On Friday 15 May 2020 09:05:22 andy pugh wrote: > On Fri, 15 May 2020 at 13:56, Gene Heskett <ghesk...@shentel.net> wrote: > > If the pix posted yesterday is the external relay in question here, > > its a 10 amp rated contacts relay, and coil current to activate that > > is going to be well beyond the bobs ability to deliver the needed > > currant. > > I think that there are extra components on the relay board to account > for that.
There may be, but w/o its schematic we are both guessing. > > why not use > > pin 14 of bob-0 which WILL have the boosted current > > Maybe he is using that for spindle on-off? in which case the OP, Dan, still has another identical relay on the 2nd bob. He probably needs to use one for on/braking and the other for reverse. This isn't quite conventional, but its a far cry from magic. I've been there and done that with only one bob and didn't use that bobs relay. But even a 2 stage braking relay setup was unable to match what I've now done with no relays and one of Jons modified pwm-servo drivers. hal is NOT hard coded, so use its programmability as needed. Dan still has not disclosed (to get my attention at least) what he will be using as a controller, and I am trying to offer enough help such that the smoke stays in the parts and the mirror is still in one piece. So I'm trying to cover all the bases because I have also BTDT. Success is relative of course, which is why I changed it, nominally alongside making that lathes tapered gibs, what, 3 years ago. Both upgrades were very worthwhile improvements. 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-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
