On Saturday 07 March 2020 14:08:27 Gene Heskett wrote: > On Saturday 07 March 2020 13:26:00 Jon Elson wrote: > > On 03/06/2020 11:13 PM, Gene Heskett wrote: > > > That cross patterned face is then a target to be machined > > > into the mount to locate it more precisely? > > > > Maybe, or just a place for epoxy to bond to. That face with > > the cross indentation is where the bias magnet is, > > The flat face nearest the leads is where the actual sensor > > chip is. > > > > > I'm in the house but I now seem to recall that its the > > > smooth side that's facing the gear in the lathe. > > > > Yes, that's the only way it would work. > > > > > Duh. It takes a 16mm projector lens and damned strong > > > light to read the text printed on the "branded face". What > > > the hell were they thinking? You're saying that the > > > depressed cross in the 5% smaller face is not the sensed face? > > > > Yes. > > > > > That the crossed pattern should be the face glued to the > > > mount? > > > > Yes. > > > > > In that event I also have them wired reversed polarity. > > > Which shouldn't hurt them as they are rated for up to 18 > > > volts of reversed voltage. > > > > Oh, that will make it even less likely to sense anything. > > Which with a reversed 5 volt supply doubly guarantees it won't work. > > Since it also has a half mic tantalum cap across the power pins, which > was the ony thing being powered at its native polarity, so I'm > starting from scratch since the pin half of the plug ejected the pin > while unsoldering every thing else, so a new 3 pin socket is sitting > in a thin puddle of jbweld in the toaster oven at around 145F to > hasten the cure. After skimming off the die fins etc and washing it > down with acetone for better adhesion of course. hour or so ought to > stick it, then glue on another ATS667, put the heat on it for another > hour and finish the wireing starting with tradeing ground and 5 volts > on the cable coming to it. And maybe I can test it yet today. If I > don't screw it up again...
I think I'm good, I have seen it work, and the whole thing is sitting in a puddle of jbweld with a piece of plastic tape for a spacer between it and the nail glued on the side of the drawbar cap. with a heater set on low and doing half the garage heating about 3" away. Not too hot but should get the stuff cured by noonish tomorrow. Not plugged in ATM so theres no cable pulling on it, only the bias magnet pulling it toward the nail. If it does pull it, the tape will stop it leaving a useable air gap. So far, so good, I might even have a 2nd near beer to celebrate! And I've found a good use for that toaster even I tried to anneal those tapered brass gib strips I put in TLM 3 or 4 years ago, set on 150, and on forever, it sets up jbweld in about 2 hours. Set on 450, it does a fair job on frozen french fries for the missus when she gets a hankerin for them. I might sample one or two but as a diabetic, they've not been on my menu for years. > > One thing is for sure though, I can't net the command-deriv to > joint-vel, its instant following error. Joint never moves, but will > move in that direction at a good clip after being reset and > re-enabled, so its the backlash move that triggers it. the following > error occurs when an axis is reversed. But thats a different problem > for another day and thread. > > > Jon > > > > > > _______________________________________________ > > Emc-developers mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > Cheers, Gene Heskett 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) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
