On Sep 26, 2014, at 5:44 AM, andy pugh <bodge...@gmail.com> wrote: Andy,
Thanks, I will try my circuit because I already have had the PCB made and I have assembled it, however, yours is much simpler. I think I will try yours in the future. Do you use a relay to reverse the spindle motor? With the appropriate hal connections (and possibly support circuitry) one could use the dir line to control a DPDT relay. Alan > From: andy pugh <bodge...@gmail.com> > Subject: Re: [Emc-users] 7i43 to control spindle speed > Date: September 26, 2014 at 5:09:03 AM PDT > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Reply-To: "Enhanced Machine Controller \(EMC\)" > <emc-users@lists.sourceforge.net> > > > On 22 September 2014 00:22, Condit Alan <condita...@yahoo.com> wrote: > >> I have seen recommendations about using a stepgen instead of a PWMgen. Which >> would be the better choice? Why? > > The 7i43 on my 9x20 uses a PWMgen. (I think it might be in PDM mode in > actuality). A stepgen is only appropriate if using > frequency-to-voltage. > > A suggested output circuit is: > https://picasaweb.google.com/108164504656404380542/CNCUnsorted#6013253785596056210 > though I see you already have one. > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > > > > > From: Gene Heskett <ghesk...@wdtv.com> > Subject: [Emc-users] Another new bash update, the previous fix for > "shockwave" was incomplete > Date: September 26, 2014 at 5:29:31 AM PDT > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Reply-To: "Enhanced Machine Controller \(EMC\)" > <emc-users@lists.sourceforge.net> > > > See subject, for a change this hits ALL the non-windows systems. > > So update your bash everywhere and reboot them ASAP. > > 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> > US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS > > > > > > From: andy pugh <bodge...@gmail.com> > Subject: Re: [Emc-users] Another new bash update, the previous fix for > "shockwave" was incomplete > Date: September 26, 2014 at 5:35:16 AM PDT > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Reply-To: "Enhanced Machine Controller \(EMC\)" > <emc-users@lists.sourceforge.net> > > > On 26 September 2014 13:29, Gene Heskett <ghesk...@wdtv.com> wrote: >> See subject, for a change this hits ALL the non-windows systems. > > "Shellshock" seems like a better search term. > > -- > atp > If you can't fix it, you don't own it. > http://www.ifixit.com/Manifesto > > > > > > From: Gene Heskett <ghesk...@wdtv.com> > Subject: Re: [Emc-users] 7i76 and spindle control > Date: September 26, 2014 at 5:42:54 AM PDT > To: emc-users@lists.sourceforge.net > Reply-To: "Enhanced Machine Controller \(EMC\)" > <emc-users@lists.sourceforge.net> > > > On Friday 26 September 2014 05:58:37 andy pugh did opine > And Gene did reply: >> On 26 September 2014 04:28, Peter C. Wallace <p...@mesanet.com> wrote: >>> The 7I76 spindle analog out circuitry expects a regulated 5V to 12V >>> supply, your supply has about 10K Ohms of series resistance so is >>> not a suitable voltage source. You can use an isolated external >>> supply of 5 to 12V >> >> It might be important to stress "isolated" there. The KBIC controller >> float the pot at +100 volts or so. > > I'll add even more emphasis to this warning. We tend to forget that which > Just Works(TM) > >> One solution is probably a small 12V - 12V isolated DC-DC converter >> connected to the normal 12V DC. > > That is another avenue, and a actually a good suggestion as those are > generally less costly than a line transformer powered solution and > considerably smaller physically. > > Since this circuit generally needs less than 20 milliamps, if no 12 volts > is available but 5 volts is, there are 5 to 12 converters available too. > But they MUST BE TRANSFORMER ISOLATED, the charge pump designs have way > too much leakage coupling due to the use of capacitance for the power > transfer method. Leakage that can destroy circuitry if accidentally > grounded, and kill you if you are the grounding medium. :( > > Good advice Andy, thanks. > > 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> > US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS > > > > > > From: Mark Wendt <wendt.m...@gmail.com> > Subject: Re: [Emc-users] Another new bash update, the previous fix for > "shockwave" was incomplete > Date: September 26, 2014 at 5:43:58 AM PDT > To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net> > Reply-To: "Enhanced Machine Controller \(EMC\)" > <emc-users@lists.sourceforge.net> > > > On Fri, Sep 26, 2014 at 8:29 AM, Gene Heskett <ghesk...@wdtv.com> wrote: > >> See subject, for a change this hits ALL the non-windows systems. >> >> So update your bash everywhere and reboot them ASAP. >> >> Cheers, Gene Heskett >> > > > Yup. But no need to reboot the machine for the bash update. All you need > to do is type 'exec bash' on any command line terminals you have open or > log out and log back in. > > Mark > > > > ------------------------------------------------------------------------------ > Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer > Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports > Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper > Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer > http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk_______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
