On Saturday 03 December 2016 09:50:03 Jon Elson wrote: > On 12/02/2016 11:29 PM, Gene Heskett wrote: > > In order to not have yafu at doing this encoder right, I have > > discovered that 1. The width of the tooth of a 6" 60 tooth gear is > > pi*.1, or 0.314159265358979324" per full tooth. 2. Needed is a > > quadrature signal, so the center to center distance between > > ATS-667's is > > Well, I just made mine with adjustable slots, hooked up a scope and > adjusted until the quadrature was about right. Now, I CANNOT remember > how I spun it, as the motor had to be off to access the sensors. > Might have just given it a spin by hand. > > Jon
I was just turning it with a crescent wrench on a chuck jaw, had a whole screenfull of halmeters watching things. My wakeup call was when the encoders position output didn't increment or decrement as expected. I did look at the adjustable aspect but came to the conclusion that I didn't have room enough in there for that much mechanical gingerbread. So just calcuated the groove position by halfassedture and carved it. I can take the devices and pcb off it, with the removal of a screw and pry them loose from their go-2 mounting, take the alu piece back to the mill and move the a/b pair about .0785" closer together in round figures. I'll take one of those figures you snipped thats bigger than they are wide, and write a quick loop to leave the correct width of alu separator, then push them against that side of the separator as I re-glue then in the groove with uv curing resin, its lots faster than go-2. the end result should be that they are 0.0785", give or take a few angstroms from that figure closer together, and it oughta work. The z unit is in the pcb stand off block on the left side of the curved bar, so thats a separate screw. if I can get that to break cleanly, its also glued, then I leave the pcb on the other end and have a sturdy enough assembly hanging there while I work on the curved bar. Thats the plan anyway. But I think I'm about out of the uv resin, and I am sure out of B-12 (I can get both at CVS) that I megadose with because metformin for the diabetes flushes it out of you, and a lack of B-12=killer leg cramps that can cripple me up & put me in a walker for days at a time. I wouldn't wish that on my worst enemy if I had one, but I've now outlived that SOB about 8 years now. The singular advantage to getting old is running out of enemies. :) Cheers Jon, 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> ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
