I cut that back to the nameplates 3 amps. Which should have reduced the noise somewhat too. Then, since I had that motor set for a /64, I set it back to a /32, and cut the scale in half, then spent an hour adjusting the scale so the a 10mm move was within .005mm of a 10mm move. Added a .005mm to the backlash until that was gone. Something in the .0385 range seemed to make it pretty spot on. And I cam move about 1.25 meters a minute, lots faster than the smaller mill. My trip to Bridgeport didn't yield what I needed in db25f connectors to match the mach3 BoB, so I'm still on the older, slower BoB. I did get some one dot per hole perfboard to make the encoder with, and have that about 15% wired. I also found a wall wart, 5 volts & 1 amp that had my name on it for $0.86 at Goodwill. Thats enough to run the leds and the pullups for the OC photo-transistors. Those leds are hungry, 50 to 60 ma needed each. But with company coming in on the 7th, its getting real as I need to fire up the deck washer & kill some green mold, amoung at least 20 other things. And of course its raining again... So this may sit, other than doing the lcnc install on the box Patrick is bringing, until I have time to finish the encoder optics. And of course it wouldn't me me if I didn't demo it cutting air. :) However, if push came to shove, I could carve perfectly usable Mahogany with it as soon as I can get the jig mounted square, AND get the wood off the truck that hasn't been ordered yet. ;-) Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> ------------------------------------------------------------------------------ Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide you with the tools and support that you need to offload your IT needs and focus on growing your business. Configured For All Businesses. Start Your Cloud Today. https://www.gigenetcloud.com/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
